Domestic Wastewater Management in Mega Manila: Partnership in Action
Leonor C. Cleo fas Deputy Administrator Metropolitan Waterworks and Sewerage System
Securing the Future Today
The 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 sector Improve service standards Increase operational efficiency Minimize tariff impact
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1 MWSS Service Area As of December 2010 West Zone East Zone Maynilad Manila Water
Land Area 540 1,400 (sq. km.)
17 cities/ 23 cities/ Service Area Municipalities Municipalities
Total 8.40 M 6.80 M Population
Population 7.40 M 5.90 M • The world’s largest water Served Raw Water 2,400 mld 1,600 mld concession arrangement Allocati on covering 1,940 sq. km and % Water Supply 88% 87% serving 15.8 million people Coverage (2011) % Sewerage 8% 23% Coverage Securing the Future Today
Outline Conditions Prior to PPP
Evolution of Service Coverage
Strategies
Addressing Challenges
Progress
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2 Outline Conditions Prior to PPP
Evolution of Service Coverage
Strategies
Addressing Challenges
Progress
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1997 Situation
Angat <8% Sewer Coverage Dam
La Mesa Dam Minimal Septage Treatment
San Juan River
Marikina River No septage treatment plant and no approved sludge disposal site
Manila Bay Pasig River
Laguna Lake
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3 Outline Conditions Prior to PPP
Evolution of Service Coverage
Strategies
Addressing Challenges
Progress
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Water Supply Coverage
20000 15000
10000ation ‘000 5000 Popul 0 1997 2011
20000 20000 ‘000 000 ‘ 15000‘ 10000 10000
5000 Population Population 0 0 1997 2011 1997 2011 Sewer Coverage Septage Management Coverage
4 Outline Conditions Prior to PPP
Evolution of Service Coverage
Strategies
Addressing Challenges
Progress
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The Approach 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
DtlidDecentralized UdUpgrade of EitiExisting CSTs Septage Management Combined Sewer‐Drainage Systems
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5 Key Strategies
Upgrade of Communal Septage Combined Sewer‐ Septic Tanks (CSTs) Management Drainage System
Convert existing CSTs to StiSeptic TkTank DldiDesludging For areas served by decentralized STPs every 3‐5 years individual septic tanks and Utilize pre‐existing Septic tank sludge sent to with no existing sewer dedicated (separate) sewer treatment facilities network networks
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Key Strategies
Upgrade of Communal Septage Combined Sewer‐ Septic Tanks (CSTs) Management Drainage System
Convert existing CSTs to StiSeptic TkTank DldiDesludging For areas served by decentralized STPs every 3‐5 years individual septic tanks and Utilize pre‐existing Septic tank sludge sent to with no existing sewer dedicated (separate) sewer treatment facilities network networks
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6 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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7 Community STPs
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Key Strategies
Upgrade of Communal Septage Combined Sewer‐ Septic Tanks (CSTs) Management Drainage System Convert existing CSTs to Free StiSeptic TkTank DldiDesludging For areas served by decentralized STPs every 3‐5 years individual septic tanks and Utilize pre‐existing Septic tank sludge sent to with no existing sewer dedicated (separate) sewer treatment facilities network networks
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8 Septage Management
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Key Strategies
Upgrade of Communal Septage Combined Sewer‐ Septic Tanks (CSTs) Management Drainage System Convert existing CSTs to Free StiSeptic TkTank DldiDesludging For areas served by decentralized STPs every 3‐5 years individual septic tanks and Utilize pre‐existing Septic tank sludge sent to with no existing sewer dedicated (separate) sewer treatment facilities network networks
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9 Combined Sewer‐Drainage Systems
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Outline Conditions Prior to PPP
Evolution of Service Coverage
Strategies
Addressing Challenges
Progress
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10 Main Challenges Land Availability Stakeholder Endorsement Cooperation with Government Agencies Social Acceptability Operational Challenges
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Land Availability
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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11 Challenges
● Solid Waste & Drainage Maintenance ♦ 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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Challenges
● 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
♦ Coordinated advocacies and policies towards behavioral changes on dumping of solid wastes
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12 Outline Conditions Prior to PPP
Evolution of Service Coverage
Strategies
Addressing Challenges
Progress
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Wastewater Facility Overview
YEAR 1997 2011 Sewage Treatment 441 Plan ts Capacity 53,150 CMD 585,994 CMD Septage Management 03 Facilities Capacity 0 1,951 CMD
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13 Scaling Up Sanitation 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. 2018 2037
14% 30% 66% 100%
30% 45% 63% 100%
2008‐2012 2013‐2016 2017‐2021 2022‐2037 TOTAL Maynilad US$ 113 MUS$ 411 MUS$ 604 MUS$ 622 MUS$ 1.75 B Manila Water US$ 295 MUS$ 680 MUS$ 164 MUS$ 481 MUS$ 1.62 B
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SALAMAT THANK YOU
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14 Stakeholder Endorsement
Public Consultations Support from LGUs and other stakeholders
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Social Acceptability
Low willingness to Pay • Comprehensive Tariff Structure
Lack of Public Information and • Strengthen Media Relationships Awareness
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15 Operational Challenges Lack of expertise
Cross‐functional Testing and TiiTraining Program Commissioning Strategies
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Accomplishment: Septage Management
900,000 Households Served 852,848
800,000 826,870 700,000 722,608 600,000 500,000 455,413 400,000 300,000 267,178 200,000 162,069 100,000 107,811 70,181 4,380 16,016 36,600 ‐ 95 601 1,133 1,796 199719981999200020012002200320042005200620072008200920102011
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16 38 Sewage Treatment Plants 135 million liters capacity
IMPROVED SEWER COVERAGE LLararges estt seweragese era e operatoroperator iinn ththee PhiliPhilippinesppines
Operates the most number of STPs with the biggest treatment capacity
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IMPROVED SANITATION / SEPTAGE MANAGEMENT COVERAGE The leading septage management system in the region
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17 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
10 MLD
REGIONAL WINNER Project Innovation Awards Singapore June 2010
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18 Combined Systems STP on stilts built on a flood control lagoon
Poblacion STP
11 MLD
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Wastewater Expansion: The 3‐River Master Plan
100% Sewer Coverage for the Marikina, Rodriguez San Juan, Pasig River Catchment (2018)
San Mateo Will treat over 1 billion liters daily of Quezon City Marikina wastewater San Juan River Marikina River Catchment Catchment Estimated Investment of PhP 50 Billion
San Juan
Still subject to refinement and MWSS‐RO Pasig Approval Makati Taguig Pasig River Catchment
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