Washtenaw County, Michigan Water Systems

Washtenaw County, Michigan

40 community water systems on record — 32 active, 8 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Michigan’s official records. Always confirm current status with Michigan before making decisions based on this information.

Community water systems in Washtenaw County, Michigan

System name	City	Population served	Status
ANDELINA FARMS	BLOOMFIELD HILLS	750	Active
ANN ARBOR	ANN ARBOR	123,851	Active
ANN ARBOR TOWNSHIP	ANN ARBOR	1,338	Active
AUGUSTA TOWNSHIP	WHITTAKER	3,907	Active
AUSTIN COMMONS II	HOWELL	280	Active
BARTON HILLS	ANN ARBOR	450	Active
BROOKSIDE SUBDIVISION	ANN ARBOR	130	Inactive
CASSIDY LAKE S.A.I.	CHELSEA	440	Inactive
CHELSEA	CHELSEA	5,474	Active
CHESTNUT HILLS	BRIGHTON	813	Active
COPPER MEADOWS	ANN ARBOR	128	Active
DEXTER	DEXTER	4,500	Active
ELLSWORTH LAKE HOMEOWNERS ASSOCIATION	MENOMONEE FALLS	88	Inactive
HARBOR COVE APARTMENTS	WHITMORE LAKE	288	Active
JENNINGS-NEWPORT HEIGHTS	ANN ARBOR	38	Inactive
LOCH ALPINE SANITARY AUTHORITY	ANN ARBOR	1,506	Active
MANCHESTER	MANCHESTER	2,150	Active
MILAN	MILAN	7,363	Active
NORTHFIELD ESTATES	OAK BROOK	1,620	Active
NORTHVILLE CROSSING	SOUTHFIELD	1,890	Active
ORCHARD GROVE	FARMINGTON HILLS	725	Active
PITTSFIELD TOWNSHIP	ANN ARBOR	24,500	Active
PLEASANT LAKE PARK LLC	YPSILANTI	60	Active
REGENCY AT WHITMORE LAKE	WHITMORE LAKE	190	Active
RIVER RIDGE - SALINE	SOUTHFIELD	720	Active
SALINE	SALINE	9,158	Active
SALINE MEADOWS M H P	SALINE	225	Inactive
SALINE VALLEY FARMS	ANN ARBOR	375	Active
SCI0 FARMS ESTATES	ANN ARBOR	50	Inactive
SCIO TOWNSHIP	ANN ARBOR	8,500	Active
SISTERS OF MARY, MOTHER OF EUCHARIST	ANN ARBOR	100	Active
ST. LOUIS CENTER	CHELSEA	56	Active
SUPERIOR TOWNSHIP	YPSILANTI	6,830	Active
SYLVAN TOWNSHIP	CHELSEA	263	Active
THORNTON FARMS	MILFORD	1,188	Active
VILLAGE AT EAGLE GARDENS	BRIGHTON	193	Active
WALDEN WOODS SUBDIVISION	ANN ARBOR	20	Inactive
WESTBROOK APARTMENTS	WHITMORE LAKE	330	Active
YPSILANTI COMM UTILITIES AUTH	YPSILANTI	30,000	Inactive
YPSILANTI COMMUNITY UTILITY AUTHORITY	YPSILANTI	53,988	Active