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Water Treatment Plant UV Disinfection System Project Public Meeting
Start Date: 4/8/2019Start Time: 6:00 PM
End Date: 4/8/2019End Time: 7:00 PM
Event Description:

The City of Ann Arbor Water Treatment staff will hold a public hearing on the proposed water treatment plant ultraviolet (UV) light disinfection system project for the purpose of receiving comments from interested persons. The hearing will be 6–7 p.m. Monday, April 8, 2019, at the City of Ann Arbor Water Treatment Plant, 919 Sunset Road, Ann Arbor.

The purpose of the proposed project is to install an additional disinfection barrier at the Ann Arbor drinking water treatment plant to assist with meeting new regulations for the treatment of cryptosporidium. Cryptosporidium is a microscopic waterborne parasite that can be found in stormwater runoff, agricultural runoff, failed septic systems or sewage overflows. The city’s current treatment processes, including ozone disinfection and filtration, are effective at removing cryptosporidium, but new regulations require additional treatment.

Project construction will involve installation of a new UV water disinfection system inside the existing water treatment plant building. Project components include UV equipment, pipes, valves, electrical and instrumentation equipment. The project will use existing water treatment plant facilities to minimize cost and maximize operational efficiency. 

Impacts from the proposed project may include intermittent deliveries or construction-related traffic in the vicinity of the City of Ann Arbor Water Treatment Plant site during daytime hours July 2019 through August 2020. All work activities related to this project will be conducted within the site limits of the City of Ann Arbor Water Treatment Plant.

Applicable written comments received before the hearing record is closed, at 7 p.m. on Monday, April 8, 2019, will receive responses in the final project plan. Written comments can be sent via email to   />

Location Information:
City Buildings - Water Treatment Plant  (View Map)
919 Sunset Road
Ann Arbor, MI 48103
Phone: 734.794.6426

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All persons are encouraged to participate in public meetings. Accommodations, including sign language interpreters, may be arranged by contacting the City Clerk's office at 734.794.6140; via email to:; or by written request addressed and mailed or delivered to:

City Clerk's Office
301 E. Huron St.
Ann Arbor, MI 48104

Requests made with less than two business days notice may not be able to be accommodated.