2 outline of tokyo waterworks 2 東京都水道局の概要...tama river mixed river system of the...

7

2 東京都水道局の概要

① 給水区域等　水道局は、23 区と多摩地区の 26 市町に給水しているほか、給水区域に含まれていない未統合３市に対して暫定分水を行っている。

Outline of Tokyo Waterworks　　東京都水道局の概要

2 Outline of Tokyo Waterworks

① Service AreaThe Bureau of Waterworks supplies water to the 23 wards and 26 cities and towns in the Tama area. In addition, the bureau tentatively diverts water to three unincorporated cities in the Tama area that are not included in the service area.

（注）給水区域面積、給水人口、普及率及び給水件数については、平成29年10月１日を基準日とした。

(Note) Service area, population served, pervasion and number of service connections are numbers as 　　　 of October 1st, 2017.

Service area給水区域面積 1,239.27km2

Population served給水人口 13,401,324人（people）

Pervasion普及率 100.0％

Number of service connections給水件数 7,551,025件（cases）

Total length of distribution pipes配水管延長 27,126km

Total capacity of facilities施設能力 6,859,500m3/日（m3/day）

Total distribution amount per year年間総配水量 1,541,705×103m3

Maximum distribution amount per day一日最大配水量 4,570,300m3/日（m3/day）

Table: Basic Data on Water Supply (As of March 2018)

表　給水区域面積等（平成30年３月現在）

水道局_英語版事業概要書.indd 7 H30/08/06 17:04

8


Outline of Water Resources and Service Areas by River Systems 水道水源と水系別給水区域概要図 Outline of Water Resources and Service Areas by River Systems

Purification plant

Water conveyance channel (completed)

Water conveyance channel(under construction)

Intake Weir

Agricultural water rationalization program

Dam (completed)

Dam (under construction)

Note:　Each Service area changes due to the effect of the water shortage or the other reasons.注　それぞれの給水する区域は、渇水等の影響により変動します。

Tone River

Tama River

Mixed river system of the Tone and Tama Rivers

Mixed river system of the Tone,Tama,Sagami Rivers利根川・多摩川・相模川の混合系

S51～H35

Kusaki Dam

Sagami River

Tama River

Edogawa RiverLock Gate

Sekiyado Lock Gate

Edogawa River

Nakagawa River

Tone Chuo

Hitachi River Floodgate

Naka River

Gyotoku Movable Weir

Kanamachi

Misato

Lake KasumigauraKasumigaura kaihatsu

Kita-chiba Water Conveyance Channel

Musashi Channel

Tone Large Weir

Asaka Channel

AsakaNakagawa River/Edogawa River Connection Water Conveyance Channel

Tone River Estuary Weir

Tamagawa (halted)Chofu Intake Weir

Akigase Intake Weir

Watarase Reservoir

Watarase River

Yamaguchi Reservoir

Murayama Reservoir

Arakawa Reservoir

Nagasawa

SuginamiSakai

Misono

Kinuta Kinutashimo

7714.14 million m13.22 million m

Crest heightEffective storage capacityWater utilization capacity

140m50.50 million m3

50.50 million m3

Effective storage capacityWater utilization capacity

26.4 million m3

26.4 million m3


617.0 million m 3

278.0 million m 3


10.6 million m3

10.2 million m3

34.35 million m334.35 million m3

Construction period From 1976 to 2023

Saitama Goguchi Stage Ⅱ

Kasumigaura Water Conveyance

Hino city

Tama city Inagi city

Chofu cityFuchu city

Nishi-tokyo city

Mitaka city

Nerima ward

Nakano ward

Toshima ward

Suginami ward

Shinjuku ward

Bunkyo ward

Chiyoda ward

Adachi ward

Edogawa ward

Koto ward

Taito ward

Arakawa ward

Sumida ward

Shibuya ward

Minato ward

Meguroward

Setagaya ward

Itabashi ward

Shinagawa ward

Ota ward

Kita ward

Tachikawacity

Kodaira city

Machida city

Akishima city

Musashi-murayama city

Higashi-murayama

Kunitachi city

Kokubunji city

Higashi-kurume city

Kiyose city

Katsushika ward

Koganeicity

Higashi-yamato city

Higashi-murayama city

Musashino city

Komaecity

Chuo ward

せき

せき

ぜき

ぜき

ぜき

ぜき

Water conservation forests

22,667ha

Yagisawa Dam

Aimata Dam

Yanba Dam

Shimokubo Dam

Takizawa Dam

Ogouchi Dam

Sonohara Dam

Fujiwara Dam

Naramata Dam

Urayama Dam

Sagami Dam

Siroyama Dam

Arakawa River

Sagami River

Tama River

Musashi Channel

Asaka Channel

Ozaku Intake Weir

Hamura Intake WeirOzaku

Yamaguchi Reservoir

Tone River

Akaya River

Agatsuma River Katashina River

Kannagawa River

Nakatsugawa River


67 m20.0 million m 3

20.0 million m 3


131m175.8 million m 3

115.5 million m 3

Effective storage capacityWater utilization capacityConstruction period

90.0 million m 3

90.0 million m 3

From 1967 to 2019



120.0 million m 3

Futase Dam



20.0 million m 3



185.4 million m 3



56.0 million m 3



13.22 million m 3



85.00 million m 3



31.01 million m 3


34.35 million m 3

34.35 million m 3


58.0 million m3

58.0 million m3

Okutama town

Hinode town

Akiruno city

Hachioji cityHino city

Fuchu city

Tachikawacity

Kodaira city

Akishima city

Hinohara village

Oume city

Mizuho town

Hamura city

Fussa city


Higashi-murayama

Crest height 132 m

せき

せき


9


水道水源と水系別給水区域概要図水道水源と水系別給水区域概要図 Outline of Water Resources and Service Areas by River Systems

Purification plant

Water conveyance channel (completed)

Water conveyance channel(under construction)

Intake Weir

Agricultural water rationalization program

Dam (completed)

Dam (under construction)

Note:　Each Service area changes due to the effect of the water shortage or the other reasons.注　それぞれの給水する区域は、渇水等の影響により変動します。

Tone River

Tama River

Mixed river system of the Tone and Tama Rivers

Mixed river system of the Tone,Tama,Sagami Rivers利根川・多摩川・相模川の混合系

S51～H35

Kusaki Dam

Sagami River

Tama River

Edogawa RiverLock Gate

Sekiyado Lock Gate

Edogawa River

Nakagawa River

Tone Chuo

Hitachi River Floodgate

Naka River

Gyotoku Movable Weir

Kanamachi

Misato

Lake KasumigauraKasumigaura kaihatsu

Kita-chiba Water Conveyance Channel

Musashi Channel

Tone Large Weir

Asaka Channel

AsakaNakagawa River/Edogawa River Connection Water Conveyance Channel

Tone River Estuary Weir

Tamagawa (halted)Chofu Intake Weir

Akigase Intake Weir

Watarase Reservoir

Watarase River

Yamaguchi Reservoir

Murayama Reservoir

Arakawa Reservoir

Nagasawa

SuginamiSakai

Misono

Kinuta Kinutashimo

7714.14 million m13.22 million m


140m50.50 million m3

50.50 million m3


26.4 million m3

26.4 million m3


617.0 million m 3

278.0 million m 3


10.6 million m3

10.2 million m3

34.35 million m334.35 million m3

Construction period From 1976 to 2023

Saitama Goguchi Stage Ⅱ

Kasumigaura Water Conveyance

Hino city

Tama city Inagi city

Chofu cityFuchu city

Nishi-tokyo city

Mitaka city

Nerima ward

Nakano ward

Toshima ward

Suginami ward

Shinjuku ward

Bunkyo ward

Chiyoda ward

Adachi ward

Edogawa ward

Koto ward

Taito ward

Arakawa ward

Sumida ward

Shibuya ward

Minato ward

Meguroward

Setagaya ward

Itabashi ward

Shinagawa ward

Ota ward

Kita ward

Tachikawacity

Kodaira city

Machida city

Akishima city


Higashi-murayama

Kunitachi city

Kokubunji city

Higashi-kurume city

Kiyose city

Katsushika ward

Koganeicity

Higashi-yamato city

Higashi-murayama city

Musashino city

Komaecity

Chuo ward

せき

せき

ぜき

ぜき

ぜき

ぜき

Water conservation forests

22,667ha

Yagisawa Dam

Aimata Dam

Yanba Dam

Shimokubo Dam

Takizawa Dam

Ogouchi Dam

Sonohara Dam

Fujiwara Dam

Naramata Dam

Urayama Dam

Sagami Dam

Siroyama Dam

Arakawa River

Sagami River

Tama River

Musashi Channel

Asaka Channel

Ozaku Intake Weir

Hamura Intake WeirOzaku

Yamaguchi Reservoir

Tone River

Akaya River

Agatsuma River Katashina River

Kannagawa River

Nakatsugawa River



20.0 million m 3



115.5 million m 3

Effective storage capacityWater utilization capacityConstruction period

90.0 million m 3

90.0 million m 3

From 1967 to 2019



120.0 million m 3

Futase Dam



20.0 million m 3



185.4 million m 3



56.0 million m 3



13.22 million m 3



85.00 million m 3



31.01 million m 3


34.35 million m 3

34.35 million m 3


58.0 million m3

58.0 million m3

Okutama town

Hinode town

Akiruno city

Hachioji cityHino city

Fuchu city

Tachikawacity

Kodaira city

Akishima city

Hinohara village

Oume city

Mizuho town

Hamura city

Fussa city


Higashi-murayama

Crest height 132 m

せき

せき


10

② 水道需要　水道需要は、人口動態やライフスタイル、気象条件や社会経済状況など、様々な要因により変動する。

　これまでは、経済成長や人口増加など、明らかに水道需要の増加が見込まれる時代もあったが、社会経済動向の不透明な状況、気候変動の進行、自然災害など、これまでに経験のない事象が水道需要に影響を及ぼすおそれがあり、今後の水道需要がどのように変化していくか、これまで以上に不確実性が増している。

　しかし、水道需要は、施設整備の規模を定める重要な要素の一つであり、水道施設が 50 年から 100 年にわたって使い続けるものであることを踏まえると、常に安定給水を確保できるよう、できるだけ長期にわたる水道需要を見据えることが求められる。

　都では、一日平均使用水量は、現在と同程度の量で推移し平成 30 年代にピークを迎えること、さらに、これに少なくともこれまでに経験した実績を確実に踏まえ、配水量の変動や漏水等を考慮した一日最大配水量は、ピーク時におおむね 600 万㎥となる可能性がある、と見通した。


② Water Demand in TokyoWater demand fluctuates according to population movement, life-style, weather condition and social economic condition.Up till now, we had seen the period where the increase in water demand was obviously dictated by economic growth and population rise, however, amid uncertain social economic trend, weather changes, natural disasters and so on, there is a risk that it may affect water demand that has never been experienced in the past. And in future, how will water demand change remain less certain. Nonetheless, water demand is one of the important factors that determine the scale of facility to be provided, and if we take into consideration that water facility will continue to be used for the next 50 or even 100 years, in order to secure stable water supply, it is required to estimate long-term water demand. In Tokyo, it is estimated to be the same as current daily average water use, and it will peak in 10 years from 2018 to 2027. Further, taking into account at least the result that had been experienced so far and the fluctuation including leakage in water delivery, the maximum water delivery per day at its peak is estimated to be about 6 million m3.

8910111213141516171819202122232425262728

Heisei平成

FY年度

Daily Average Water Use一日平均使用水量

×1,000m3/day（千m3/日）

Domestic water生活用水

Population served（Note ２）給水人口（注２）

×1,000people（千人）

199619971998199920002001200220032004200520062007200820092010201120122013201420152016

4,270 4,279 4,268 4,266 4,276 4,253 4,243 4,210 4,269 4,259 4,264 4,269 4,226 4,198 4,227 4,112 4,126 4,122 4,078 4,092 4,111

2,910 2,929 2,946 2,958 2,979 2,984 2,996 2,987 3,027 3,030 3,044 3,052 3,040 3,020 3,036 2,973 2,973 2,965 2,940 2,949 2,964

11,743 11,792 11,859 11,930 12,025 12,139 12,255 12,351 12,441 12,538 12,662 12,797 12,928 13,040 13,128 13,161 13,195 13,272 13,369 13,486 13,608

（注1）　平成22年4月の奥多摩町の統合に伴い、平成22年度から区部及び29市町となっている　　　　（平成21年度以前は区部及び28市町である）。（注2）　給水人口は、年度における10月1日現在の値である。　　　　なお、平成28年度の給水人口は、国勢調査の結果により補正されることがある。

Note 1: After the integration of Okutama City into Tokyo in April of 2010, the Tokyo Metropolitan Area is composed of 23 Wards and 29 Cities/Towns. That means that before 2009, it consists of 23 Wards and 28 Cities /Towns.Note 2: The figures of population served shown in the Table represent the data in October 1 of each fiscal year. The population served in FY2016 may be amended upon the census.　　　　

Table: Daily Average Water Use and Population Served (Wards and 29 Cities/ Towns(note 1))

表　一日平均使用水量及び給水人口（区部及び29市町（注1））


11

③ 組織図及び職員構成　水道局の組織構成及び職員構成は、次のとおりである。


③ Organizational Chart and Personnel CompositionThe organizational structure and personnel composition of the Bureau of Waterworks are as shown below.

Figure: Organizational Chart of Tokyo Waterworks Bureau (As of April 2018)

図　東京都水道局組織図（平成30年４月１日現在）

DirectorGeneral局　長

Reservoir Management Offices貯水池管理事務所

Deputy Director Generalfor IWA World Water Congness2018 Tokyo Preparation理事（IWA世界会議準備担当）

Deputy Director Generalfor Technical Affairs技　監

Service Stations

Water IntakeManagement Office

営業所

取水管理事務所

Water Supply Office給水事務所

Purification Plants浄水場

General Affairs Division総務部

Personnel Division職員部

Purification Division浄水部

Water Supply Division給水部

Construction Division建設部

Coordination Division調整部

Facilities Division施設部

Branch Offices支　所

Construction Offices建設事務所

Assets Management andContracting Division経理部

Customer Service Divisionサービス推進部

Water Supply Management Offices給水管理事務所

Training & Technical Development Center研修・開発センター

Water Supply Operation Center水運用センター

Water Quality Management Center水質センター

Water Resources Administration Office水源管理事務所

Purification Management Offices浄水管理事務所

Tama WaterworksReform PromotionCenter多摩水道改革推進本部

Table: Table of Personnel Composition (As of April 2018)

表　職員構成表（平成30年４月1日現在）

事項

職種別人数（人）1,440 1,070 12 375 406 50 153 285 3,791

内管理職員（人）74 87

事務技能合計

技術系

土木

Civilengineering

ClericalstaffItem

Personnel number of management level

Personnel numberby job type

ArchitectureMechanicalengineering

Electricengineering

Engineering staff

ForestryEnvironmentalinspection

Technician Total

建築機械電気林業環境検査


12

④ 財政制度と今後の財政運営　東京都の水道事業は、地方公営企業として運営されており、公共性の確保と経済性の発揮を求められている。会計制度については、公営企業会計方式を採用している。

　また、独立採算で運営しており、事業運営に必要な経費は水道料金収入により賄っている。一方、建設事業は、企業債のほか、国庫補助金、一般会計繰入金などを財源としている。

　予算の議決、決算の認定、水道料金改定（条例改正）の議決などは、都議会の権限である。


④ Financial System and Future Financial ManagementThe Tokyo Waterworks are operated as a local public enterprise, which is required to ensure its public nature and maintain economic efficiency. The waterworks uses the public enterprises accounting system as its financial system.Additionally, the waterworks business is conducted on a self-supporting accounting system, and the expenses required are covered by the revenue from water charges. On another front, the construction projects are financed by enterprise loans as well as governmental subsidies and money transferred from general account.The Tokyo Metropolitan Assembly has the authority to make decisions on the budget, approve account settlement, and make revisions to water charges (amendment of the ordinances).

Figure: Account Settlement for FY 2017

図　平成29年度決算

固定資産土地、建物など24,328

資本金固有資本金組入資本金など17,787

剰余金国庫補助金、未処分利益剰余金など

3,326

流動資産現金、有価証券など

2,510

繰延勘定企業債発行差金

1

SurplusNational subsidies,

unappropriated earned surplus, etc.332.6

Current assetsCash, securities, etc.

251.0

Deferred accountsBond issue discount

and expenses0.1

National subsidies andinvestments from

general account 4.1

Fixed assetsLands,

buildings, etc.2,432.8

施設の建設・改良の費用888

企業債 404

水道料金収入

その他491

2,887

730

純利益297

施設の維持管理、給水、料金収納などの費用2,303

支払利息など 48

減価償却費など

国庫補助金及び一般会計出資金 41

その他 20

前年度からの繰越工事資金 34

翌年度への繰越工事資金215

Interest paid etc.4.8

Depreciation expenses, etc.

73.0

Other 2.0

Bonds

40.4

収支不足△848

〈Balance Sheet〉〈貸借対照表〉

〈Profit and loss account〉〈収益的収支〉〈Capital income and expenditures〉〈資本的収支〉

Assets : 2,683.8 Billion yen資産 : 26,838億円

Income : 337.8 Billion yen収入 : 3,378億円

Expenditure : 308.1 Billion yen支出 : 3,081億円

Income : 49.9 Billion yen収入 : 499億円

Expenditure : 134.7 Billion yen支出 : 1,347億円

Liabilities : 572.6 Billion yen負債 : 5,726億円固定負債

退職給与引当金、修繕引当金など2,647

流動負債未払金、前受金など

1,413

Fixed liabilitiesAllowance for employees

retirement benefits, allowance for repairs, etc.

264.7

Current liabilitiesAccounts payable,

advance received, etc. 141.3

繰延収益長期前受金など1,666

166.6Capital

Owned capital, set input capital,etc.

1,778.7

Revenue from water charges

288.7

Other49.1

Costs forfacilities

maintenance, water supply, collection of charges, etc.

230.3

Net profit29.7

Shortage of balance△84.8

Construction funds carried forward 21.5

Cost for facilities construction/improvement

88.8

企業債の償還金244

Redemption ofbonds 24.4

Construction funds brought forward 3.4

資本：21,112億円Capital：2,111.2 Billion yen

Deferred revenueLong-term advance received,etc.


13

　昭和 30 年代から昭和 50 年代の高度経済成長期及びそれに続く数箇年は、水道需要の急増に対応した施設拡張による固定費の増加や物価の急騰などから、おおむね３年ごとに料金改定を行ってきた。その後、昭和 60 年代からは、経済情勢の安定や内部努力の推進などを背景に、財政状況はほぼ順調に推移してきた。

　しかし、施設整備コストの上昇、水源水質の悪化による浄水処理経費の増加などにより、平成５年度末には単年度収支のみならず、累積収支でも不足額が発生した。

　このため、平成６年に、平成９年度までの４か年を計画期間とする財政計画を策定し、内部努力を行ってもなお不足する額については料金改定を行うなどして財政基盤の確立を図ってきた。その後も健全な財政運営に努め、内部努力を行うことにより、平成 17 年１月には料金水準の引下げを実施した。

　昨今では、安全でおいしい水へのお客さまニーズが高まっていること、高度経済成長期に整備した施設の老朽化が進んでいることに加え、東日本大震災を契機として、想定される大規模地震への対応などの課題も生じている。こうしたなか、これらの課題へ的確に対応するため、平成28 年 2 月には、平成 32 年度までの５か年を計画期間とする「東京水道経営プラン 2016」を策定した。この計画では、経費縮減と収入確保に取り組むことで、現行の料金水準を維持しながら、計画の最終年度となる平成 32 年度末には累積資金収支を均衡させることとしている。


During the high economic growth period and several years after the period from the 1960s to the first half of the 1980s, we raised the water charges almost every three years due to an increase in fixed expenses for facility expansion in response to a sharp increase in water demand and a sudden rise in commodity prices. Since the second half of the 1980s, our financial condition has been favorable due to stabilization of economic conditions and promotion of internal efforts.However, at the end of FY 1993, the one-year balance as well as the accumulated balance was in the red due to an increase in facilities improvement costs and the increase in water treatment costs from deterioration in the quality of water resources.For this reason, we tried to establish a firm financial base by preparing a four-year financial plan with the planned period from FY 1994 to 1997 in 1994 and by raising water charges to compensate for deficits after our best efforts at reducing costs. We reduced the charge level in January 2005 by executing sound financial management and making our best efforts after the plan.In addition to the increased needs of customers for potable better tasting water and issues related to the deterioration of facilities developed in the age of higher economic growth, recently arising issues include countermeasures to possible large scale earthquake disaster. To handle these problems we developed “Tokyo Waterworks Management Plan 2016” in February 2016.The period of this plan is FY2016-FY2020. In this plan, we will balance accumulated income and expenditures by the end of FY 2020 while maintaining the current charge level by reducing expenses and the securement of revenues.

Figure: Transition of Water Supply Cost and Unit Selling Price

図　給水原価と販売単価の推移

240.00

220.00

200.00

180.00

160.00

140.00FY年度

FY年度

（円／ｍ3 ）

Water supply cost給水原価Unit selling price販売単価

198.83

206.80

205.89

205.30

201022

201123

203.34

205.83

201224

203.51

206.02

201325

207.80

210.48

201426

209.19 208.95

211.61 211.61

201527

201628

203.38

211.59

2017２9

207.16

206.50

201830（予算）

unit : yen/m3（単位：円）

yen/m3 平成17年1月料金改定

Revision of water charges in January 2005

1998 1999 2000 2001 2002 2003 2004 2005 2006 200910 11 12 13 14 15 16 17 18 21

200719

200820

218.67

218.72

216.62

218.52

218.61

217.97

217.80

217.24

217.00

216.09

215.10

214.95

216.24

214.97

211.54

210.23

199810

199911

200012

200113

200214

200315

200416

200517

209.74

209.53

205.81

209.46

200618

200719

204.72

208.51

200820

202.72

206.85

200921

201224

201325

201426

201527 28

2016 201729

201830(予算)

201022

201123

給水原価Water supply cost

Unit selling price販売単価


14

⑤ 東京水道経営プラン 2016　「東京水道経営プラン 2016」は、都民への説明責任を果たしていくため、東京都水道事業経営問題研究会における幅広い観点からの意見や長期的な「経営戦略」などを踏まえ、平成 28 年度から 32 年度までの５年間に取り組んでいく施策の事業計画と財政計画を明らかにした、東京都水道局の「水道事業ビジョン」として策定したものである。

（１）計画期間　平成 28 年度から平成 32 年度までの 5 年間

（２）経営方針　東京水道は、都民生活と首都東京の都市活動を支える基幹的ライフラインとして、安全でおいしい高品質な水を安定的に提供していく。

また、危機管理に万全を期すとともに、盤石な体制の構築や効率的で健全な経営に努め、信頼される事業運営を実践していく。

さらに、将来を見据えた取組を発信し、世界一の水道システムを一層進化させ、国内外に発信するとともに、次世代に繋げていく。

（３）主な取組　ア基幹ライフラインの運営　　（ア）安定（24 時間常時供給）　　

　　（イ）高品質（安全でおいしい水の供給）　　（ウ）様々な脅威への備え（新たな危機管理）

　イ取組の進化・発信

　　（ア）お客さまとの対話（実感・信頼していただくため対話）

　　（イ）地域・社会への貢献（エネルギー・環境等に配慮した活動）

　　（ウ）国内外水道事業体への貢献（技術力・ノウハウの発信と貢献）

ウ支える基盤　　（ア）人材（財）基盤（確保・育成）

　　（イ）運営体制（グループ経営）　　（ウ）財政基盤（計画的・効率的な財政運営）

（４）財政収支計画　表（1）の通り


⑤ Tokyo Waterworks Management Plan 2016Tokyo Waterworks Management Plan 2016 was formulated to present “Water Business Vision of Tokyo Waterworks” that clarifies operational plans and financial plans of policy measures to be undertaken in the coming 5 years from FY2016 to FY2020. It is prepared based on relevant aspects such as wide-ranged ideas given in Workshop for Management Issues of Tokyo Waterworks Business as well as long term “Management Strategy”, also in consideration of the responsibility for explaining to Tokyo citizens.

(1) Plan Period 5 years from FY2016 to FY2020

(2) Business Management Policy Tokyo Waterworks continues to provide services to supply steadily potable delicious water of high quality that is an essential lifeline to support citizen’s life and urban activities of Capital Tokyo.Tokyo Waterworks also takes all possible measures to ensure risk management, makes efforts to establish a staunch management system as well as to conduct efficient and sound business management and performs reliable business operations.Furthermore, Tokyo Waterworks launches various initiatives of long-sighted approach, further develop its world leading water system and extend the resulted information internationally and domestically and passes them to the next generation.

(3) Major InitiativesA. Operation of the essential lifeline (a) Stability (supply of water continuously in 24

hours) (b) High quality (supply of potable delicious water) (c) Preparedness to various risks (development of

advanced risk management system)B. Development of initiatives and sending the relevant

information (a) Dialogue with customers (exchange of

communications for obtaining of reality and reliability)

(b) Contribution to society and region (activities in due consideration of energy saving, environment protection and other essentials)

(c) Contribution to other water business entities in Japan and abroad (activities in due consideration of energy saving, environment protection and other essentials)

C. Supporting Bases (a) Human resources (recruitment and fostering/

development) (b) Management system (including group management) (c) Financial basis (well-planed and efficient financial

operation)

(4) Fiscal income and expenditure plan As shown in Table (1)


15

（5）経営努力　表（2）の通り　

（6）健全な財政運営　表（3）の通り

（7）施設整備主要事業計画　表（4）の通り

（8）施設整備到達目標　表（5）の通り


(5) Managerial efforts As shown in Table (2)

(6) Management-related indexes As shown in Table (3)

(7) Main project plan for facilities improvement As shown in Table (4)

(8) Target Indicators for Facility Development As shown in Table (5)

Items事項

FY201628 年度

FY201729 年度

FY201830 年度

FY201931 年度

FY202032 年度

Total計Plan

計画Accounting

決算Increase and

decrease増減

Plan計画

Accounting決算

Increase anddecrease増減

Plan計画

Budget予算


Plan計画

Plan計画

Cost saving by means of efficiency drive of managerial activities事務事業の効率化による経費削減

63 27 △ 36 237 192 △ 45 252 252 0 327 522 1,401

Reduction of the regular number of staff既定経費の節減 1,569 1,442 △ 127 1,850 2,672 822 2,201 1,887 △ 314 2,328 2,379 10,327

Income-earning by means of effective use of assets, etc.資産の有効活用等による収入確保

1,312 1,632 320 339 1,616 1,277 467 3,881 3,414 512 642 3,272

Total計 2,944 3,101 157 2,426 4,480 2,054 2,920 6,020 3,100 3,167 3,543 15,000

(Unit: Million yen)( 単位：百万円 )（２）　Managerial efforts　　経営努力

Income/Expenditure

収支

FiscalYear年度

Income収　　入

Expenditure支　　出

Income and expenditure over-and-

under absorbed overhead

収支過不足額

Accumulated income and expenditure

over-and-under absorbed overhead

estimated as of end of FY2015

Plan:241 Results:244

累積収支過不足額27 年度末

計画：241 実績 :244

Charges Bondissues

Nationalsubsidies

Moneytransferred

from general account

Others Total Operatingcost

Interestexpenses

Principal redemption

money

Construction &

improvement costs

Total

料　金起　債国庫補助金一般会計繰入金その他計営業費用支払利息元金償還金建設改良費計

201628

Plan計画 318,985 14,260 1,162 4,891 45,858 385,156 251,366 6,097 20,325 106,699

(1,806) 384,487 669 910

Accounting決算 310,153 12,682 986 4,533 45,163 373,517 246,133 5,380 20,323 100,930

(3,138) 372,766 751 995Increase and

decrease増減

△ 8,832 △ 1,578 △ 176 △ 358 △ 695 △ 11,639 △ 5,233 △ 717 △ 2 △ 5,769(1,332) △ 11,721 82 85

201729

Plan計画 319,409 18,465 455 4,355 44,930 387,614 250,886 5,790 20,504 110,817

( △ 3,562) 387,997 △ 383 527

Accounting決算 311,794 32,696 1,643 5,207 44,488 395,828 248,338 4,835 16,654 118,079

(4,170) 387,906 7,922 8,917Increase and

decrease増減

△ 7,615 14,231 1,188 852 △ 442 8,214 △ 2,548 △ 955 △ 3,850 7,262( △ 1,611) △ 91 8,305 8,390

201830

Plan計画 319,826 25,613 455 4,569 45,420 395,883 249,555 5,696 17,445 123,407 396,103 △ 220 307

Budget予算 319,723 59,634 2,251 5,945 52,563 440,116 281,226 5,345 15,346 △ 4,514 437,825 2,291 2,480


△ 103 34,021 1,796 1,376 7,143 44,233 31,671 △ 351 △ 2,099 135,908( △ 3,313) 41,722 2,511 2,173

201931

Plan計画 321,063 25,395 455 4,748 46,075 397,736 251,824 5,793 16,919 12,501

( △ 1,611) 397,943 △ 207 100

202032

Plan計画 320,772 26,504 72 4,571 46,863 398,782 252,716 5,928 17,899 123,407

( △ 4,667) 398,882 △ 100 0

(Unit: Million yen)( 単位：百万円 )（１）　Fiscal income and expenditure plan　　財政収支計画

(Note 1) Bond issues and principal redemption money do not include those refunded.(Note 2) Construction & improvement costs include amounts in the accumulated fund for the renewal of large purification plants, but do not include amounts from reversals　

of that fund or reversals of the reserve fund for facilities improvement of Okutama waterworks operations.(Note 3) Consumption tax, including local consumption tax, of 8% are included in figures of income and expenditure注１　起債及び元金償還金は、借換分を除いたもの注２　建設改良費は、大規模浄水場更新積立金の積立額を含み、同積立金及び奥多摩水道施設整備積立金の取崩額を除いた額（カッコ内は内書き）注３　消費税率（地方消費税を含む）は 8％

Index項　　目

Calculation Formula算定方法

FY2017 (actual)29 年度（実績）

FY2016 - FY202028 年度～ 32 年度

Ratio of the amount of redemption money for principals and interests against the charge income料金収入に対する元利償還割合（％）

interest payment + principal redemption/charge income支払利息 + 元金償還金 / 料金収入

6.9 level lower than FY201426 年度を下回る水準

Ratio of the amount of corporate bonds outstanding against the charge income料金収入に対する企業債残高割合（％）

closing balance of corporate bonds/chargeincome年度末企業債未償還残高 / 料金収入

76.7 level lower than FY201426 年度を下回る水準

Ordinary balance ratio 経常収支比率（％）

operating revenue + non-operating revenue/operating cost + non-operating cost営業収益 + 営業外収益 / 営業費用 + 営業外費用

111.9 100% or more100％以上

（３）　Management Index　　健全な財政運営

(note 1) In the calculation of ratio of redemption money for principal and interest, refinancing bonds are excluded.(note 2) Real value of FY2014 is calculated including taxes.注１　料金収入に対する元利償還割合は、借換債を除いたもので算定注２ 26 年度実績は税込で算定

The outline of the Tokyo Waterworks Management Plan 2016東京水道経営プラン2016の概要


16


Project name事　　業　　名

Project expense

事業費

Planned amount by FY年度別計画額

FY201628 年度

FY201729 年度

FY201830 年度

FY201931 年度

FY202032 年度

Plan計画

Accounting決算

Increase and decrease増減

Plan計画

Accounting決算


Plan計画

Budget予算


Plan計画

Plan計画

Water resources and purification plantsimprovement project水源及び

浄水施設整備事業193,000 31,000 24,284 △ 6,716 32,000 25,775 △ 6,225 32,000 30,500 △ 1,500 32,000 37,000

Transmission/ distribution facilities improvement project

送配水施設整備事業741,800 109,000 110,035 1,035 108,000 142,229 34,229 108,000 156,900 48,900 108,000 103,000

Water supply facilities improvement plan 給水設備整備事業 63,200 10,000 13,445 3,445 10,000 10,030 30 10,000 11,600 1,600 10,000 10,000

Total計 998,000 150,000 147,764 △ 2,236 150,000 178,034 28,034 150,000 199,000 49,000 150,000 150,000

財　　源

Financial resources

Enterprise bonds企業債 203,892 14,260 12,682 △ 1,578 18,465 32,696 14,231 25,613 59,634 34,021 25,395 26,504

National subsidies国庫補助金 6,646 1,162 1,048 △ 114 455 1,643 1,188 455 2,251 1,796 455 72

Money transferred from general account

一般会計繰入金6,646 1,162 1,049 △ 113 455 1,775 1,320 455 2,251 1,796 455 72

Othersその他 780,816 133,416 132,985 △ 431 130,625 141,920 11,295 123,477 134,864 11,387 123,695 123,352

(Unit: Million yen)( 単位：百万円 )（４）　Main project plan for facilities improvement　　施設整備主要事業計画

Indicators指　　標

Past record実績

Target到達目標 Description of indicators

指標の説明

After10years10 年後

FY201729 年度

FY202032 年度

FY202537 年度

安定

Stability

Water resource availability for steady water supply at droughtexpected to happen once in every 10 years10 年に 1 回程度発生する規模の渇水に対応する水源確保率

（％） 93 100 Ratio of the secured water volume against the targeted water volume 目標とする水源量のうち確保した水源量の割合 —

Rate of the water supply in an accident事故時の安定給水確保率（％） 78 83

Ratio of the water distribution reservoir capacities in water treatment plants/water distribution plants having respective water distributing areas against the volume of water distribution in 12 hours of planed daily maximum water distribution volume 計画一日最大配水量の 12 時間分に対する配水区域を持つ浄水場・給水所の配水池容量の割合

89

Rate of direct water supply from distribution mains直結給水率（％） 74 73

Ratio of the numbers of direct water supply from distribution mains against the total number of water supply給水件数に対する直結給水件数の割合

75

高品質

High

quality

Rate of earthquake-resistant distribution reservoirs配水池耐震施設率（％） 71 89

Ratio of the water distribution reservoir volumes in anti-earthquake reinforced system against the total water distribution reservoir volume配水池容量のうち耐震強化した配水池容量の割合

99

様々な脅威への備え

Preparedness to various types of risks

重要施設への供給ルートの耐震継手率

Rate of earthquake-resistant-joint pipesused in supply routes serving im

portant facilities

Capital’s central agencies/emergency medical institutions, etc. 首都中枢・救急医療機関等

（％） 88 100（31 年度）

Ratio of the total length of earthquake-resistant-joint pipes against the total length of water supply pipes in the relevant supply areas

供給ルートの管路延長のうち耐震継手化した管路延長の割合

—

Bases of large-scale rescue and relief operations, etc. 大規模救出救助活動拠点等

（％） 65 100（31 年度） —

避難所

Evacuationcenters

Secondary schools中学校（％） 63 100

（31 年度） —

Primary schools小学校（％） 58 78 100(FY2022）

100(34 年度）Universities/ high schools/community centers大学・高等学校・公民館等（％） 46 36 100

主要な駅

Major railw

aystations

Number of passengers a day(more than 200,000)一日当たりの乗車人数（20 万人超）（％） 51 100

（31 年度） —

Number of passengers a day(more than 100,000 and less than 200,000)一日当たりの乗車人数（10 万人超 20 万人以下）

（％） 59 78 75(FY2022）100(34 年度）

Venues for 2020 Tokyo Olympic/Paralympic Games and other events東京 2020 オリンピック・パラリンピック競技大会会場等（％） 82 100

（31 年度） —

Rate of earthquake-resistant service pipes supplying evacuation centers and major stations避難所・主要な駅の給水管耐震化率（％） 83 100

（31 年度）

Ratio of the total length of earthquake-resistant water distribution pipes against the total length of water distribution pipes to and in the relevant facilities such as evacuation centers and major railway stations 対象となる避難所・主要な駅の給水管のうち耐震化した給水管の割合

—

Rate of earthquake-resistant service pipes installed in private roads私道内給水管耐震化率（％） 44 59

Ratio of the total length of earthquake-resistant water distribution pipes against the total length of water distribution pipes to be installed in water distribution projects in private road areas 私道内給水管整備事業の対象延長に対する耐震化延長の割合

85

Rate of water supply available during massive power outage大規模停電時における給水確保率（％） 69 97

Ratio of the volume of secured water supply against the estimated volume of water supply at times of massive power outage大規模停電時における給水見込量に対する給水確保量の割合

100(FY2021）100(33 年度）

Rate of accomplishment of counter measures for anticipated inundation想定される浸水への対策達成率（％） 100 100

（28 年度）

Ratio of the number of completed facilities to cope with inundation against the number of planned facilities as required as inundation-resistant measures 浸水対策が必要な施設のうち浸水対策が完了した施設の割合

—

（５）　Target Indicators for Facility Development　　施設整備到達指標

(note 1) Figures in the column ""After 10 years"" are targets set in Master Plan for Construction of Tokyo Waterworks Facilities. (note 2) Years in brackets shown in the column ""Target;FY2020"" or the column ""after 10 years; FY2025"" are years of completion of development projects.注１　10 年後は、東京水道施設整備マスタープランで掲げている目標注２　到達目標（平成 32 年度）及び 10 年後（37 年度）欄のカッコ内は、整備が完了する年度


17

⑥ 東京水道長期構想―STEP Ⅱ―　水道局では、「東京水道新世紀構想―STEP 21―」に続く、新たな施設整備長期構想として、平成 18 年 11 月、

「東京水道長期構想 STEP Ⅱ～世界に誇る安心水道～」を策定した。この構想は、東京水道が将来にわたって、都民生活と首都東京を支える水道であり続けることを基本的な目標とし、これからおおむね四半世紀の間に行っていく施策の方向を示した基本構想であり、今後の水道施設整備の指針となるものである。

　本構想では、首都東京の現状を踏まえ、東京水道のあるべき姿として「都民生活を支える水道」と「首都東京の機能を支える水道」の二つを基本視点と位置付け、今後、東京水道が進むべき六つの方向性と施策の展開を示している。


⑥ �Tokyo�Waterworks�Principal�Vision―�STEP�II―In November 2006, the Bureau of Waterworks developed the “Tokyo Waterworks Principal Vision STEP II – Safe Waterworks, our pride to the world” as a new facilities improvement principal vision following the “Tokyo Waterworks New Century Vision – STEP 21.” This vision basically aims to make sure the Tokyo Waterworks supports citizen’s life and the capital Tokyo in the future and is the basic vision that shows the directions of the measures for the next quarter century. It is also the guideline for improvements in waterworks facilities in the future.With this vision, based on the current condition of the capital Tokyo, two basic viewpoints: “waterworks supporting citizen’s life” and “waterworks supporting the functions of the capital Tokyo” are set as the basic policies of the Tokyo Waterworks, and the six goals and measures to be advanced and carried out by the Tokyo Waterworks in the future are shown.

1 Waterworks to support an affluent life2 High level waterworks to supply water stably3 Sustainment of waterworks for next generation4 Waterworks with global environmental consideration5 User-friendly waterworks6 Leader in the waterworks field

1 Waterworks to support an affluent life2 High level waterworks to supply water stably3 Sustainment of waterworks for next generation4 Waterworks with global environmental consideration5 User-friendly waterworks6 Leader in the waterworks field

１　豊かな暮らしを支える水道２　断水のない高水準な水道３　次世代につなげる水道４　地球環境に配慮した水道５　分かりやすく親しみやすい水道６　水道界をリードする水道

１　豊かな暮らしを支える水道２　断水のない高水準な水道３　次世代につなげる水道４　地球環境に配慮した水道５　分かりやすく親しみやすい水道６　水道界をリードする水道

Goals for Tokyo Waterworks東京水道の進むべき方向


18

⑦ 東京水道施設再構築基本構想　水道局では、昭和 30 年代から 40 年代までの高度経済成長期に集中的に整備した膨大な水道施設が間もなく一斉に更新時期を迎え、こうした施設を再構築していく必要があることから、「東京水道施設再構築基本構想」を平成 24年３月に策定した。

　本構想は、「東京水道長期構想―STEP Ⅱ―」に掲げたものも含め、今後取り組むべき水道施設整備のうち、再構築に関わるハード面の整備について、50 年、100 年という長期的な観点からその方針を定めたものであり、再構築を通じて、水道施設に新たな「安全度」を備えることを目指すこととしている。

　新たな「安全度」とは、気候変動や首都直下地震など、想定される将来のリスクに対し、個別の施設の対策を可能な限り強化するとともに、それらを緊密に連携させることによって、たとえ複数のリスクが同時に発生するなど、これまで経験したことのない危機に直面しても、水道システム全体で確実に対応できることである。

　本構想では、これからの 100 年も安全・安心な水道水を安定的に供給し続け、時代に応じた社会的要請にも的確に対応していくことを目指し、３つの方向性に基づき、７つの目標を掲げ、目標の達成に向けて、具体的な施策を展開していく。


⑦ Basic Concept for Renewal of Tokyo Waterworks FacilitiesAs an enormous number of waterworks facilities, which were developed intensively during the time of higher economic growth between mid-1950s and early 1970s, are all about to face the time of renewal and need to be re-constructed, the Bureau of Waterworks formulated the “Basic Concept for Renewal of Tokyo Waterworks Facilities” in March 2012.Among the waterworks facility development projects that should be implemented in the future including the ones set forth in the “Tokyo Waterworks Principal Vision STEP II,” this vision sets a policy, from the long-term perspective of over 50, 100 years, of the hard infrastructure development associated with the reconstruction, and aims to provide waterworks facilities with a new “level of safety”.The new “level of safety” enhances countermeasures for potential risks in the future at individual facilities as much as possible (e.g. Tokyo epicentered major earthquake and climate change), and lets them cooperate closely with each other so that the whole water supply system could deal with crises never experienced before such as coincidence of multiple risks.Aiming to continue to stably supply safe and secure tap water in the coming 100 years and to respond appropriately to societal demands in accordance with the changes in the times, this vision sets 7 targets based on 3 directions and carries out the specific policy measures to achieve those targets.

水道施設の再構築Renewal of waterworks facilities

方向性Directions

３つの方向性について、

「安全度確保」の考え方を整理

Organize the idea of“ensuring the level of safety”

for 3 directions:

安心できる安定給水の実現

Realization ofsafe and stable water supply

徹底した質へのこだわりThorough commitment to quality

低エネルギー化の追求Pursuit of energy reduction

7つの目標7 targets

３つの方向性と安全度確保の考え方に基づき、７つの目標を設定

Set 7 targets based onthe 3 directions and the idea of ensuring the level of safety:

首都東京を守る水源の確保Securing water resources to protect people’s lives in the capital Tokyo

将来にわたるバックアップ機能の確保Securing backup functions over the future

浄水場の効率的な再配置Efficient relocation of water purification plants

安定給水を支える供給能力の確保Ensuring supply capacity to support stable water supply

持続可能な浄水システムの構築Establishment of sustainable water purification system

工ネルギーの最小化Minimization of energy

防災機能の更なる高度化Further enhancement of disaster prevention function


19

⑧ 東京水道施設整備マスタープラン　水道局では、「東京水道長期構想―STEP Ⅱ―」や「東京水道施設再構築基本構想」など、東京水道のあるべき姿を示してきた。

　「東京水道施設整備マスタープラン」は、これら構想で示した考え方等を具体化するため、改めて東京水道の現状を整理した上で、中長期的な施設整備の方向性を明らかにし、10 年後の整備目標とその目標を達成するための具体的な取組を定め、今後の事業計画などに反映していくことを目的に平成 26 年４月に策定（平成 28 年 2 月改定）したものである。

　計画期間は、平成 28 年度から平成 37 年度までの 10年間である。　本マスタープランでは、今後の施設整備に当たり重要な要素となる施設能力、施設更新及び水道需要の考え方を整理した上で、「安定給水の確保」、「震災対策等の推進」、「安全でおいしい水の供給」の三つの主要施策の方向性について明らかにしている。

　この三つの主要施策の方向性に基づき、18 の取組を具体化するとともに、目標として２１の指標を定め、施設整備を着実に推進し、将来にわたる首都東京の安定給水の確保に万全を期していく。


⑧ Master Plan for Construction of Tokyo Waterworks FacilitiesThe Bureau of Waterworks has shown to the public what Tokyo Waterworks should be by describing them in the “Tokyo Waterworks Principal Vision STEP II” and the “Basic Concept for Renewal of Tokyo Waterworks Facilities”.To embody ideas presented in those visions, the “Master Plan for Tokyo Water Supply Facility Development” was formulated in April 2014 (revised in February 2016) in order to: clarify the direction of medium-to-long-term facility development after summarizing current status of waterworks services in Tokyo; set the development target in 10 years and specific efforts to achieve the target; and reflect them in the future business plans.The period of the plan is 10 years from FY 2016 to FY 2025.The Master Plan clarifies the directions of three main policy measures, namely “ensuring stable water supply”, “promoting earthquake countermeasures” and “providing potable delicious water”, after summarizing the ideas of facility capacity, facility renewal and water demands, all of which will be the essential factors for the future facility development. Based on the directions of those three main policy measures, we will put 18 projects into concrete shape, as well as setting 21 indexes as targets, steadily promoting the facility development and making every possible effort to ensure stable water supply in the capital Tokyo over the future.


20


安定給水の確保

取組１水源の確保

取組９貯水池及び取水・導水施設の耐震化

取組16 多摩川水系の水質対策

Ensuring stable w

ater supply

震災対策等の推進

Promoting earthquake co

untermeasures

安全でおいしい

水の供給

Providing

potable delicio

uswater

Project 1 Securing water resources

取組３設備機器の更新Project 3 Renewing facility equipment

取組２浄水場の更新及び浄水施設の覆蓋化Project 2 Renewing water purification plants and covering water purification facilities

取組４導水施設の二重化Project 4 Duplexing of conveyance facilities

取組５送水管の二重化・ネットワーク化

取組７多摩地区の小規模浄水所の再構築等

Project 5 Duplexing and networking of transmission pipes

Project 7 Restructuring small‐scale purification plants in Tama area

取組６給水所の新設・拡充

取組８多摩地区の配水区域の再編

Project 6 Establishing and expanding water supply stations

Project 8 Restructuring the distribution areas in Tama area

Project 9 Reinforcing quake resistance of reservoirs & water intake/conveyance facilities

取組11 配水池の耐震化Project 11 Reinforcing quake resistance of distribution reservoirs

取組10 浄水施設の耐震化Project 10 Reinforcing quake resistance of water purification facilities

取組12 配水管等の耐震化Project 12 Enhancement of strength of Tokyo as an urban city / Contribution to Japan and overseas

取組13 給水管の耐震化Project 13 Reinforcing quake resistance of service pipes

取組14 自家用発電設備の増強等Project 14 Reinforcing non-utility power generation facilities

取組15 浸水対策Project 15 Flood damage prevention

Project 16 Measures concerning water quality of the Tamagawa River system

取組17 貯水槽水道の適正管理Project 17 Appropriate management of receiving tanks

取組18 直結給水方式への切替え促進Project 18 Promoting shift to the direct water supply system

バックアップ機能の強化

Enhancementbackup functions

浄水場の更新

Renewingwater purification plant

水源の確保

Securingwater resources

施設の耐震化

水質への対応

多摩地区の施設整備

Facility developmentin Tama area

Reinforcingearthquake-resistanceof facilities

電力の自立化

Promotion ofautonomouspower generation

管路の耐震化

Reinforcingearthquake-resistanceof pipelines

浸水対策

Flood damageprevention

Responding towater quality issues

直結給水方式への切替え

Shifting to the directwater supply system

Figure: 18 Specific Projects

図　18の具体的取組


21

⑨東京水道イノベーションプロジェクト　本プロジェクトは、2018 年国際水協会（IWA）世界会議・展示会や、東京 2020 オリンピック・パラリンピック競技大会、さらにその先の将来を見据え、多様な主体と連携し、世界一の東京水道システムをさらに進化させ、国内外へ発進するものである。

　水道局は、これまで水源から蛇口まで、総合的な取組を進め、現在では、世界トップレベルの低漏水率、災害時にも水を届けるバックアップ機能、高度浄水処理による安全でおいしい水を供給している。こうした中、それらの取組をお客さまに理解していただく必要がある。

　都民ファーストの視点に立ち、お客さまの共感・理解を得ていくため、今後国内外から多くの方々が集まる 2018年国際水協会（IWA）世界会議・展示会や、東京 2020オリンピック・パラリンピック競技大会などを、東京水道の魅力を発信する絶好の機会ととらえ、東京水道の強みや魅力を発信する各種施策を展開していく。

主な施策として、○ 良好な水道水源を確保するため、企業や団体等と協定を

結び、間伐・枝打等の森林保全活動を行う施策

○ 疑似断水体験、応急給水、給水袋による運搬等を体験しながら水道の大切さを再認識してもらう施策

○ 海外だけでなく、漏水率が高い国内事業体に対し、漏水率低減に向けて研修生受入れや専門講師を派遣する等の技術面からのサポートを行う施策

　がある。

プロジェクトは常に見直しを図り、進化させるとともに、時宜をとらえて絶え間ない発信をしていく。


⑨ Tokyo Waterworks Innovation ProjectThis Project aims at cooperate with various actors, evolve the world’s leading Tokyo Waterworks system further and promote it in Japan and overseas with an eye towards the IWA World Water Congress & Exhibition 2018, Tokyo 2020 Olympic and Paralympic Games, and the future further ahead of them.

Tokyo Waterworks has implemented comprehensive initiatives extending to the process from water sources through water outlets, currently attains world leading level of low leakage rate and has a back-up function that enables water supply even at the time of disasters, and continues to supply potable delicious water through advanced water treatment. In this situation, it is necessary to have customers’ understanding of initiatives and measures taken by Tokyo Waterworks.

In order to gain sympathy and understanding of customers from the standpoint of “Tokyo Citizens First,” we will consider the IWA World Water Congress & Exhibition 2018 and the Tokyo 2020 Olympics and Paralympic Games, in which a large number of people gathered together from inside and outside of Japan, as a great opportunity to introduce the attractions of Tokyo Waterworks and will develop various measures to promote the strengths and attractions of Tokyo Waterworks.

The main measures are as below:• Measures to secure good water source by concluding

agreements with companies, organizations, and others and carrying out forest conservation activities such as thinning and branching

• Measures to remind the importance of waterworks by providing experiences on mock water outage, emergency water supply, and transportation of water supply bags

• Measures to offer technical supports not only to foreign utilities but also to domestic utilities with high leakage rates by accepting trainees and dispatching professional lecturers to reduce the leakage rate.

The proposed initiatives are reviewed constantly, are developed further and are reported publicly continuously at appropriate times.

Water Suspension Experience断水体験

Voluntary Activities for Protection of Forestsボランティアによる森林保全


2 outline of tokyo waterworks 2 東京都水道局の概要...tama river mixed river system of the...

Documents