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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

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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

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Progress

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Outline

Conditions Prior to PPP

Evolution of Service Coverageg

Strategies

Addressing Challenges

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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

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Laguna LakeLaguna Lake

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Outline

Conditions Prior to PPP

Evolution of Service Coverageg

Strategies

Addressing Challenges

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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

‘

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Outline

Conditions Prior to PPP

Evolution of Service Coverageg

Strategies

Addressing Challenges

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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

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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

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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

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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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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

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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

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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

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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

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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