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Manitowoc County, Wisconsin — public water systems

At a glance

139 active public water systems are filed under Manitowoc County, Wisconsin in EPA's SDWIS records, together reporting 64,022 people served. The largest is Manitowoc Waterworks, which reports serving 34,500 people. 14 are community water systems serving people where they live; the other 125 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

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

Active systems

139

Population served

64K

Community systems

14

Groundwater share

98.6%

How does Manitowoc County compare with other Wisconsin counties?

Manitowoc County has the 38th-most active public water systems among the 90 counties listed for active Wisconsin systems in EPA records; among the 74 with 3 or more systems, the median has 140. Its systems report 64,022 people served in total, the 22nd-largest county figure in the state and 1.2% of the statewide total. The average system here reports serving 461 people, roughly in line with the Wisconsin average of 469. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Manitowoc County's drinking water come from?

By primary water source, Manitowoc County's active systems draw on groundwater (137, 99%) and surface water (2, 1.4%). Overall, 99% rely mainly on groundwater (including purchased groundwater) and 1.4% on surface water, compared with 99% and 0.6% across Wisconsin. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Manitowoc Waterworks, draws primarily on surface water.

What kinds of water systems operate in Manitowoc County?

Manitowoc County's active systems break down as 14 community systems (10%), 23 non-transient non-community systems (17%) and 102 transient non-community systems (73%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (84%), local government (13%), state government (2.2%) and public/private partnership (0.7%).

The 50 largest water systems in Manitowoc County

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Active public water systems in Manitowoc County, Wisconsin
#Water systemCountyPopulation servedTypeSource
1Manitowoc WaterworksManitowoc34,500CommunitySurface water
2Two Rivers WaterworksManitowoc11,270CommunitySurface water
3Kiel WaterworksManitowoc3,932CommunityGroundwater
4Cleveland WaterworksManitowoc1,524CommunityGroundwater
5Mishicot WaterworksManitowoc1,432CommunityGroundwater
6Reedsville WaterworksManitowoc1,200CommunityGroundwater
7Valders WaterworksManitowoc954CommunityGroundwater
8Whitelaw WaterworksManitowoc757CommunityGroundwater
9St Nazianz WaterworksManitowoc705CommunityGroundwater
10City Limits Bar & Banquet HallManitowoc550Transient non-communityGroundwater
11Millhome Supper ClubManitowoc550Transient non-communityGroundwater
12Point Beach Nuclear MainManitowoc550Non-transient non-communityGroundwater
13Maribel WaterworksManitowoc355CommunityGroundwater
14Kellnersville WaterworksManitowoc301CommunityGroundwater
15St Marys SchManitowoc226Non-transient non-communityGroundwater
16Holy Family ConventManitowoc195CommunityGroundwater
17Trinity Lutheran Family CtrManitowoc170Transient non-communityGroundwater
18Stecker Machine Plant 1Manitowoc150Non-transient non-communityGroundwater
19Natural Ovens Bakery Alpha Baking CoManitowoc150Non-transient non-communityGroundwater
20St Johns Lutheran SchManitowoc125Non-transient non-communityGroundwater
21Camp Tapawingo LodgeManitowoc110Transient non-communityGroundwater
22Camp Sinawa Dining HallManitowoc110Transient non-communityGroundwater
23Camp Sinawa DormitoryManitowoc110Transient non-communityGroundwater
24Camp Rokilio Train StationManitowoc110Transient non-communityGroundwater
25Camp Rokilio Viking ShipManitowoc110Transient non-communityGroundwater
26Tavern 10Manitowoc110Transient non-communityGroundwater
27Wi Dnr Pt Beach CmpgdManitowoc100Transient non-communityGroundwater
28Wells Concrete Prod CoManitowoc95Non-transient non-communityGroundwater
29Quiet Country Community AssnManitowoc90CommunityGroundwater
30Stecker Machine Plant 2Manitowoc80Non-transient non-communityGroundwater
31Branch StationManitowoc75Transient non-communityGroundwater
32Wst Fab LLCManitowoc70Non-transient non-communityGroundwater
33B & B Metals OfficeManitowoc62Non-transient non-communityGroundwater
34Camp Tapawingo Wagner Shower BldgManitowoc60Transient non-communityGroundwater
35Rahr Memorial School Frst Main LodgeManitowoc60Transient non-communityGroundwater
36Rahr Memorial School Frst Krejcarek Educ BldgManitowoc60Transient non-communityGroundwater
37Bolles French Creek InnManitowoc50Transient non-communityGroundwater
38SpudzManitowoc50Transient non-communityGroundwater
39Big Apple Pub & GrillManitowoc50Transient non-communityGroundwater
40Samanthas Double Dam BarManitowoc50Transient non-communityGroundwater
41Pack Er InnManitowoc50Transient non-communityGroundwater
42Shell Francis CreekManitowoc50Transient non-communityGroundwater
43Devils River Campers ParkManitowoc50Transient non-communityGroundwater
44Salem Ebenezer Reform ChManitowoc50Transient non-communityGroundwater
45Cr Stop Mini MartManitowoc50Transient non-communityGroundwater
46Shadows BarManitowoc50Transient non-communityGroundwater
47AquamasterManitowoc45Non-transient non-communityGroundwater
48Henning CheeseManitowoc45Non-transient non-communityGroundwater
49Nigrelli Inc.Manitowoc45Non-transient non-communityGroundwater
50Siemers Holstein Farm Inc.Manitowoc42Non-transient non-communityGroundwater

All other water systems in Manitowoc County (89)

The remaining active systems filed under Manitowoc County, largest first, with the population each reports serving.

Manitowoc County water systems: frequently asked questions

How many public water systems are in Manitowoc County, Wisconsin?

EPA's SDWIS records file 139 active public water systems under Manitowoc County, Wisconsin: 14 community systems (10%), 23 non-transient non-community systems (17%) and 102 transient non-community systems (73%).

Who supplies drinking water in Manitowoc County, WI?

The largest community water systems filed under Manitowoc County are Manitowoc Waterworks (34,500 people served), Two Rivers Waterworks (11,270 people served) and Kiel Waterworks (3,932 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Manitowoc County's drinking water come from groundwater or surface water?

Of the 139 active public water systems in Manitowoc County, 99% draw mainly on groundwater and 1.4% on surface water, counting purchased supplies. The largest system, Manitowoc Waterworks, uses surface water.

Where can I find a water quality report for Manitowoc County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 14 community systems are filed under Manitowoc County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Manitowoc County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More Wisconsin water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in Manitowoc County, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/manitowoc (data as of October 1, 2026).