St. Clair County, Michigan — public water systems

96 active public water systems serve St. Clair County, reporting 130.8K people served.

Dataset updated July 2026 . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

Population served

130.8K

Community systems

Groundwater share

83.3%

Water systems in St. Clair County

Active public water systems in St. Clair County, Michigan
#	Water system	County	Population served	Type	Source
1	Port Huron, City of	St. Clair	33,800	Community	Surface water
2	Fort Gratiot Township	St. Clair	11,616	Community	Purchased surface water
3	Port Huron Township	St. Clair	10,654	Community	Purchased surface water
4	Marysville, City of	St. Clair	9,959	Community	Surface water
5	Clay Township	St. Clair	9,866	Community	Purchased surface water
6	Ira Township	St. Clair	6,510	Community	Surface water
7	St. Clair Water and Sewer Authority	St. Clair	5,847	Community	Surface water
8	St. Clair, City of	St. Clair	5,485	Community	Surface water
9	Kimball Township	St. Clair	5,170	Community	Purchased surface water
10	Marine City	St. Clair	4,652	Community	Surface water
11	Algonac, City of	St. Clair	4,110	Community	Surface water
12	St. Clair Township	St. Clair	3,270	Community	Purchased surface water
13	Cottrellville Township	St. Clair	3,200	Community	Purchased surface water
14	Burtchville Township	St. Clair	2,900	Community	Purchased surface water
15	Clyde Township	St. Clair	2,400	Community	Purchased surface water
16	Yale, City of	St. Clair	1,900	Community	Groundwater
17	Capac, Village of	St. Clair	1,775	Community	Groundwater
18	Memphis, City of	St. Clair	1,084	Community	Groundwater
19	Thousand Trails Campground	St. Clair	904	Transient non-community	Groundwater
20	Love'S Travel Center - St Clair	St. Clair	500	Non-transient non-community	Groundwater
21	St. Paul'S Lutheran Church - Casco	St. Clair	306	Transient non-community	Groundwater
22	John Farrell Elementary	St. Clair	300	Non-transient non-community	Groundwater
23	Sunrise Conv Store #29	St. Clair	300	Transient non-community	Groundwater
24	The Old Club	St. Clair	200	Transient non-community	Surface water
25	Avoca Elementary School	St. Clair	200	Non-transient non-community	Groundwater
26	Camp Hawthorn Hollow	St. Clair	150	Transient non-community	Groundwater
27	Columbus Bible Church	St. Clair	150	Transient non-community	Groundwater
28	Perch Point Conservation Club	St. Clair	130	Transient non-community	Groundwater
29	Goodells Co Park - North	St. Clair	120	Transient non-community	Groundwater
30	Sunrise MHP	St. Clair	120	Community	Groundwater
31	Solitude Links Golf	St. Clair	100	Transient non-community	Groundwater
32	Emmett Koa	St. Clair	100	Transient non-community	Groundwater
33	Dorsey House	St. Clair	100	Transient non-community	Groundwater
34	Golden Hawk Golf Course	St. Clair	100	Transient non-community	Groundwater
35	Holly Meadows Golf Course	St. Clair	100	Transient non-community	Groundwater
36	Camp Hawthorne Hollow Hand Pump	St. Clair	100	Transient non-community	Groundwater
37	Wadhams Oil	St. Clair	100	Transient non-community	Groundwater
38	St. John the Evangelist	St. Clair	100	Transient non-community	Groundwater
39	Goodells Park - East	St. Clair	100	Transient non-community	Groundwater
40	Goodells Co Park - Svc & Media	St. Clair	100	Transient non-community	Groundwater
41	Goodells Co Park - Artesian Well	St. Clair	100	Transient non-community	Groundwater
42	Dunrentin Heights Subdivision	St. Clair	81	Community	Groundwater
43	Brockway Township Hall	St. Clair	80	Transient non-community	Groundwater
44	Pine River Nature Center	St. Clair	75	Transient non-community	Groundwater
45	Scooters Pub	St. Clair	65	Transient non-community	Groundwater
46	Gleason-Butler-Sharpe Vfw	St. Clair	60	Transient non-community	Groundwater
47	Life in Christ Church	St. Clair	50	Transient non-community	Groundwater
48	Pitstop Mobil	St. Clair	50	Transient non-community	Groundwater
49	Smiths Creek American Legion	St. Clair	50	Transient non-community	Groundwater
50	Ruby Campground	St. Clair	50	Transient non-community	Groundwater