Marathon County, Wisconsin — public water systems

195 active public water systems serve Marathon County, reporting 103.5K people served.

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

Active systems

195

Population served

103.5K

Community systems

Groundwater share

100%

Water systems in Marathon County

Active public water systems in Marathon County, Wisconsin
#	Water system	County	Population served	Type	Source
1	Wausau Waterworks	Marathon	39,994	Community	Groundwater
2	Weston Municipal Utilities	Marathon	16,000	Community	Groundwater
3	Kronenwetter Water & Sewer Utility	Marathon	6,931	Community	Groundwater
4	Rib Mountain Water Utility	Marathon	6,398	Community	Groundwater
5	Mosinee Waterworks	Marathon	3,406	Community	Groundwater
6	Rothschild Waterworks	Marathon	3,190	Community	Groundwater
7	Abbotsford Waterworks	Marathon	2,502	Community	Groundwater
8	Schofield Waterworks	Marathon	2,205	Community	Groundwater
9	Spencer Waterworks	Marathon	1,848	Community	Groundwater
10	Colby Waterworks	Marathon	1,829	Community	Groundwater
11	Marathon City Waterworks	Marathon	1,695	Community	Groundwater
12	Stratford Waterworks	Marathon	1,643	Community	Groundwater
13	Edgar Waterworks	Marathon	1,491	Community	Groundwater
14	Mosinee East System	Marathon	1,046	Community	Groundwater
15	Athens Waterworks	Marathon	1,025	Community	Groundwater
16	Holy Family Catholic Church	Marathon	800	Transient non-community	Groundwater
17	Riverside Elementary School	Marathon	590	Non-transient non-community	Groundwater
18	Hatley Waterworks	Marathon	550	Community	Groundwater
19	Land O Lakes Inc. Cheese Div	Marathon	350	Non-transient non-community	Groundwater
20	New Hope Community Church	Marathon	300	Transient non-community	Groundwater
21	St Ladislaus	Marathon	300	Transient non-community	Groundwater
22	Maine Water Utility	Marathon	271	Community	Groundwater
23	Maine Elementary School	Marathon	255	Non-transient non-community	Groundwater
24	Stoney Acres	Marathon	254	Transient non-community	Groundwater
25	Ntc Ag Center	Marathon	225	Non-transient non-community	Groundwater
26	St Thomas Catholic Church	Marathon	225	Transient non-community	Groundwater
27	Mullins Cheese Factory	Marathon	200	Non-transient non-community	Groundwater
28	Red Granite Bar	Marathon	175	Transient non-community	Groundwater
29	St. John Lutheran School	Marathon	151	Non-transient non-community	Groundwater
30	Maizefield Mhc (Manufactured Home Community)	Marathon	145	Community	Groundwater
31	Bethany Lutheran Church	Marathon	140	Transient non-community	Groundwater
32	Boardwalk Mhc LLC	Marathon	130	Community	Groundwater
33	Belvedere Supper Club	Marathon	125	Transient non-community	Groundwater
34	Deer Trail Village	Marathon	120	Community	Groundwater
35	Knowlton House Distillery	Marathon	120	Transient non-community	Groundwater
36	Ntc Vet Tech Lab	Marathon	115	Non-transient non-community	Groundwater
37	Obrien Steel	Marathon	108	Non-transient non-community	Groundwater
38	Mullins Cheese Retail Store	Marathon	106	Transient non-community	Groundwater
39	G S A Camp Del O Claire	Marathon	100	Transient non-community	Groundwater
40	Lake Dubay Shores	Marathon	100	Transient non-community	Groundwater
41	Trails End Lodge	Marathon	100	Transient non-community	Groundwater
42	Maple Grove Charter School	Marathon	100	Non-transient non-community	Groundwater
43	Pine Valley Golf Course	Marathon	100	Transient non-community	Groundwater
44	Mission Evangelical	Marathon	100	Transient non-community	Groundwater
45	Steve & Dianes Memories Ballroom	Marathon	100	Transient non-community	Groundwater
46	Trappe River Golf Club	Marathon	100	Transient non-community	Groundwater
47	Veritas Steel 2	Marathon	89	Non-transient non-community	Groundwater
48	Veritas Steel 1	Marathon	89	Non-transient non-community	Groundwater
49	Wild Steer Diner	Marathon	80	Transient non-community	Groundwater
50	Red Retriever Bar & Grill	Marathon	80	Transient non-community	Groundwater