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Marshall County, Indiana — public water systems

At a glance

87 active public water systems are filed under Marshall County, Indiana in EPA's SDWIS records, together reporting 38,447 people served. The largest is Plymouth Water Department, which reports serving 10,241 people. 12 are community water systems serving people where they live; the other 75 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

87

Population served

38.4K

Community systems

12

Groundwater share

100%

How does Marshall County compare with other Indiana counties?

Marshall County has the 11th-most active public water systems among the 109 counties listed for active Indiana systems in EPA records; among the 92 with 3 or more systems, the median has 26. Its systems report 38,447 people served in total, the 33rd-largest county figure in the state and 0.7% of the statewide total. The average system here reports serving 442 people, well below the Indiana average of 1,456. 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 Marshall County's drinking water come from?

By primary water source, Marshall County's active systems draw on groundwater (87, 100%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 97% and 2.8% across Indiana. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Plymouth Water Department, draws primarily on groundwater.

What kinds of water systems operate in Marshall County?

Marshall County's active systems break down as 12 community systems (14%), 10 non-transient non-community systems (11%) and 65 transient non-community systems (75%). 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 (91%), local government (8%) and federal government (1.1%).

The 50 largest water systems in Marshall County

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Active public water systems in Marshall County, Indiana
#Water systemCountyPopulation servedTypeSource
1Plymouth Water DepartmentMarshall10,241CommunityGroundwater
2Bremen Water DepartmentMarshall4,516CommunityGroundwater
3Jellystone Park #1Marshall2,410Transient non-communityGroundwater
4Culver Educational FoundationMarshall1,940CommunityGroundwater
5Bourbon Water DepartmentMarshall1,767CommunityGroundwater
6Argos Municipal Water PlantMarshall1,680CommunityGroundwater
7Arbys Restaurant & Convenient Store 6375Marshall1,667Transient non-communityGroundwater
8Culver Water DepartmentMarshall1,391CommunityGroundwater
9Pla-Mor Campground, Inc..Marshall1,250Transient non-communityGroundwater
10Speedway Super America #8310Marshall1,000Transient non-communityGroundwater
11Pilot Travel Center #198Marshall820Transient non-communityGroundwater
12Culver Educational Foundation/WoodcraftMarshall800Transient non-communityGroundwater
13Swan Lake Golf Resort- Motel/ConferenceMarshall745Non-transient non-communityGroundwater
14Plymouth Wesleyan ChurchMarshall707Non-transient non-communityGroundwater
15Ancilla Domini (Convent)Marshall680CommunityGroundwater
16Laville Elementary SchoolMarshall650Non-transient non-communityGroundwater
17Mcdonalds Restaurant #12348 (La Paz)Marshall350Transient non-communityGroundwater
18The Wooded KnotMarshall299Transient non-communityGroundwater
19Pretty Lake Golf ClubMarshall280Non-transient non-communityGroundwater
20Dollar General Store #10756Marshall240Transient non-communityGroundwater
21Woodbury Golf Course - ClubhouseMarshall207Transient non-communityGroundwater
22Gatewood EstatesMarshall202CommunityGroundwater
23Ruperts Resort LakefrontMarshall200Transient non-communityGroundwater
24Ruperts Resort CampgroundMarshall200Transient non-communityGroundwater
25Swan Lake Golf Resort - Pro ShopMarshall200Transient non-communityGroundwater
26Cornerstone Community FellowshipMarshall200Transient non-communityGroundwater
27Sandy Ridge Mennonite ChurchMarshall175Transient non-communityGroundwater
28Bremen Missionary ChurchMarshall143Transient non-communityGroundwater
29Shiloh Wesleyan ChurchMarshall139Transient non-communityGroundwater
30La Paz DinerMarshall110Transient non-communityGroundwater
31Biddle Point InnMarshall102Transient non-communityGroundwater
32Grace Outreach Fellowship - NewMarshall100Transient non-communityGroundwater
33House of PrayerMarshall100Transient non-communityGroundwater
34Potawatomi Park PavillionMarshall99Transient non-communityGroundwater
35Argos Church of Jesus ChristMarshall99Transient non-communityGroundwater
36Plymouth Kingdom HallMarshall99Transient non-communityGroundwater
37Walnut ChurchMarshall91Transient non-communityGroundwater
38Pretty Lake Umc (Fellowship Hall)Marshall90Transient non-communityGroundwater
39Plymouth Community ChurchMarshall90Transient non-communityGroundwater
40House of the LordMarshall89Non-transient non-communityGroundwater
41Pretty View Condominium Owners AssocMarshall85CommunityGroundwater
42Immanuel Lutheran ChurchMarshall85Transient non-communityGroundwater
43Bremen Church of GodMarshall83Transient non-communityGroundwater
44Riverview Community ChurchMarshall80Transient non-communityGroundwater
45Dutchmaid Eatery & GiftsMarshall80Transient non-communityGroundwater
46Blissville Community ChurchMarshall74Transient non-communityGroundwater
47Creekside Manor MHPMarshall73CommunityGroundwater
48Church of Jesus Christ Latter Day SaintsMarshall70Transient non-communityGroundwater
49The Country ChurchMarshall66Transient non-communityGroundwater
50Swan Lake Golf Resort - Golf AcademyMarshall65Transient non-communityGroundwater

All other water systems in Marshall County (37)

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

Marshall County water systems: frequently asked questions

How many public water systems are in Marshall County, Indiana?

EPA's SDWIS records file 87 active public water systems under Marshall County, Indiana: 12 community systems (14%), 10 non-transient non-community systems (11%) and 65 transient non-community systems (75%).

Who supplies drinking water in Marshall County, IN?

The largest community water systems filed under Marshall County are Plymouth Water Department (10,241 people served), Bremen Water Department (4,516 people served) and Culver Educational Foundation (1,940 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 Marshall County's drinking water come from groundwater or surface water?

Of the 87 active public water systems in Marshall County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Plymouth Water Department, uses groundwater.

Where can I find a water quality report for Marshall 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. 12 community systems are filed under Marshall 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 Marshall 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 Indiana 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 Marshall County, Indiana”, https://aquacensus.com/water-systems/indiana/marshall (data as of October 1, 2026).