MCWDs NRW JOURNEY Maria Rowan E. Tenedo 10 year NRW performance - - PowerPoint PPT Presentation

MCWD’s NRW JOURNEY

Maria Rowan E. Tenedo

10 year NRW performance

0.27 0.31 0.35

35.49 30.30

5points

NRW Reduction - THEN

Non Revenue Water

District Metering Area

Mainline Renewal

Addressing Physical Losses

Leak Detection Pressure Management Leak Repair Service Connection Rehab Meter Maintenance Pilferage

Non Revenue Water

• Unbilled Authorized Consumption
• Government entities can withdraw water in any fire hydrant.
• UAC computation is based on assumptions.
• Commercial Losses
• No institutionalize system for pilferage evaluation and prevention
• Physical Losses
• DMA results are not accurate
• Not all assets are reflected in the

GIS map

• No system for monitoring the

condition of pipelines

• No criteria for renewal of mainlines
• Only 1 leak detection team
• Leak detection is based on DMA results and

sweeping scheme

• Distribution scheme is empirical
• Quarterly pressure monitoring

NRW Challenges

Vision

for MCWD

14.00% 19.00% 24.00% 29.00% 34.00%

15

points

vision O

2 2

15%

27.50 26.13 24.5

26.11 24.96 23.90

Non Revenue Water

2 2O

NRW Action Plan

Physical Losses volume

Pressure Management Active Leakage Control Pipeline & Asset Management Speed & Quality of Repairs

4 Elements of Leakage Management

Addressing Physical Losses

Non Revenue Water

2 2O

NRW Action Plan

Addressing Physical Losses

• Asset Inventory Program / Project
• Institutionalizing a system to ensure that all new assets

are reflected in the GIS map

• Hydraulic model

Non Revenue Water

2 2O

NRW Action Plan

Physical Losses volume

Pressure Management Active Leakage Control Speed & Quality of Repairs Pipeline & Asset Management

Addressing Physical Losses

Non Revenue Water

2 2O

NRW Action Plan

DMA / Hydraulic Area

TALAMBAN SUB-SYSTM CENTRAL SUB- SYSTM COMPOSTLA –CASILI – MACTAN SUB- SYSTM

Decommissioning of mainlines

Addressing Physical Losses LAGTANG – TISA SUB-SYSTM

Non Revenue Water

2 2O

NRW Action Plan

Pipeline Asset Management

• Determine the condition of your assets
• Create a programming system to automatically

monitor the condition of each pipeline

• Mapping of leak location in the GIS map

Pipe I.D

• No. of

Leaks Pipe Size Length Location PV – 000168 10 100 308 Quiot PV – 002127 19 50 569 Guadalupe PV - 001181 26 100 934

• Pob. Cons.

PV - 002034 9 400 375 Lawaan

Addressing Physical Losses

Non Revenue Water

2 2O

NRW Action Plan

Pipeline Asset Management

• Determine when your assets are to be

renewed

History Grade Renewal Criteria

5

more than 5 body leaks per 300 meters in the pipeline; or more than 7 failures per 300 meters

4

4-5 body leaks per 300 meters in the pipeline; or 6-7 failures per 300 meters

3

2-3 body leaks per 300 meters in the pipeline; or 4-5 failures per 300 meters

2

1 body leak per 300 meters in the pipeline; or 2-3 failures per 300 meters

1

zero body leak in the pipeline; 1 failure per 300 meters

MAINLINES FOR RENEWAL

Batch No. Length (Linear meters) 1 3,400 2 1,920 3 7,752 4 4,515 5 4,613 6 5,927 total 28,127

Addressing Physical Losses

Non Revenue Water

2 2O

NRW Action Plan

Physical Losses volume

Pressure Management Speed & Quality of Repairs Pipeline & Asset Management Active Leakage Control

Addressing Physical Losses

Non Revenue Water

2 2O

NRW Action Plan

Active Leakage Control

90%

• f the

physical losses Does not surface to the ground

Leak Detection

Addressing Physical Losses

Non Revenue Water

Addressing Physical Losses

2 2O

NRW Action Plan

Active Leakage Control

O

Equipment Manpower Competency System

Noise Loggers Listening Sticks Clamp meters Leak Detector

LDT Training Facility

Mesh System

4x 3x 2x 1x

Non Revenue Water

2 2O

NRW Action Plan

Physical Losses volume

Pressure Management Pipeline & Asset Management Active Leakage Control Speed & Quality of Repairs

Addressing Physical Losses

Non Revenue Water

2 2O

NRW Action Plan

Physical Losses volume

Pipeline & Asset Management Active Leakage Control Speed & Quality of Repairs Pressure Management

Addressing Physical Losses

Non Revenue Water

2 2O

NRW Action Plan

Pressure Management

• Installation of PRVs on strategic areas.
• Procurement and installation of pressure loggers on strategic

points

• Distribution Scheme shall be based on hydraulic model.

Addressing Physical Losses

• SCADA

Non Revenue Water

Hydrant Withdrawal

• All LGU’s are only allowed to withdraw water on its designated fire

hydrants unless force majeure.

• Such hydrants will be metered and monitored.
• Withdrawal from other hydrants (not designated) will be

considered illegal.

NRW Action Plan

2 2O

Addressing Unbilled Authorized Consumption

Non Revenue Water

• Conduct Random Field Meter Testing on 5% of the total SCs.
• Evaluate large meter size’s consumption rate and replace with

appropriate meter size.

Meter Maintenance

2 2O

NRW Action Plan

Addressing Commercial Losses

Non Revenue Water

• Unbilled Authorized Consumption
• Metered Withdrawal on fire hydrants only on designated areas per LGU
• Commercial Losses
• Random Field Meter Testing on 5% of total no. of SCs
• Large Meter Sizing program
• Physical Losses
• Institutionalization of hydraulic

areas

• Asset Inventory
• Asset condition monitoring
• Mainline Renewal
• Procurement of Advance LD equipments
• Construction of Leak Detection facility
• Mesh System on Leak Detection
• Procurement and Installation of PRVs
• Real Time pressure monitoring
• Hydraulic model

NRW Action Plan

2 2O

Thank you!