septage management experience inseptage management experience in the east zone of metro manila...

2013‐02‐18

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Septage Management Experience in The East Zone of Metro Manila

Securing the Future Today

Mark Tom MulingbayanManila Water Company

19 February 2013

Metropolitan Waterworks and Sewerage System (MWSS)

Privatization of water utility operations in Metro Manila

WEST ZONE EAST ZONE

CONCESSION AGREEMENT

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1997 to 2022, extended to 2037

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More than 80%More than 80% of Metro Manila uses septic tanks most of which are improperly designed andimproperly designed and

Sanitation Challenges

improperly designed and improperly designed and not wellnot well‐‐maintainedmaintained

~31% 31% of illnessesof illnesses monitored f 5 i d

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for a 5‐year period were caused by caused by 

water water ‐‐ borne sourcesborne sources

Manila Water’s wastewater service expansion strategies

Septic Tank Desludging & Septage Treatment

Decentralized Separate Sewer

Systems

Combined Sewer-Drainage Systems

• septic tank desludging for customers every 5 years

• for areas with pre- existing separate sewer networks

• for areas served by individual septic tanks and with no

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customers every 5 years

• septic tank sludge is sent to septage treatment facilities

separate sewer networks septic tanks and with no existing sewer network

• intercept graywater from street canals for full treatment

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Conditions before Privatization

LEAKS

Water Supply Availability3.1M Customers

ILLEGAL CONNECTIONS

POORCUSTOMERSERVICE

26%26% LOW WATER PRESSURE/NO WATER

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Low Sewer Coverage,No Septage Management Service

Fast track Sewerage and Septage Management Plans

100%Marikina RiverCatchment

3% 16% 23%

Pasig River Catchment

San Juan RiverCatchment

Laguna Lake

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1997 2008 2010

aguna ake

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Accomplishments

• 78 Vacuum tankers 

for desludging

• 2 Septage Treatment2 Septage Treatment 

Plants (SpTP)

• Desludged more 

than 70%households to

North SpTP586 m3/dayNorth SpTP586 m3/day

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households to date

Communities served

LEGENDLEGEND South SpTP814 m3/daySouth SpTP814 m3/day

Requirements

• Manila Water customerN

For domestic customers

Scheduled for non‐seweredcommunities every 5 years

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• No payment arrears• Accessible

communities every 5 years

Service does not include opening and sealing of septic tanks

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Septage Management System Overview

Desludging WorksDesludging Works

Wastewater Treatment 

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Septage Treatmentand Dewatering

Biosolids Disposal

Larger capacity trucks ‐ for wide roads

Inaccessibility

Smaller capacity – for areas with difficult or narrow access

Vacuum Trucks Capacity: 

• 10m3

• 5m3

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5m

• 1.5m3

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Desludging ‘sweeps’ one barangay/village at a time

Inefficiencies

Planned collection routes, time of collection and customer coordination

Extra charges for households who request

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households who request for unscheduled desludging service

Dewatered septage(biosolids) are used as soil conditioner in

Biosolids Disposal

soil conditioner in agricultural fields in lahar‐devastated areas north of Metro Manila

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Integrated approach to Talent Management

Solutions to operational constraints

Talent Management

Innovative Engagement on th l b i t i k f

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the labor‐intensive work of collection and treatment operation

COMMUNITY EDUCATION: SHORT FILM

Educating and involving our customersPROACTIVE CUSTOMER 

SERVICECONSULTATIONS / 

DIALOGUES

COMMUNITY EDUCATION: WATER TRAIL TOUR

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Cooperation with government agencies

Health and Environmental Management

Provision and enforcement offrameworks, policies and technical

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pstandards for collection, treatmentand disposal

Partnership with local gov’t & donor‐assisted projects

• Partnership with Marikina City in 2008.• City ordinance required mandatory septic tank      desludging for all homes.  

• USAID LINAW project involved in social marketing.

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• Barangays coordinated with residents on schedules.• Manila Water provided the desludging services.

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Monitoring and Evaluation

Service Levels

Operational Efficiency

Customer Service

• Coverage Area

• Population Served

• Households

• Unit Costs for Desludging, Hauling, Treatment & Disposal

• Response Time

• Public Assessment of Sanitation Services by MWSS & 3rd

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Households Desludged

MWSS & 3rd 

party

Low Coverage

Operational

Constraints

Sanitation Challenges

g Constraints

Technical

C i

CustomerAcceptance

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Constraints Acceptance

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Fast Track Expansion Plans

Enhance Talent Development & 

Innovative 

Multi‐Pronged Approach

PlansEngagements

Provide Proactive Technical

Wastewater Advocacy & Relationship

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Technical Solutions

Relationship Management

Securing the Future Today