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SATUAN KERJA PENGEMBANGAN PENYEHATAN LINGKUNGAN PERMUKIMAN BALI

THIRD EAST ASIA MINISTRIAL CONFERENCE ON SANITATION AND HYGIENE (EASAN-3)

DENPASAR SEWERAGE AND ITS CONTRIBUTION TO

MDG ACHIEVEMENT INDONESIA

10 September 2012

MINISTRY OF PUBLIC WORKSDIRECTORATE GENERAL OF HUMAN SETTLEMENTSDIRECTORATE OF ENVIRONMENTAL SANITATION DEVELOPMENT

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Approach Concept of Urban Sanitation in Greater Denpasar

Off-Site SanitationDSDP Sewerage Service Area

Sewer NetworkCollection and Treatment

WWTP(Denpasar)

On-Site SanitationNon- Sewerage Service Area

Collection and Transportationof Septic Tank Sludge

Sludge Treatment Plant

(Tabanan & Gianyar)

SANIMAS

Dumping Site

Administrative division Area (km²)Population (2010 Census)

Population density (/km²)

Denpasar Municipality 124 788,445 6,400

Badung Regency 419 543,332 1,293

Gianyar Regency 368 470,380 1,300

Greater Denpasar (Built-Up)

911 1,802,157 1,979

Tabanan Regency 839 420,913 500

Greater Denpasar (SARBAGITA)

1,750 2,223,070 1,270

Target of Urban Sanitation:

1. Mitigation of Water Pollution:

River and groundwater as drinking water sources

Seawater for beach resorts

2. Improvement of sanitary condition at house-level

3. Mitigation of environmental pollution

* SANIMAS: Sanitasi oleh Masyarakat =　　　　　　　　 Sanitation by Communities

3-Level Approach Concept

1992 93 94 95 96 97 98 99 2000 01 02 03 04 05 06 07 08 09 2010 11 12 13 14 15 16

Master Plan & Feasibility Study (JICA)

Loan Agreement (JBIC) DSDP-1 (Extension)

Detailed Design

ICB (Sewer, PS, IPAL)

LCB (HC, local Sewer)

L/A (JBIC) DSDP-2

Detailed Design DSDP-2

Construction DSDP-2

ICB (Main Sewer)

LCB (HC, local Sewer)

Formation of BLUPAL

Retribution Tariff

Formation of UPT-PAL ⇒ PPK BLUD

1992 93 94 95 96 97 98 99 2000 01 02 03 04 05 06 07 08 09 2010 11 12 13 14 15 16

History of DSDP

Construction DSDP-1

Sep-11

Jan-12

May-07 Operation

Asian CurrencyCrisis

Bomb Terror

Off-Site Sanitation - DSDP

DSDP-1 has overcome Problems:

Land Acquisition (WWTP, PS);Finance arrangement between central and local governments;Protest against WWTP;Objection to sewer construction in Kuta;Asian Currency Crisis (1997);Bomb Terror in Kuta (2002 & 2005)

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Phase 1

Phase 2

Phase 3

DSDP PROJECTDSDP PROJECT AREAAREA

Implementation Plan of Implementation Plan of DSDPDSDPProject Area Phase 1 Phase 2 Phase 3 Total

Denpasar 520 280 1,823 2,623

Sanur 330 160 112 602

Kuta 295 365 244 904

Total 1,145 805 2,179 4,129

unit: person

Served Population

Phase 1 Phase 2 Phase 3 Total

Denpasar 32,200 52,300 280,200 364,700

Sanur 10,200 9,300 8,100 27,600

Kuta 8,700 13,200 3,300 25,200

Total 51,100 74,800 291,600 417,500

85% of Total Population in the areaNote: Connection Ratio updated based on the latest door-to-door survey

No. of House Connection

Phase 1 Phase 2 Phase 3 Total

Denpasar 5,326 3,300 16,680 25,516

Sanur 1,821 880 1,600 4,301

Kuta 1,861 3,500 720 6,081

Total 9,008 7,680 19,210 35,898

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DSDP PROJECTDSDP PROJECT COMPONENT COMPONENTWWTP Treatment Method: Aerated Lagoon + Sedimentation Pond

Daily average flow 51,000 m3/dTotal Volume of Lagoon 95,078 m3Retention time in AL 1.9 daysNo. of Aerator (total) 21 nosMotor output 15 kW/unitTotal Output 315 kWUnit output 3.3 W/m3Effluent Standard (BOD) 50 mg/L

Effluent actual (BOD) 20 - 40 mg/L

Main Sewer (Phase 1 and Phase 2)Collection System Separate systemTotal Length 245 kmPumping Facility Transfer pump station – 2 nos. (Sanur and Kuta)

Wet Pit Pump Station – 16 nos. Pipe Material: RC pipe and PVC Pipe Construction method Open Cut 232.6 km (dia. 200 – 1200 mm) Jacking Method 12.4 km (Denpasar and Kuta)

dia. 800 – 1200 mm

Key Activities for Success of DSDP = Public Campaign during the Construction Work (DSDP-2)Objectives of Public Campaign: To maintain smooth construction for avoiding objection of public To encourage willingness-to-connect To ensure willingness-to-pay for tariff To develop users’ understanding for O&M aspects

Activity and Tools of Public Campaign Door-to-door survey and distribution of information by facilitators Public consultation meetings (PCM) with local communities Media tools (newspaper ad, radio clip, poster, booklet and pamphlet) Workshop and Press Conference Study Tour for students

Achievement

Component Achievement

Off-Site Sanitation DSDP

Upon completion of DSDP Phase 2 which is smoothly ongoing, served population will reach 126,000, or area coverage will be 47% of the entire Master Plan service area.

On-Site Sanitation (Septic Tank Sludge)

DSDP WWTP is accepting much more sludge than at the two treatment plants in Tabanan and Gianyar, although it is a temporary measure.

The total capacity of the existing sludge treatment plants can serve 40,000 – 60,000 PE.

On-Site Sanitation (SANIMAS)

12 SANIMAS units to serve 1,091 households (2003 - 2011) in Denpasar city, Tabanan and Gianyar Regencies

Remaining Challenges

Component Remaining Challenges

General •Human resources development in sanitary engineering sector both public and private.

•Study of appropriate technology for sewage and sludge treatment to suit Indonesia’s local conditions

Off-Site Sanitation (DSDP)

•Maximize house connections•Tariff Retribution •Sustainable O&M of the sewerage facilities•Implementation of DSDP Phase 3 following the completion of Phase 2 in 2015•Modification of WWTP process to accept more volume of septic tank sludge

Off-Site Sanitation (Expansion)

•Application of sewerage system to other urban core areas (i.e. Tj. Benoa in Nusa Dua and Ubud)

On-Site Sanitation (1)(Septic Tank Sludge)

•Development of standard process design for efficient Sludge Treatment Plants to increase treatment capacity substantially

•Construction of more Sludge Treatment Plants•Monitoring of private sludge dumping sites for compliance with environmental

standards •Control of illegal dumping of sludge collected by private operators

On-Site Sanitation (2)(SANIMAS)

•Smooth implementation with finance•Mutual cooperation with various players (local government, NGOs, donors,

community, etc.) •Maintenance of facility by community