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Washington State Department of Health Division of Environmental HealthOffice of Drinking Water Mike Dexel Water Resources Policy Lead Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

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Washington State Department of Health Division of Environmental HealthOffice of Drinking Water. Mike Dexel Water Resources Policy Lead. Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage. Mission. - PowerPoint PPT Presentation

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Page 1: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

Mike DexelWater Resources

Policy Lead

Municipal Water Law and Water Use Efficiency Rule

Redefining Distribution System Leakage

Page 2: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

2Public Health - Always Working for a Safer and Healthier Washington

Mission

To protect the health of the people of

Washington Stateby ensuring safe

and reliabledrinking water.

Page 3: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

3Public Health - Always Working for a Safer and Healthier Washington

The Municipal Water Law (MWL)

In 2003 the state legislature creates law to address growing water needs

Complex water law reform

Water systems can use “inchoate water” for growth within service area

Required Department of Health to adopt rules for efficient use of water

Page 4: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

4Public Health - Always Working for a Safer and Healthier Washington

MWL Implications

Effect on planning program With water system plan approval:

Gain additional connections Expand service area

Result in fewer small water systems Consistency between water system

and local government planning

Page 5: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

5Public Health - Always Working for a Safer and Healthier Washington

Water Use Efficiency Rule

Involved stakeholder input (Subcommittee Report)

Effective Date: January 22, 2007

Only applies to municipal water suppliers Water systems with 15 or more residential

service connections Approximately 2,300 water systems statewide

Page 6: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

6Public Health - Always Working for a Safer and Healthier Washington

Achievements During First Yearof Implementation (2007)

Getting Started – WUE Guidebook

Over 30 training events statewide

Statewide Public Forum Schedule Post goal setting

meeting notice on DOH Web

Page 7: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

7Public Health - Always Working for a Safer and Healthier Washington

What are the Water Efficiency Requirements?

Planning

Set customer goals to use water efficiently in a public forum

Annual performance report

Meter installation

Leakage standard

Page 8: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

8Public Health - Always Working for a Safer and Healthier Washington

Planning Requirements

Forecast water demand based on implementation of WUE program

Implement measures or evaluate for cost effectiveness

Evaluate rates, reclaimed water opportunities

Implement customer measures (such as toilet rebates) to reach goal

Page 9: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

9Public Health - Always Working for a Safer and Healthier Washington

Goal Setting Requirement

Establish a goal with: Measurable water savings Timeframe to achieve the goal

Specific to each water system

Use a public process to establish goal

Designed to enhance the efficient use of water by the water system customers

Page 10: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

10Public Health - Always Working for a Safer and Healthier Washington

Annual Performance Report

Must include: Annual production Leakage (volume and percentage) Progress made in achieving goals Progress made installing meters

Page 11: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

11Public Health - Always Working for a Safer and Healthier Washington

Source and Service Meters

Source meters required now

Service meters required within 10 years (January 22, 2017)

Meters must be calibrated, replaced, and maintained for accuracy

Page 12: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

12Public Health - Always Working for a Safer and Healthier Washington

Rationale for Meters

Authorizing statute, “…(leakage) limit in terms of percentage…of total water supplied”

Provide quantitative data

Most accurate way to calculate leakage “If you can’t measure it, you can’t

manage it”

Page 13: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

13Public Health - Always Working for a Safer and Healthier Washington

Number of Leaks

Page 14: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

14Public Health - Always Working for a Safer and Healthier Washington

Volume of Water

Page 15: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

15Public Health - Always Working for a Safer and Healthier Washington

The Leakage Standard

Only applies to distribution system

10% for most water systems

Follows general principles of International Water Association methodology

Importance of volume

Page 16: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

16Public Health - Always Working for a Safer and Healthier Washington

Redefining Unaccounted for Water (UAFW)

Leakage is not “UAFW” Never standardized Defined differently All water is accounted for

To understand water loss use: Distribution system leakage Authorized consumption

Page 17: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

17Public Health - Always Working for a Safer and Healthier Washington

Leakage Includes

Actual leaks Theft Meter inaccuracies Meter reading errors Data collection errors Calculation errors Water main breaks

Page 18: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

18Public Health - Always Working for a Safer and Healthier Washington

Authorized Consumption Includes

Sales to customers

Maintenance flushing

Fire fighting

Cleaning of tanks or reservoirs

Street cleaning

Unmetered uses MUST BE tracked and estimated

Page 19: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

19Public Health - Always Working for a Safer and Healthier Washington

The Leakage Formula

Percent DSL = [(TP – AC) / (TP)] x 100

Where DSL = % of distribution system leakage

TP = total water produced and purchased

AC = authorized consumption

Page 20: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

20Public Health - Always Working for a Safer and Healthier Washington

What About Volume?

Percentage is not the whole story Leakage fluctuates with population,

water efficiency savings

Reducing water loss is the goal, often better told through volume

Page 21: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

21Public Health - Always Working for a Safer and Healthier Washington

Alternative Methodology

Must be a “Better Evaluation” Must be approved by the state Must be published Must have numerical standards so

compliance can be determined

Page 22: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

22Public Health - Always Working for a Safer and Healthier Washington

Compliance With Leakage Standard

Four ways to be in compliance: 10% or less Numerical standard for the alternative

methodology Develop and implement a water loss

control action plan 20% or less for 500 connections or

less

Page 23: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

23Public Health - Always Working for a Safer and Healthier Washington

What is a Water Loss Control Action Plan?

Documented effort to reduce leakage by implementing water loss control methods

Timeframe for achieving the leakage standard

Budget to fund the plan Technical or economical concerns

that prevent compliance

Page 24: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

24Public Health - Always Working for a Safer and Healthier Washington

Higher Leakage Requires Greater Efforts to Reduce Leaks

Assess data accuracy and collection methods (11-19%)

Implement field activities (20-29%)

Implement distribution system leakage control methods (above 30%)

Page 25: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

25Public Health - Always Working for a Safer and Healthier Washington

How Do I Reduce Leaks?

Conduct water audit; leak detection survey

Repair leaky storage tanks

Calibrate or replace meters

Pressure management

Install acoustic leak detection loggers

Page 26: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

26Public Health - Always Working for a Safer and Healthier Washington

Why Should I Reduce Leaks?

Regulatory compliance Make a business case for reducing

leaks Save operating costs Loss of revenue Save on energy bills What is the price of fixing a leak after

the damage is done?

Page 27: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

27Public Health - Always Working for a Safer and Healthier Washington

Why Should I Reduce Leaks? (cont.)

Protect public health, prevent contamination during pressure loss

Demonstrate stewardship of the resource to public/customers

Page 28: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

28Public Health - Always Working for a Safer and Healthier Washington

Where are Those Leaks?

Majority annual volume of leaks occur on customer service piping

Filter backwash at treatment plant Tank overflows Meter inaccuracies Unmetered facilities (parks, city hall) Data transfer, math errors Old infrastructure

Page 29: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

29Public Health - Always Working for a Safer and Healthier Washington

Take Home Messages

If you can’t authorize it, consider it leakage

Do not use “unaccounted for” water to describe water loss

If you can’t measure it, you can’t manage it

Page 30: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

30Public Health - Always Working for a Safer and Healthier Washington

For More Information

Mike [email protected]

http://www.doh.wa.gov/ehp/dw/ programs/wue.htm

Page 31: Municipal Water Law and Water Use Efficiency Rule Redefining Distribution System Leakage

Washington State Department of Health Division of Environmental Health Office of Drinking Water

31Public Health - Always Working for a Safer and Healthier Washington

Questions?