2020 water supply planning report to the minnesota legislature

Information Item: 2020 Water Supply Planning Report to the Minnesota Legislature

Lanya Ross, Environmental Analyst

Metropolitan Council: September 9, 2020

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Groundwater: private wells

Groundwater: municipal wells

Groundwater + Surface water:

municipal wells, intakes

-- Surface water: municipal intakes

Private (domestic) well

Water Supply Planning in the Twin Cities Metro Area is a Collaborative Endeavor • 186 Cities and townships • 100+ Water utilities

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Information Planning Recommendations Advisory

Committees Reports

METROPOLITAN COUNC I L

Minnesota Statutes 473.1565 METROPOLITAN AREA WATER SUPPLY PLANNING ACTIVITIES; ADVISORY COMMITTEES Enacted 2005

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Contents

• Water supply at a glance “To me, the greatest value in this partnered

• Shared principles approach is that documents like the Master Water Supply Plan (2015) are informed by

• Collaboration, technical the real experiences and expertise of the local water suppliers that the public has

investigations, planning, and come to trust for safe and sustainable delivery of drinking water.”

implementation

• Outcomes and future work Mark Maloney, Public Utilities Director, City of Shoreview

• Highlights

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Water Supply at a Glance • 100+ municipal water supply systems • 1,500 square miles designated for source water protection • 10,000+ miles of local water supply distribution pipe • 60,000 private domestic wells + 5,000 private business wells

Metropolitan Council has a unique role as a planning agency, not as regulator or utility

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Collaboration

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Technical Investigations 2005-2020 Collected and analyzed new geologic, water level, and water chemistry information 2009-2017 Developed and updated Metro Model 2020 & 2020 Evaluated of groundwater and surface interaction 2015-2020 Subregional analyses of alternative water supply approaches

“Council funding of studies and projects was important because it isn’t always easy to get local city councils to commit funds to something that reaches beyond their borders.”

Steve Albrecht, Former Burnsville Public Works Director

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WATER SURP.LY P.t!AN

Local Vvater Supply Plan Template Third Generation for 2016-2018 ·-~April 10, JOlJ

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NEW WELLS so+ communities

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DISTRIBUTION 60+ communities

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WATER TREATMENT 35+ communities

Source: 2040 Local water supply plan updates submitted as part of community comprehensive plans. Not all local plan updates have been submitted to the Council; this information will be updated as plans are received.

Planning

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Implementation for Sustainability The Master Water Supply Plan defines water supply sustainability as: • Use of existing water supply infrastructure and investments is maximized • Surface water use is planned and implemented to maintain protected flows • Groundwater used is planned and implemented to:

– Maintain aquifer levels consistent with safe-yield conditions (MN Rules 6115.0630) and/or maintain projected surface water flows and water levels

– Minimize impacts to groundwater flow directions in areas where groundwater contamination has, or may, result in risks to the public health

• Demand that exceeds sustainable groundwater withdrawal rates is supplied by the most feasible combination of efficiency and conservation, surface water, and/or wastewater and stormwater reuse

• Legislative changes are made that align agency directions on all aspects of water supply

• Water users and suppliers recognize uncertainty and seek to minimize risk 9

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Highlight: MnTAP Water Efficiency Intern Program

• Launched in 2012 • Student interns placed in metro area organizations • Between 2013 and 2017 20 projects made 159 recommendations

• As of 2018, the intern recommendations that were implemented save 87 million gallons/year and $486,000/year

• Still going strong!

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Council grants help growing communities use water more efficiently

$500,000 Water Efficiency Grants

4,510 TOT AL DEVICES REPLACED

52 million gaJJons

SAVED ANNUALLY

-1,190 I irrigation controllers

18 n1illion gallons

SAVED ANNUALLY

clothes washers

4 2 million • gallons

SAVED ANNUALLY


Highlight: Water Efficiency Grant Program 2015-2017: • 19 communities established local water efficiency programs

• 52 million gallons of water saved annually

2019-2022: • 40 communities (17 returning)

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aquifer change: - -- - -,

2010 vs. 2040 • pumping

Over 40 feet of rebound

No change

Over 40 feet of decline

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Highlight: Regional Groundwater modeling • Supports regional policy • Many communities use as a starting place for wellhead protection, saving time and money

“Encourage the continued development of a metropolitan groundwater model, as a tool to define aquifers and aquifer recharge areas and as a basis for aquifer protection and management.”

Bloomington 2040 Comprehensive Plan Update

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RS ITY OF M I NNESOTA

Driv en to D iscover'"

Community Leadership for Clean Water


Outcomes 1. Better understanding of shared resources and challenges 2. Successful sub-regional collaborative platform to advance water sustainability goals

3. Better management/long-term resiliency of shared resources 4. More resources focused on regional water supply challenges 5. Better equipped to pursue next steps

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Groundwater - Surface Water - Total

350 -----------------------

~ 300

0 ~ 250 Q) Cl. Cl) C 200 0 ro (9 150 C 0

~ 100

1940s 1950s 1960s 1970s 1980s 1000s 2000s 2010s


Examples of Results Communities participating in subregional water supply work groups: 20 communities in 2005 versus 72 communities in 2002

40 communities receiving grants to establish local water efficiency rebate programs

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Next Step

• Submission of the final report to the Minnesota Legislature as part of Minnesota Water Plan – September 15, 2020

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Questions Lanya Ross

Environmental Analyst 651-602-1803

[email protected]

Ali Elhassan Manager, Water Supply Planning

651-602-1066 [email protected]

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mailto:[email protected]

mailto:[email protected]

2020 water supply planning report to the minnesota legislature

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