1 / 12

DEMAND MANAGEMENT Customer Metering – the Samoa Experience

DEMAND MANAGEMENT Customer Metering – the Samoa Experience . Apia Urban Supply 1995 – 2002. SAMOA ISLANDS. Volcanic – 2 main islands Rainfall 2100-7000mm (wet period) Population – 175,000 (2001 Census). SAMOA WATER AUTHORITY. Corporatized 1994 Move towards financial independence

yvon
Download Presentation

DEMAND MANAGEMENT Customer Metering – the Samoa Experience

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. DEMAND MANAGEMENT Customer Metering – the Samoa Experience Apia Urban Supply 1995 – 2002

  2. SAMOA ISLANDS • Volcanic – 2 main islands • Rainfall 2100-7000mm (wet period) • Population – 175,000 (2001 Census)

  3. SAMOA WATER AUTHORITY • Corporatized 1994 • Move towards financial independence • Water Supply – 82% popn (17000 customers) • Treatment Plants – 3 • Raw Water systems • Boreholes • O & M Expenditure • $7 m/yr • Community schemes – approx 15% • No water supply – less than 5% popn. • ISP, EU projects

  4. Scope of Case Study • Apia Urban Area • 1995 – limited metering • 1999 – A.W.S.C.P • Full scale metering program • About 4000 meters

  5. Background - APIA URBAN AREA • Pop = approx 38,000 • Incomes = $2400 - $80,000 / annum • Central Business District • Excessive demands • Approx – 900 l/c/d (pre-metering 1999) • Water is free, from God, plentiful • Treated and Raw supply (80% mixed in 1999) • Low pressures, demand exceed production treated • Inaccurate maps

  6. DEMAND MANAGEMENT INITIATIVES • No Formal Demand Management Strategy • Metering and Tariff • Treated supply • Progressive $0.12/m3/d - $1.40/m3/d • Leak Detection • Improving Operation & Maintenance

  7. HOW TO METER APIA ? • Isolate areas to be supplied by treated water • Network modifications – valves, re-route pipes • Meter target area • Extend area – when demand reduction allows • Continue until 100% coverage

  8. METERING PROCESS • Step 1 – Isolate Target Area • Treated and sufficient quantity • Step 2 – Awareness & Acceptance • Media campaign • Village groups consultations • Matai consultation (advisory committee) • Disconnect supply • Step 3 – Installation & Billing • Pre-fabrication at workshop • 3 month grace period • Monthly reading • Counselling & assistance

  9. RESULTS & LESSONS LEARNT • Reduction of Demand • Approx 350l/c/d (2002) • Extend Treated water coverage to 80% • Community Awareness of metering • Consultation using traditional hierarchy (matai) • Above-ground meters

  10. FURTHER ACTIONS • Demand Management Strategy • UFW – theft, illegal connections • System Performance – data • Asset Mgt Strategy • O&M improvements • Leak Detection • Disaster (Drought) mgt • Mapping • New Tariff Structure (proposal) • O&M simple cost recovery • 2 bands rather than logarithmic • 5 year + review • ‘free’ portion – 0.5m3/d • Billing Process • Time and labour intensive • Review of Progress • Customer survey • Metering records - consumption • Extension of treated water supply

  11. CHALLENGES IN DEMAND MANAGEMENT FOR SWA • Influx of 3500 initially (total 6000) meters – EURWSP • Doubling of system assets – EURWSP • New Computerised Asset Management System • Successful implementation of new Tariff Structure (awaiting Cabinet approval) and impact on consumption • Translating results of progress review into actions for improvement • Limited local Technical expertise (only 5 engineers in SWA)

  12. Thank you

More Related