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Domestic Wastewater Management inDomestic Wastewater Management in Mega Manila: Partnership in Action
L C Cl f
Securing the Future Today
Leonor C. Cleofas
Deputy Administrator
Metropolitan Waterworks and Sewerage System
The MWSS PrivatizationThe MWSS Privatization
On August 01, 1997, the operation of Metro Manila’s waterworks and sewerage system was privatized under a Concession Agreement for 25 years.
The entire service area was divided into east and west service areas with specific targets for water supply, sewerage & sanitation. Assets still belong to MWSS.
Objectives Transfer financial burden to the private
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sector Improve service standards Increase operational efficiencyMinimize tariff impact
2
As of December 2010West Zone
Maynilad
East Zone
Manila Water
Land Area
(sq. km.)540 1,400
MWSS Service Area
• The world’s largest water concession arrangement
Service Area17 cities/
Municipalities
23 cities/Municipalities
Total Population
8.40 M 6.80 M
Population Served
7.40 M 5.90 M
Raw Water All ti
2,400 mld 1,600 mld
Securing the Future Today
concession arrangement covering 1,940 sq. km and serving 15.8 million people (2011)
Allocation2,400 mld 1,600 mld
% Water Supply
Coverage88% 87%
% Sewerage Coverage
8% 23%
Outline
Conditions Prior to PPP
Evolution of Service Coverageg
Strategies
Addressing Challenges
4
Progress
3
Outline
Conditions Prior to PPP
Evolution of Service Coverageg
Strategies
Addressing Challenges
5
Progress
1997 Situation
La MesaLa MesaDamDam
AngatAngatDamDam
<8% Sewer Coverage
Minimal Septage Treatment
No septage treatment plant and no approved sludge disposal site
Manila Manila BayBay
Pasig Pasig RiverRiver
MarikinaMarikinaRiverRiver
San JuanSan JuanRiverRiver
6
Laguna LakeLaguna Lake
4
Outline
Conditions Prior to PPP
Evolution of Service Coverageg
Strategies
Addressing Challenges
7
Progress
10000
15000
20000
Water Supply Coverage
atio
n ‘0
00
0
5000
1997 2011
15000
20000 20000
‘000
‘000
Pop
ul
0
5000
10000
15000
1997 2011
0
10000
1997 2011
Sewer Coverage Septage Management Coverage
Pop
ulat
ion
Pop
ulat
ion
‘
5
Outline
Conditions Prior to PPP
Evolution of Service Coverageg
Strategies
Addressing Challenges
9
Progress
The Approach
1997 Concession Agreement Vision:Centralized STPs and Dedicated Sewer Systems
1997 Concession Agreement Vision:Centralized STPs and Dedicated Sewer Systems
Huge Investment = Higher Tariff Significant Construction Impact Customer Resistance (Water as a Priority) Difficulty in Securing Land
D t li d U d f E i ti CST
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Decentralized Upgrade of Existing CSTsSeptage Management
Combined Sewer‐Drainage Systems
6
Key Strategies
Convert existing CSTs to S ti T k D l d i For areas served by
Upgrade of Communal Septic Tanks (CSTs)
Septage Management
Combined Sewer‐Drainage System
11
gdecentralized STPs
Utilize pre‐existing dedicated (separate) sewer networks
Septic Tank Desludgingevery 3‐5 years
Septic tank sludge sent to treatment facilities
For areas served by individual septic tanks and with no existing sewer network
Key Strategies
Convert existing CSTs to S ti T k D l d i For areas served by
Upgrade of Communal Septic Tanks (CSTs)
Septage Management
Combined Sewer‐Drainage System
12
gdecentralized STPs
Utilize pre‐existing dedicated (separate) sewer networks
Septic Tank Desludgingevery 3‐5 years
Septic tank sludge sent to treatment facilities
For areas served by individual septic tanks and with no existing sewer network
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Communal Septic Tank Issues
Operational Inefficiency
Lack of maintenance
Outlets not working
Illegal structures built on top
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Communal Septic Tanks
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8
Community STPs
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Key Strategies
Convert existing CSTs to F S ti T k D l d i For areas served by
Upgrade of Communal Septic Tanks (CSTs)
Septage Management
Combined Sewer‐Drainage System
16
gdecentralized STPs
Utilize pre‐existing dedicated (separate) sewer networks
Free Septic Tank Desludgingevery 3‐5 years
Septic tank sludge sent to treatment facilities
For areas served by individual septic tanks and with no existing sewer network
9
Septage Management
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Key Strategies
Convert existing CSTs to F S ti T k D l d i For areas served by
Upgrade of Communal Septic Tanks (CSTs)
Septage Management
Combined Sewer‐Drainage System
18
gdecentralized STPs
Utilize pre‐existing dedicated (separate) sewer networks
Free Septic Tank Desludgingevery 3‐5 years
Septic tank sludge sent to treatment facilities
For areas served by individual septic tanks and with no existing sewer network
10
Combined Sewer‐Drainage Systems
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Outline
Conditions Prior to PPP
Evolution of Service Coverageg
Strategies
Addressing Challenges
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Progress
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Main Challenges
Land Availability
Stakeholder Endorsement
Cooperation with Government Agenciesp g
Social Acceptability
Operational Challenges
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Land AvailabilityLand Availability
Scarcit of lar e a ailable spaces Scarcity of large available spaces
High cost of land
Feasible locations for STPs mostly occupied by informal settlers or privately owned
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ChallengesChallenges
● Solid Waste & Drainage Maintenance
♦ Drainage systems are clogged with solid wastes♦ Drainage systems are clogged with solid wastes
♦ Indiscriminate dumping of solid wastes in canals, creeks, river systems
♦ Wastewater utility should not be the solid waste manager
Technology Options that will give a smaller footprints
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ChallengesChallenges
● MWSS/Concessionaires need to comply with the Clean Water Act and to comply with the decision of the Supreme Court in the clean up and rehabilitation of Manila Bay
♦ Concessionaires shall implement the MWSS Master Plan to broaden and fast track the sewerage and sanitation services
♦ Implementation of a combined system for areas where separate system is not doable
♦ Due to land constraints, different technology options are being considered that will result in a smaller footprints
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♦ Coordinated advocacies and policies towards behavioral changes on dumping of solid wastes
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Outline
Conditions Prior to PPP
Evolution of Service Coverageg
Strategies
Addressing Challenges
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Progress
YEAR 1997 2011
Sewage Treatment Pl t
4 41
Wastewater Facility Overview
Plants
Capacity 53,150 CMD 585,994 CMD
SeptageManagement Facilities
0 3
Capacity 0 1,951 CMD
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Scaling UpScaling UpSanitation and SewerageSanitation and Sewerage
• The 25 year Concession Agreement was extended by another 15 years (to 2037) with the condition to accelerate and double the investment for sewerage and sanitation and to support the development of new water sources.
14% 30% 66% 100%
2018 2037
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2008‐2012 2013‐2016 2017‐2021 2022‐2037 TOTAL
Maynilad US$ 113 M US$ 411 M US$ 604 M US$ 622 M US$ 1.75 B
Manila Water US$ 295 M US$ 680 M US$ 164 M US$ 481 M US$ 1.62 B
30% 45% 63% 100%
SALAMATTHANK YOU
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Stakeholder EndorsementStakeholder Endorsement
Public Consultations Support from LGUs and
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Public Consultations Support from LGUs and other stakeholders
Social AcceptabilitySocial Acceptability
Low willingness to Pay • Comprehensive Tariff Structure
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Lack of Public Information and Awareness
• Strengthen Media Relationships
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Operational ChallengesOperational Challenges
Lack of expertise
Testing and Testing and CommissioningCommissioning
CrossCross‐‐functional functional T i i PT i i P
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Commissioning Commissioning StrategiesStrategies
Training ProgramTraining Program
Accomplishment: Accomplishment: SeptageSeptage ManagementManagement
722 608
826,870
852,848
800,000
900,000 Households Served
4,380 16,016 36 60070,181
107,811 162,069
267,178
455,413
722,608
100,000
200,000
300,000
400,000
500,000
600,000
700,000
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95 601 1,133 1,796 36,600
‐
199719981999200020012002200320042005200620072008200920102011
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38 Sewage
Treatment Plants
135 million liters
capacity
IMPROVED SEWER COVERAGE Lar est se era e operator in the Philippines
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Largest sewerage operator in the Philippines
Operates the most number of STPs with the biggest treatment capacity
IMPROVED SANITATION / SEPTAGE MANAGEMENT
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COVERAGE The leading septage management system in the region
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Combined Systems First combined system
Built under a basketball court
Pineda STP
4 MLD
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Combined Systems Awarded for its state‐of‐the‐art flood mitigating design integrated
with a community park
Olandes STP
REGIONAL WINNER
10 MLD
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REGIONAL WINNERProject Innovation AwardsSingaporeJune 2010
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Combined Systems STP on stilts built on a flood control lagoon
Poblacion STP
11 MLD
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Marikina
San Mateo
Quezon City
Rodriguez
Wastewater Expansion: The 3‐River Master Plan
100% Sewer Coverage for the Marikina, San Juan, Pasig River Catchment (2018)
Will treat over 1 billion liters daily of Marikina
MakatiPasig
San Juan
Taguig
Pasig River Catchment
San Juan RiverCatchment
Marikina RiverCatchment
ywastewater
Estimated Investment of PhP 50 Billion
Still subject to refinement and MWSS‐RO Approval
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Catchment
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