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Sep 01, 2022 46 likes •228 views

A New Resource: Recycled Water Jason M Hatch Washington Water Trust Center for Environmental Law and Policy Seattle, WA December 5, 2019 Photo: Bothell-Kenmore Reporter Overview Washington Water Trust Water Supply in Washington State

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Jason M Hatch Washington Water Trust Center for Environmental Law and Policy Seattle, WA December 5, 2019

Photo: Bothell-Kenmore Reporter

A New Resource: Recycled Water

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 Washington Water Trust  Water Supply in Washington State  Recycled Water  Reclaimed Water Law  Sammamish Recycled Water Project

Overview

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 Nonprofit Organization  Improve and protect stream flows

throughout Washington.

 Develop water mitigation programs  Voluntary, cooperative, market based

strategies

Washington Water Trust

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 Chinook  Chum  Coho  Sockeye  Steelhead  Bull Trout

Water-Flow and Fish

16 Fish Critical Basins in WA

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Traditional Strategies

✓ Source substitution ✓ Changing point of diversion ✓ Water conservation (efficiencies) ✓ Water banking ✓ Water Lease/Purchase

New Strategies ✓ New Crop Rotations ✓ New Supply

Rainwater
Off Channel Storage
Stormwater
Public Water
Recycled Water
Natural System Storage

Flow Restoration Strategies

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Water Supply-Needs

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Water Use-Washington State

Water Use in Washington, 2015 (USGS) Estimated Freshwater Withdrawals in Washington, 2010 (USGS)

Freshwater Withdrawals Washington Irrigation Western WA: 127 mgd. GW: 66%/SW: 34% Eastern WA: 3,020 mgd. GW:24%/SW: 76%

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Water Supply

 Water Rights Available? Over-

appropriation

 Out of stream and instream needs  Climate change  Limiting our water source options

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2015: 24 BASINS 2019: 27 BASINS 2016: DROUGHT

Water Supply-Dry Year

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Recycled Water-Established Use

Reclaimed or recycled water is wastewater that is highly treated and tested to a standard for specific uses.

Singapore ✓ Since 1965, has used recycled water for industrial

purposes. 2003, recycled water for drinking supply (40%
f current supply).

http://www.globalwaterforum.org/2018/01/15/newater-in-singapore/

California ✓ Pure Water San Diego-by 2035, supply 1/3 of Drinking Water (currently 85% imported water)

https://www.sandiego.gov/public-utilities/sustainability/pure-water-sd

✓ Monterey One-serves recycled water to more than 90%

f Salinas Valley irrigation. A new facility Pure Water

Monterey will treat wastewater, stormwater, and food processing water, for irrigation and drinking water.

https://purewatermonterey.org/about-us/

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WASHINGTON

 Groundwater Recharge: LOTT (Lacey,

Olympia, Tumwater, Thurston County) recycled water treatment facilities.

 Irrigation: King County Recycled Water-

60 Acres Park, Willows Run Golf Course

 Flow Restoration: Squaxin Island Tribe

Project-Goldsborough Creek. Redirect discharge to Oakland Bay, groundwater recharge.

Recycled Water-Washington State

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Water-Reclaimed Water Rule

RECLAIMED WATER WAC 173-219-390 Specific use-based requirements.

Beneficial Use Reclaimed Water Class Requirements Land Application or Irrigation1 (5) Landscape irrigation with direct or indirect public access. Class A (7) Irrigation of food crops (unless otherwise specified). Class A (13) Irrigation of trees, fodder, fiber, or seed crops in pastures accessed by milking animals. Class A

EPA Guidelines-State Rules

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Barriers

 Location of Recycled Water Facilities  Distribution Network  Perception of Plenty  Public Perception of Recycled Water

Water-Recycled Water Barriers and Potential

Potential

 Existing Widespread Use Globally  Perception of Plenty is a seasonal illusion  Public Perception of Recycled Water can

change

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Brightwater Treatment Plant 12 mgd of Class A recycled water

Source: King County Recycled Water

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Project: Irrigation Alternative = Flow Restoration

Water Quality: Treated water, delivered to irrigators, not Puget Sound Water Quantity: Low Flow in Sammamish River drops to 30-40 cfs Fish: Chinook, Sockeye, Steelhead, Coho, Kokanoee, Cutthroat, Bull Trout Opportunity: 5-8 cfs of conversion to recycled water

Photo: experienceredmond.com

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Project (2019-2021)

✓ Develop pilot site to grow food crops using recycled water in

Sammamish Valley

✓ Engage the food supply chain-producers, consumers,

restauranteurs, grocers

✓ Identify and address concerns ✓ Test water, soil and produce quality-share results ✓ Identify potential demand and viability of RW as irrigation

source Partners Washington Water Trust, Washington State University, King County Recycled Water Potential Approximate 750 acres (450 Landscape, 300 Food) in Sammamish Valley

Project: Sammamish Recycled Water Project

“A select blue ribbon panel of scientists in California conducted an extensive risk-based assessment of the state’s regulations for irrigation of food crops (Cooper et al., 2012). This review concluded that the current regulations were adequately protective of public health…”

Agricultural Use of Recycled Water Impediments and Incentives, WATER RESEARCH FOUNDATION 2019.

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“There is nothing new about reusing water. The Earth is a closed water system: We can’t make water; nor can we destroy it. We’re drinking the same water the dinosaurs did. Cities and farmers across the West are now discovering that what they previously considered wastewater has incredible value.”-Robert Glennon is a professor at the University of Arizona College of

Law and author of “Unquenchable: America’s Water Crisis and What to Do About It.” Source: https://www.latimes.com/opinion/op-ed/la-oe-glennon-water-sewage-recycling- los-angeles-20190305-story.html

Recycled Water

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Jason M Hatch Senior Project Manager jason@washingtonwatertrust.org 1500 Westlake Ave N Suite 202 Seattle, WA 98109 206.675.1585 www.washingtonwatertrust.org