Dato' Lee Miang Koi

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SESSION 3: GREEN TECHNOLOGY (GT) FORSUSTAINABLE WATER AND SOLID

WASTE MANAGEMENT

HOW WATER SUPPLY SECTOR

CAN CONTRIBUTE TO µGOING

GREEN¶

GREEN ENERGY, TECHNOLOGY &INNOVATION SUMMIT 2010

¸15 & 16 June 2010 ¸ Kuala Lumpur Convention Centre

PANELIST: DATO¶ Ir. LEE MIANG KOI,CHIEF OPERATING OFFICER

SYABAS



AREA OF FOCUS

1. Reducing water losses or wastage

2. Reducing water use / consumption3. Energy efficient planning and

design



1.0 REDUCING WATER LOSSES / WASTAGE (NRW)

1.1 Current StatusC urrent Non Revenue Water Loss (NRW) level for Malaysia = 37% or 4917 MLDof total production (as of 2008)

Total National Production = 13,243 MLD (as of 2008)

Assuming demand growth of 3.5% per annum, production in 2015 = 16,850 MLD

If we reduce water loss to 25% by year 2015, we save 12%, or 2020 MLD of water

This saving provide (2020 MLD) additional supplies to 7.4 million peoplewithout need to invest on CAPEX for new resources (assuming 205lcdaverage water consumption in Malaysia)

Pipe Burst

Case of Water TheftPipe Leak

Note: Assumed demand growth = 3.5% per annum (2008 ± 2015)Demand in 2015 = 16,850MLDMetered consumption at NRW 25% in 2015 = 12,640 MLDMetered consumption at NRW 37% in 2015 = 10,620 MLDHence, saving of 2020 MLD



1.2 Reducing NRW means

± Use less water resources and its development required.

± Less water treatment cost because of lower treatedwater production.

± Less pumping, hence energy cost saving in distributionof water.

± Less operational cost due to lower pipe burst and leaksrepair works in distribution networks.

± Less distribution network upgrading required.

± More revenue through improved billing.



1.3 Strategy for Reducing Water Losses

Setting up District Metering Zone (DMZ) with pressure

management and active leak detection program

Reservoir overflow control

Pipe replacement

Meter replacement

Quick detection, response and repair of pipe bursts and

leaks

Theft and illegal use control

Pipe

replacement



2.0 REDUCING WATER USE/CONSUMPTION (DEMANDMANAGEMENT)

2.1 Current statusMalaysian uses an average of 205 lpcd (as of 2008)World average is 180 lpcdMany advanced countries use 150 lpcdIf we reduces water usage to world average of 180 lpcd, wesave 25 lpcd or 12 % or 675 MLD additional supplies to 3.75million people without need to invest on CAPEX

2.2 Reducing water use means ± Less water resources and its development required ± Less water treatment cost ± Less pumping, hence energy cost in distribution ± Less chemical use and disposal of treatment waste ± Less distribution network upgrading ± Less water bill by consumers



2.3 Strategies to reduce water use

Uses water saving devices in all buildings: dual flush system,

pressure reducing valve, time control tap, water saving shower, etc.

Government can provide incentives on water saving devices and / or

enforced it by mandatory use of such devices.Reduce subsidy and revise water tariff to reflect its real cost

(Malaysia water tariff is one of the cheapest in the world).

Encourage / provide incentive for recycling by major consumers.

Encourage rain water harvesting for some buildings.

Consumer education and awareness programmes.



3.0 ENERGY EFFICIENT PLANNING & DESIGN

In WTP, energy cost is 15% ± 30% of total operating costs.

In distribution system, energy cost is about 15 ± 20% of total operating

cost.

Opportunities for energy efficient planning and design.

Zoning supply areas with optimum pressure zones, to avoid excessive

pumping and supply pressure.

Promote use of direct pumping with variable speed pumping system

rather than pumping with gravity feed system.

To make it mandatory for pumping to storage at intermediate levels of

high rise buildings.

Use of more efficient pumpsets.

Use of pipe materials of lower friction.

All the above can reduce energy footprint for water supply and improve



CONCLUSION

Many areas in water supply sectors can play an important role to

µgoing green¶ and contributing to social and environmental

benefits.

Many available and more efficient technology with new concept tosuccessfully implement the identified strategies.

Human factors plays an important role contributing to going

green, from policy to human habits.

Central policy and political will is important towards achieving the

goal.

Public and private sectors can incorporate the strategies into

business plan.



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Dato' Lee Miang Koi