The document discusses urban sanitation in Denpasar, Indonesia. It provides an overview of the Denpasar Sewerage Development Project (DSDP), which aims to provide sewerage infrastructure to over 400,000 people in Denpasar. The DSDP is being implemented in phases and includes sewer networks, pumping stations, and a wastewater treatment plant. Challenges remain around maximizing connections, tariff collection, operation and maintenance, and expanding services to other areas. Proper management of septic tank sludge and development of on-site sanitation through community programs are also ongoing efforts.

1. THIRD EAST ASIA MINISTRIAL CONFERENCE ON
SANITATION AND HYGIENE (EASAN-3)
DENPASAR SEWERAGE AND
ITS CONTRIBUTION TO
MDG ACHIEVEMENT
INDONESIA
10 September 2012
SATUAN KERJA PENGEMBANGAN
MINISTRY OF PUBLIC WORKS
PENYEHATAN LINGKUNGAN PERMUKIMAN
DIRECTORATE GENERAL OF HUMAN
BALI
SETTLEMENTS
DIRECTORATE OF ENVIRONMENTAL SANITATION DEVELOPMENT 1
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2. Approach Concept of Urban Sanitation in Greater Denpasar
Population
Population
Administrative division Area (km²) density
(2010 Census)
(/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-
911 1,802,157 1,979
Up)
Tabanan Regency 839 420,913 500
Greater Denpasar
1,750 2,223,070 1,270
(SARBAGITA)
3-Level Approach Concept 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 Communitie

3. Off-Site Sanitation - DSDP
History of DSDP
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
Construction DSDP-1
ICB (Sewer, PS, IPAL)
DSDP-1 has overcome Problems: LCB (HC, local Sewer)
Land Acquisition (WWTP, PS); L/A (JBIC) DSDP-2
Finance arrangement between
central and local governments; Detailed Design DSDP-2
Protest against WWTP;
Objection to sewer construction in Construction DSDP-2
Kuta; ICB (Main Sewer)
Asian Currency Crisis (1997); LCB (HC, local Sewer)
Bomb Terror in Kuta (2002 & 2005)
Formation of BLUPAL May-07 Operation
Retribution Tariff Sep-11
Asian Currency Formation of UPT-PAL Jan-12 ⇒ PPK BLUD
Bomb Terror
Crisis
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

4. DSDP PROJECT AREA
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5. Implementation Plan of DSDP
Project 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
Phase 1 Phase 2 Phase 3 Total
Population
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 area
Note: Connection Ratio updated based on the latest door-to-door survey
No. of House
Phase 1 Phase 2 Phase 3 Total
Connection
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

6. DSDP PROJECT COMPONENT
WWTP
Treatment Method: Aerated Lagoon + Sedimentation Pond
Daily average flow 51,000 m3/d
Total Volume of Lagoon 95,078 m3
Retention time in AL 1.9 days
No. of Aerator (total) 21 nos
Motor output 15 kW/unit
Total Output 315 kW
Unit output 3.3 W/m3
Effluent Standard (BOD) 50 mg/L
Effluent actual (BOD) 20 - 40 mg/L
Main Sewer (Phase 1 and Phase 2)
Collection System Separate system
Total Length 245 km
Pumping 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) 6
dia. 800 – 1200 mm

7. Achievement
Component Achievement
Off-Site Sanitation Upon completion of DSDP Phase 2 which is smoothly
DSDP ongoing, served population will reach 126,000, or area
coverage will be 47% of the entire Master Plan service
area.
On-Site Sanitation DSDP WWTP is accepting much more sludge than at the
(Septic Tank Sludge) 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 12 SANIMAS units to serve 1,091 households (2003 - 2011)
(SANIMAS) in Denpasar city, Tabanan and Gianyar Regencies
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

8. 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 •Maximize house connections
(DSDP) •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 •Application of sewerage system to other urban core areas (i.e. Tj. Benoa in
(Expansion) Nusa Dua and Ubud)
On-Site Sanitation (1) •Development of standard process design for efficient Sludge Treatment Plants
(Septic Tank Sludge) 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) •Smooth implementation with finance
(SANIMAS) •Mutual cooperation with various players (local government, NGOs, donors,
community, etc.)
•Maintenance of facility by community