2013-02-18

Domestic Wastewater ManagementinMega Manila: Public-Private
Partnership

WEPA International Workshop
18-20 February 2013
Siem Reap, Cambodia

The Metropolitan Waterworks
and Sewerage System (MWSS)
 Provides water supply
and wastewaterrequirements ofapproximately 15
million people in theNational Capital Region
including the Provincesof Cavite and Rizal

Metro Manila

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The Situation in 19973% of Population

85% of Homes

58% of Pollution

Connected toSewerage Systems

Using Only
Septic Tanks

Contributed by
Domestic Sources

Sanitation Condition
35% reside in informal "slum"
settlements
ttlt withith improperisanitation facilities

Wastewater continues todischarge to rivers, morethan half of which comefrom households

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River Condition

Major bodies of water in Metro Manila are consideredbiologically dead or unsuitable to marine life

1997 Regulatory Reform “PPP”
NATIONAL WATER CRISIS ACT
Metropolitan Waterworks and Sewerage System (MWSS) Expand service
coverage Improve service
delivery Increase operating
efficiency
 Transfer financial
burden to private
sectorCONCESSIONAGREEMENT 25 years
cooperation
period 15 years term
extension Assets still
belong toMWSS32013-02-18

The Regulatory Environment
Metropolitan Waterworks & Sewerage System

Board of Trustees
Department ofEnvironment &NaturalResources(DENR)

Pollution
ControlStandards
d d

REGULATORY OFFICE
Tariff,ServiceStandards

Department ofHealth(DOH)

Drinking
Water
QualityConcessionaires

The Approach1997 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

Decentralized Upgrade of Existing Communal Septic Tanks
Septage ManagementCombined Sewer‐Drainage Systems

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Philippine Clean
Water Act of 2004
 In areas where there are nosewerage systems, water utilities
mayadopt
asanitation
improvement program that will
regularly remove septage toincrease the performance of
septic tanks

Mandate to Fast Track Sewer Plans

Strong pressure on the two water
concessionaires/Metropolitan Waterworks
and Sewerage System….to fast‐track theconstruction of the sewerage system…there is a need to accelerate
the provision of seweragesystems

Their responsibility toprovide seweragesystem…
becomes urgent andextremely necessary…

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Concession Agreement Term
Extension
Reasons for Extension
15 years term extension 2037
Accelerate sewerage/sanitation coverage•Appropriate technology, materials, and design standards•Optimum costs•Minimum impact•Aligned with environmental protection and regulatory mandates

Support MWSS on the development of long term watersources
Mitigate tariff impact on consumers

Key Strategies

Upgrade of Communal
Septic Tanks (CSTs)
Convert existing CSTs todecentralized STPs
Optimize connections toexisting separate sewersystem

Septage
Management
Septic tanks desludging inthe cycle of 5‐7 years
Sludge treatment to septage
treatment plants

Combined Sewer‐Drainage System
For areas served byindividual septic tanks
Use of drainage system
Laying of interceptors

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THE GOALSEWERAGE AND SANITATION 100%

2037

Opportunities and Challenges

Strong Public‐Private
Public Private Partnerships
Strong Regulatory Framework
Stakeholder Management
Flexibility, Innovations, Best Practices
Tariff Implications and Quality Service

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