Urban Water Conservation Workshop Rafael Maestu, Carlos Mejia, Eric - - PowerPoint PPT Presentation

Urban Water Conservation Workshop

Rafael Maestu, Carlos Mejia, Eric Oppenheimer

December 17, 2014 Los Angeles, Ca

Water Conservation Emergency Regulation Timeline

Drought Declaration January 17, 2014 Drought Executive Order April 25, 2014 Initial Water Board Survey May-June 2014 Board Adopts Emergency Regulation July 15, 2014 OAL Approves Emergency Regulation July 28, 2014 Water Production Reporting Begins August 15, 2014 Per Capita Water Use Reporting Begins October 15, 2014 Emergency Regulation set to Expire April 24, 2015

Small Water Supplier Actions

• Informal Assessment of 10 Small Water

Suppliers (representing approx. 50,000 People)

– 40% provide a way to report water waste – 60% provide educational materials Action % Implementing as Mandatory Restriction on # days outdoor irrigation is allowed 20%* Restriction on hours of the day that

• utdoor irrigation is allowed

10% Prohibited uses consistent with emergency regulation 50% Hospitality restrictions 10% *only one supplier (10%) limits outdoor irrigation to 2 days per week

Large Supplier Restrictions on Outdoor Irrigation

4 4 4 3 1 1 8 1 2 3 4 5 6 7 8 1 2 3 3.5 4 6 7 # of Suppliers Days per Week Allowed

Days per Week Outdoor Irrigation is Allowed (Suppliers serving 200,000 or more)

Based on a sample of 25 largest water suppliers collectively serving ≈ 14.7 million people

Information Needs

• Where and when is water being used?
• Who is conserving?
• What conservation actions are in place?
• What is working?
• How is water being used (indoor/outdoor)
• What is the potential for water conservation?

Approach for data collection

• Frequent data collection and reporting

– Monthly web based reporting

• Large water suppliers (>3000 connections)
• Simple/Measure critical few
• Informal Follow up with phone interviews

Metrics

• Water Production
• Residential Water
• Population Served
• Percentage Reduction (calculated)
• R-GPCD
• Mandatory restrictions
• Additional data?

South Coast

South Coast 56% San Francisco Bay 13% Sacramento River 9% Tulare Lake 7% San Joaquin River 5% Colorado River 3% South Lahontan 3% Central Coast 3% North Coast 1% North Lahontan >1%

• 173 Retail Urban Water Suppliers
• 20 million Californians represented
• 56% of urban water in State

Mandatory Restrictions on Outdoor Water Use

• 91% now implementing mandatory restrictions

270 291 332 369 362 118 116 77 39 38

70% 71% 81% 90% 91%

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

50 100 150 200 250 300 350 400 450

June July August September October

Water Suppliers Implementing Mandatory Restrictions

Mandatory Restrictions No Mandatory Restrictions Compliance Rate

Mandatory Restrictions on Outdoor Water Use - South Coast

• 90% now implementing mandatory restrictions

124 127 143 158 155

48 51 34 19 18

72% 71% 81% 89% 90%

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 20 40 60 80 100 120 140 160 180 200

June July August September October South Coast Water Suppliers Implementing Mandatory Restrictions

Mandatory Restrictions No Mandatory Restrictions Compliance Rate

Statewide Water Conservation Results

≈ 90 Billion Gallons Saved June – October

218,350 242,425 240,392 215,446 188,249 208,823 224,262 212,724 193,268 175,582

140,000 160,000 180,000 200,000 220,000 240,000 June July August September October

Water Production June-October (Million Gallons)

2013 2014

South Coast Water Conservation Results

≈ 21 Billion Gallons Saved June – October

109,484 118,049 117,782 113,035 98,787

109,629 116,088 108,519 104,519 97,384 80,000 90,000 100,000 110,000 120,000 130,000 June July August September October

South Coast Water Production June-October (Million Gallons)

2013 2014

1.4% 15.5% 18.6% 6.2% 9.9% 5.2% 0.2% 15.5% 22.0%

• 6.3%
• 10.0%
• 5.0%

0.0% 5.0% 10.0% 15.0% 20.0% 25.0%

• 20,000

40,000 60,000 80,000 100,000 120,000

October Water Production by Hydrologic Region and Percentage Reduction (Million Gallons)

Production Oct 2013 Production Oct 2014 Percentage Oct Reduction State Average Oct Reduction 6.7%

Water Conservation Trend

4.3% 7.6% 11.6% 10.3% 6.7% Jun-14 Jul-14 Aug-14 Sep-14 Oct-14

Water Production Percentage Reduction (compared to previous year)

8.9% 13.0% 15.0% 13.3% 12.6% 4.3% 7.6% 11.6% 10.3% 6.7%

• 0.2%

1.7% 7.9% 7.5% 1.4%

JUN-14 JUL-14 AUG-14 SEP-14 OCT-14

Water Production Percentage Reduction (compared to previous year)

All but South Coast Statewide South Coast

October 2014 Residential Gallons per Capita per Day

• Highest R-GPCD figures > 500
• Lowest R-GPCD figures < 50
• Average October 2014 R-GPCD = 109, down

from 117 last year

• 55 GPCD is the performance standard for

indoor use

71.2 77.5 85.9 107.1 134.5 135.8 138.6 154.5 179.6 211.4

22.0% 15.5% 15.5% 1.4% 9.9% 18.6% 0.2% 6.2%

• 10.6%

5.2%

• 15.0%
• 10.0%
• 5.0%

0.0% 5.0% 10.0% 15.0% 20.0% 25.0% 0.0 50.0 100.0 150.0 200.0 250.0

October 2014 Water Conservation Results R-GPCD

October 2014 Average R-GPCD October 2014-2013 % Reduction

520 455 354 305 279 265 245 225 217 213 206 201 200

• 4.20%
• 13.20%
• 11.30%

1.96%

• 9.50%
• 3.20%

1.28% 4.43%

• 33.50%

6.82%

• 0.70%

2.12%

• 1.10%

4.15%

• 4.80%
• 2.00%

8.91% 12.55%

• 1.40%

1.57%

• 8.50%
• 40.00%
• 30.00%
• 20.00%
• 10.00%

0.00% 10.00% 20.00%

• 100

200 300 400 500 600

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October 2014 Water Conservation Results

October GPCD October % Reduction

• 15.00%
• 10.00%
• 5.00%

0.00% 5.00% 10.00% 15.00% 20.00% 25.00%

• 100

200 300 400 500

Workshop Questions

1. What more should be done at the local and/or State level in the near-term to increase water conservation? 2. What additional conservation requirements, if any, should the State Water Board consider adopting if dry conditions persist into the new year? 3. What can be done to compel poorer performing areas to increase conservation? 4. What additional data should the State Water Board be collecting and how would it be used? 5. Others/ Ideas for incentivizing permeant conservation enhancements