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Water treatment in
Washtenaw County.

Washtenaw County's water story is the Huron River. Ann Arbor pulls roughly 85 percent of its supply from the river and runs it through ozone, GAC, and softening before it leaves the plant. PFAS detections upstream in the early 2020s rewired the treatment train, and homeowners in Ann Arbor, Ypsilanti, and the surrounding townships still call asking about it weekly. Whole-home carbon paired with a 5-stage RO is our standard recommendation for Washtenaw addresses.

What is in the water in Washtenaw County

Hardness range

10GPG

Moderately Hard

Primary utility

Ann Arbor Water Treatment Services

Huron River (about 85 percent) and four municipal wells (about 15 percent).

Latest CCR

Flagged contaminants

PFASTTHMs

Per the utility CCR linked above.

Cities we serve in Washtenaw County

1 city.
One county, one phone number.

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