Third East Asia Ministerial Conference On Sanitation and Hygiene (Easan-3)

WASH Adaptation to Climate Change - Wastewater Operator perspectives-

Indah Water Konsortium Sdn BhdKuala Lumpur, Malaysia

Bali, Indonesia10-12 September 2012

• 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.

5,780 Public

Sewage

Treatment

Plants

5,780 Public

Sewage

Treatment

Plants

838 Network Pump Stations838 Network Pump Stations

15,700 km

Pipelines

15,700 km

Pipelines

Indah Water Konsortium Sdn Bhd (IWK), a national sewerage company, established in 1994, wholly-owned by the Government of Malaysia, is responsible for providing sewerage services to more than 19 million population nationwide , 3.3 million customers. Provide responsive desludging services to approx.1.0 million IST / Pour Flush.

Indah Water Konsortium Sdn Bhd (IWK), a national sewerage company, established in 1994, wholly-owned by the Government of Malaysia, is responsible for providing sewerage services to more than 19 million population nationwide , 3.3 million customers. Provide responsive desludging services to approx.1.0 million IST / Pour Flush.

Public Health

Protect Water Resources

Environment

Prio

rity

Leve

ls

Evolution

Gradual Shift of Priority to

Protecting Water Resources and

Environment

Init ial Priority for

Public Health

Global Warming;

Depletion of Resources ??

Eventual focus of priority on all 3 aspects plus a

new dimension

Public Health

Evolution

Publ

ic

Hea

lth

Prot

ect W

ater

R

esou

rces

Envi

ronm

ent

Gradual Shift of Priority to Protecting Water Resources and

Environment

Publ

ic

Hea

lth

Prot

ect W

ater

R

esou

rces

Envi

ronm

ent

Eventual focus of

priority on all 3 aspects

Init ial Priority for

Public Health

Publ

ic

Hea

lth

Prot

ect W

ater

R

esou

rces

Envi

ronm

ent

Immediate focus for the last 3 Decades is on RIVER POLLUTION & WATER RESOURCES FUTURE -- ??

Publ

ic

Hea

lth

Prot

ect W

ater

R

esou

rces

Envi

ronm

ent

Eventual focus of priority on all 3 aspects plus a

new dimension

EVENT CONSEQUENCES ACTIONS

(A) Floods • Service disruption• Damages to sewerage

assets/facilities• Risk of widespread

pollution and contamination

• Increased O&M cost

• Raise levels – Control Panel, Blowers• Identified list of flood susceptible STPs• Budget requisition from Regulators for critical

plants• Refurbish and upgrade STPs; rationalization.• Introduced EWS to critical STPs (>1000)

(B) Slope Failure • Damage to public property

• Risk of damage to sewerage assets

• Public nuisance• Increased O&M cost

• Repair works carried out on case to case basis.• Critical plants had been identified• Issues conveyed and communicated to

Regulators

EVENT CONSEQUENCES ACTIONS

(C) Increased average sewage flow due to infiltration

• Risk of non-compliance due to short-circuiting

• Increased energy usage

• Increased wear and tear of equipment

• Increased energy and maintenance cost

• Increase inspection frequency of new sewer lines

• Sewer rehabilitation – critical areas; Capital Works program

(D) Septic tank overflows due to surcharge

• Service disruption• Public nuisance• Risk of localized

pollution and contamination

• Customer dissatisfaction

• Increase frequency of desludging – responsive basis

• Report defects to Regulators• Educate premise owners/ community

EVENT CONSEQUENCES ACTIONS

(E) Sewer Overflow • Public nuisance• Localized flooding• Damage to public

property• Risk of localized

pollution and contamination

• Increased maintenance cost

• Refurbishment of existing critical sewer to minimise infiltration

• Increase inspection frequency of new sewers• Increase frequency of inspection and maintenance of

existing sewer• Use treated effluent for sewer cleaning • Continuous public awareness

(F) Sewer Blockages • Service disruption• Localized sewage

flooding• Increased

maintenance cost

• Responsive action – clear blockages• Increase frequency of sewer maintenance; use of

treated effluent for sewer flushing & cleaning• Continuous public awareness

EVENT CONSEQUENCES ACTIONS

(G) Inefficient & Ineffective Sludge Management

• Sludge drying capacity reduced

• Effluent compliance affected

• Odour

• Drying beds are covered with roof• More MDUs are being built to increase turn

around time

(H) Reduced capacity for sludge disposal & damage to sludge disposal facility

• Level of Service affected

• STPs effluent compliance affected

• Customer satisfaction declines

• Environmental issues – risk of contamination & pollution increases

• Trenching sites are gradually replaced with MDUs

EVENT CONSEQUENCES ACTIONS

(I) Reduced carrying capacity of watercourses

• Increase pollution load in the river

• Water supply disruption

• Regulators introduced more stringent effluent quality discharge standard

• Refurbishment of STPs• Capacity building – training of staffs• Treatment Process optimization• Explore Resource Recovery

• 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.