The South East Queensland Drought Experience Lessons for Canadian Demand Management Practitioners Kirk Stinchcombe Manager, Operational Policy and Planning.

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Presentation transcript:

The South East Queensland Drought Experience Lessons for Canadian Demand Management Practitioners Kirk Stinchcombe Manager, Operational Policy and Planning Water Stewardship Division Ministry of Environment Province of British Columbia

My Story Joint Canadian/Australian citizen Positions in Australia since 2003 –Demand Management Coordinator, Gold Coast Water –Advisor, Gold Coast Waterfuture Project –Project Manager, SEQ Integrated Urban Water Management Investigation –Project Director, SEQ Home Waterwise Service –Project Director, SEQ Pressure and Leakage Management Project –Advisor, SEQ One-to-One Water Saving Program

Presentation Outline The South East Queensland Drought Four Innovative Drought Response Projects –The Home Waterwise Service –The SEQ Pressure and Leakage Management Project –The One-to-One High Water User Program –The Gold Coast Waterfuture Project Lessons for Canadian Demand Management Practitioners

4000 km

1000 km Brisbane Brisbane Noosa Gold Coast Toowoomba Mixed urban & rural landuse Low topographic relief ~ 50% of Queensland popn

Comprising 12 Local Government Authorities ~ km 2 catchment 1600 km 2 embayment (Moreton Bay) 2.7 Million people – The fastest population growth in Australia Average annual rainfall ~1000mm

NRW QLD 2007 Federation drought breaks Millennium drought continues

Wivenhoe Dam (circa 2000) 100% capacity Full Supply = 1,165,000 ML or 1,165,000 million Liters Capilano + Seymour = 64,000 million Liters Spillway

Spillway Wivenhoe Dam (April 2007) 18% capacity

3 Advanced Water Treatment Plants 1 Desalination Plant Several Bulk Pipelines & 2 New Storages Total asset investment of $9 bill Groundwater Sources The “Supply” Side

The Demand Side Restrictions: Outdoor Watering BanCommunications CampaignBusiness Savings ProgramHome Rebate SchemeHome Retrofit ProgramPressure and Leakage ManagementHeavy Water User Program

The Challenge: Retrofit 200,000 homes with water efficient devices in 2 years

A comprehensive water audit (with CBSM toolkit) 1 new water saving showerhead Water efficient aerators on bathroom and kitchen taps Up to 3 leaking taps fixed All materials supplied and installed $150 in value for $20

135 plumbers involved at program peak 3000 retrofits per week

Full time call centre with 50 staff Comprehensive marketing campaign: print, radio, TV, web… 95% customer satisfaction KPI CBSM design (including the market research!)

228,551 homes by Dec ML savings per year (13 ML per day) $42.1 million investment The Outcome

The Challenge: Save 60 million litres of water per day through pressure and leakage management across the SEQ region

Sectoring the network into District Metering Areas (DMAs)

Pressure Reducing Valve (PRV) Installation

PRV Inlet Pressure Flow Controlled Outlet Pressure As flow increases and decreases the pressure is adjusted accordingly to maintain adequate levels of service during the day At night time when demand is at its minimum pressure can be reduced considerably Flow Modulation Control

Active Leak Detection and Repair

47.8 ML/day saved at Oct ML/day savings by ,020 ML saved since DMAs complete; 322 commenced $70 million expenditure to date Largest project of its kind ever The Outcome

The Challenge: Assist 80,000 “high volume” households (15% of single family homes) using more than 800 litres/household/day to significantly curb their water consumption

Program budget: $8 million Primary delivery mechanism: Mandatory completion of 58 question water use survey Customized water saving plan sent back based on response Radically condensed timeframe (6 months concept to completion)

Indoor Behavioural Outdoor Technological

The Outcome: 92% compliance with survey submission requirements A reduction in water use by this segment of 30.1ML/day 70% of households were using less than 800L/property/day post program 45% of targeted households were efficient (ie. at or below 140L/p/d) post program compared to 7% pre program On a per person basis the HWU consumption reduced by 40% compared to the general population’s reduction of 22% for the same period. Groundbreaking intersection of mass customisation and CBSM

Pimpama Coomera Waterfuture Project

Class A+ Recycled Water Treatment Plant (supply by 2009 to toilet & outdoor) Mandatory rainwater tanks (laundry cold water & outdoor) 3500 dual reticulated homes already built Growing by ~120 homes/month. Home to 120,000 people by 2056

The Situation Today Dam levels currently at 51.14% Restrictions relaxed slightly Residential consumption still well below the new 170 litres/person/day target Supply-side measures coming on-line; some deferred at least temporarily Most demand-side projects scaling back; others continue unabated Major crisis averted… for now

Lessons Our assumptions about water supply security can change very, very quickly When the time comes… be ready (both with data and planning) Steal shamelessly Establish governance systems early Think bigger