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Jay County, Indiana — public water systems

At a glance

30 active public water systems are filed under Jay County, Indiana in EPA's SDWIS records, together reporting 13,183 people served. The largest is Portland Municipal Water Plant, which reports serving 6,209 people. 4 are community water systems serving people where they live; the other 26 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

30

Population served

13.2K

Community systems

4

Groundwater share

100%

How does Jay County compare with other Indiana counties?

Jay County has the 44th-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 13,183 people served in total, the 76th-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 439 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 Jay County's drinking water come from?

By primary water source, Jay County's active systems draw on groundwater (30, 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, Portland Municipal Water Plant, draws primarily on groundwater.

What kinds of water systems operate in Jay County?

Jay County's active systems break down as 4 community systems (13%), 11 non-transient non-community systems (37%) and 15 transient non-community systems (50%). 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 (83%) and local government (17%).

Water systems in Jay County

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Active public water systems in Jay County, Indiana
#Water systemCountyPopulation servedTypeSource
1Portland Municipal Water PlantJay6,209CommunityGroundwater
2Dunkirk Water DepartmentJay2,305CommunityGroundwater
3Redkey Water PlantJay1,323CommunityGroundwater
4Pennville Water CompanyJay706CommunityGroundwater
5Holy Trinity ChurchJay400Transient non-communityGroundwater
6Bloomfield Elementary SchoolJay300Non-transient non-communityGroundwater
7Fellowship Baptist ChurchJay294Non-transient non-communityGroundwater
8Paradise Pointe Campground (West Well)Jay140Transient non-communityGroundwater
9Paradise Pointe Campground (East Well)Jay140Transient non-communityGroundwater
10Portland ForgeJay137Non-transient non-communityGroundwater
11Premier Ethanol Dba Poet BiorefiningJay130Non-transient non-communityGroundwater
12Pak A Sak #85Jay101Transient non-communityGroundwater
13Union Chapel ChurchJay100Transient non-communityGroundwater
14Bryant Wesleyan ChurchJay100Transient non-communityGroundwater
15New Beginnings Holiness ChurchJay99Transient non-communityGroundwater
16The Church at WestchesterJay84Transient non-communityGroundwater
17The Waters of DunkirkJay75Non-transient non-communityGroundwater
18Hoosier Pride Farms, LLC-Well #4Jay70Non-transient non-communityGroundwater
19J Star FarmsJay60Non-transient non-communityGroundwater
20Jinnys CafeJay55Transient non-communityGroundwater
21Fairview Umc/Praises & Pathways DaycareJay50Non-transient non-communityGroundwater
22Jay Creek Amish SchoolJay50Transient non-communityGroundwater
23Limberlost Amish SchoolJay45Transient non-communityGroundwater
24Bearcreek Parochial Amish SchoolJay35Transient non-communityGroundwater
25Jay Co. Scout Facility Inc..Jay35Transient non-communityGroundwater
26Minnich - LimberlostJay30Non-transient non-communityGroundwater
27Minnich - AmpleJay30Non-transient non-communityGroundwater
28Minnich - MidlandJay30Non-transient non-communityGroundwater
29Bryant ParkJay25Transient non-communityGroundwater
30Loblolly Church Amish SchoolJay25Transient non-communityGroundwater

Jay County water systems: frequently asked questions

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

EPA's SDWIS records file 30 active public water systems under Jay County, Indiana: 4 community systems (13%), 11 non-transient non-community systems (37%) and 15 transient non-community systems (50%).

Who supplies drinking water in Jay County, IN?

The largest community water systems filed under Jay County are Portland Municipal Water Plant (6,209 people served), Dunkirk Water Department (2,305 people served) and Redkey Water Plant (1,323 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 Jay County's drinking water come from groundwater or surface water?

Of the 30 active public water systems in Jay County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Portland Municipal Water Plant, uses groundwater.

Where can I find a water quality report for Jay 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. 4 community systems are filed under Jay 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 Jay 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 Jay County, Indiana”, https://aquacensus.com/water-systems/indiana/jay (data as of October 1, 2026).