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Evan N. Pratt, P.E.

evanprattWashtenaw County Water Resources Commissioner

'Our mission is to provide for the health, safety and welfare of Washtenaw County citizens and the protection of surface water and the environment and to promote the long term environmental and economic sustainability of Washtenaw County by providing storm water management, flood control, development review and water quality programs.'


Learn about the Services and Responsibilities
of Washtenaw County's Water Resources Commissioner

Annual Report

Michigan Association of County Drain Commissioners Website

Video About County Drains


Water Resources Commissioner

How did we do?

How did we do?

We care about the quality of service the Water Resources Commissioner's Office delivers. If you have had recent contact with us, please let us know how you feel!

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Welcome to the Waste Knot program, HighScope!

Welcome to the Waste Knot program, HighScope!

HighScope Educational Research Foundation of Ypsilanti has been admitted as the newest member of the County's Waste Knot Program! At HighScope, staff goes above and beyond to practice the "3-Rs - Reduce, Reuse, Recycle" for as many materials as possible, from the office areas all the way to the kitchen, creating a waste-conscious culture. Keep up the great work, and we look forward to working with you! Learn more at

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Evan Pratt's Interview in Pipeline Magazine

Evan Pratt's Interview in Pipeline Magazine

Pipeline, a publication of the Michigan Association of County Drain Commissioner, Vol 25, No 2, Summer 2016, includes an interview with Evan Pratt and his thoughts and roles on the Governor's 21st Century Infrastructure Commission

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Office of the Water Resources Commissioner

705 N. Zeeb Rd.  P.O. Box 8645
Ann Arbor, MI 48107-8645
Phone: 734-222-6860
Fax: 734-222-6803
Office Hours 8:30am-5pm, M-F
Staff Directory

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Environmental Excellence Program

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Environmental Excellence Partnership Program- We launched the E2P2 program to assist businesses and non-profit organizations in recognizing, developing and implementing environmentally sound behavior in the areas of water quality protection, waste reduction & recycling and pollution prevention. Opportunities for participation include:

  1. Community Partners for Clean Streams
  2. Pollution Prevention
  3. Waste Knot

Learn more on our E2P2 website.

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