This document summarizes a presentation given by Indah Water Konsortium Sdn Bhd on their sewerage services operations in Malaysia and the impacts of climate change. Indah Water is Malaysia's national sewerage company responsible for providing services to over 19 million people. The presentation highlights several climate events like floods and slope failures that have disrupted services. It also outlines the consequences these events have had and the various actions Indah Water has taken to adapt operations and make them more resilient to climate change impacts.

1. Third East Asia Ministerial Conference On
Sanitation and Hygiene (Easan-3)
WASH Adaptation to Climate Change
- Wastewater Operator perspectives-
Bali, Indonesia
10-12 September 2012
Indah Water Konsortium Sdn Bhd
Kuala Lumpur, Malaysia

2. • Present an overview of climate change impact to the sewerage
services and operations of IWK in Malaysia.
• Highlight the multiple actions taken by IWK that contribute to
climate change resilient and adapt to climate change related
challenges.

3. Indah Water Konsortium Sdn Bhd (IWK), aanational sewerage company,
Indah Water Konsortium Sdn Bhd (IWK), national sewerage company,
established in 1994, wholly-owned by the Government of Malaysia, is responsible
established in 1994, wholly-owned by the Government of Malaysia, is responsible
for providing sewerage services to more than 19 million population nationwide , ,
for providing sewerage services to more than 19 million population nationwide
3.3 million customers. Provide responsive desludging services to approx.1.0
3.3 million customers. Provide responsive desludging services to approx.1.0
million IST //Pour Flush.
million IST Pour Flush.
5,780 Public
5,780 Public
Sewage
Sewage
Treatment
Treatment
Plants
Plants
838 Network
838 Network
Pump Stations
Pump Stations
15,700 km
15,700 km
Pipelines
Pipelines

4. Global
Priority Levels
Warming;
Depletion of
Resources ??
Environment
Protect Water
Resources
Public Health
Protect Water
Protect Water
Protect Water
Protect Water
Environment
Environment
Environment
Environment
Resources
Resources
Resources
Resources
Health
Public
Health
Public
Health
Public
Health
Public
Initial Eventual focus of priority
Priority for Gradual Shift of Eventual
on all 3 aspects plus a
Public Priority to Protecting
Priority to focus of
new dimension
Health Water Resources and
Protecting Water priority on all
Resources and
Environment 3 aspects Evolution
Environment
Immediate focus for the last 3 Decades is on
RIVER POLLUTION & WATER RESOURCES
FUTURE -- ??

5. EVENT CONSEQUENCES ACTIONS
(A) Floods • Service disruption • Raise levels – Control Panel, Blowers
• Damages to sewerage • Identified list of flood susceptible STPs
assets/facilities • Budget requisition from Regulators for critical
• Risk of widespread plants
pollution and • Refurbish and upgrade STPs; rationalization.
contamination • Introduced EWS to critical STPs (>1000)
• Increased O&M cost
(B) Slope Failure • Damage to public • Repair works carried out on case to case basis.
property • Critical plants had been identified
• Risk of damage to • Issues conveyed and communicated to
sewerage assets Regulators
• Public nuisance
• Increased O&M cost

6. EVENT CONSEQUENCES ACTIONS
(C) Increased average • Risk of non- • Increase inspection frequency of new sewer
compliance due to lines
sewage flow due to short-circuiting • Sewer rehabilitation – critical areas; Capital
infiltration • Increased energy Works program
usage
• Increased wear and
tear of equipment
• Increased energy and
maintenance cost
(D) Septic tank • Service disruption • Increase frequency of desludging – responsive
• Public nuisance basis
overflows due to • Risk of localized • Report defects to Regulators
surcharge pollution and • Educate premise owners/ community
contamination
• Customer
dissatisfaction

7. EVENT CONSEQUENCES ACTIONS
(E) Sewer Overflow • Public nuisance • Refurbishment of existing critical sewer to minimise
• Localized flooding infiltration
• Damage to public • Increase inspection frequency of new sewers
property • Increase frequency of inspection and maintenance of
• Risk of localized existing sewer
pollution and • Use treated effluent for sewer cleaning
contamination • Continuous public awareness
• Increased
maintenance cost
(F) Sewer Blockages • Service disruption • Responsive action – clear blockages
• Localized sewage • Increase frequency of sewer maintenance; use of
flooding treated effluent for sewer flushing & cleaning
• Increased • Continuous public awareness
maintenance cost

8. EVENT CONSEQUENCES ACTIONS
(G) Inefficient & • Sludge drying capacity • Drying beds are covered with roof
reduced • More MDUs are being built to increase turn
Ineffective Sludge • Effluent compliance around time
Management affected
• Odour
(H) Reduced capacity • Level of Service • Trenching sites are gradually replaced with
affected MDUs
for sludge disposal & • STPs effluent
damage to sludge compliance affected
disposal facility • Customer satisfaction
declines
• Environmental issues –
risk of contamination
& pollution increases

9. EVENT CONSEQUENCES ACTIONS
(I) Reduced carrying • Increase pollution load • Regulators introduced more stringent effluent
in the river quality discharge standard
capacity of • Water supply • Refurbishment of STPs
watercourses disruption • Capacity building – training of staffs
• Treatment Process optimization
• Explore Resource Recovery

10. • Climate change should be included as a driver for planning, creation
of sewerage assets and management.
•The need of awareness at all stakeholder for long term planning as
well as in policy and decision making process.
•Need better understanding of the key element in assessment,
planning, awareness and actions in the readiness process.
•Making available funding for capital and operational expenditure.
•Look at wastewater as a potential resource to be tapped for future
sustainability rather than utility or services.