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Peoria County, Illinois — public water systems

At a glance

66 active public water systems are filed under Peoria County, Illinois in EPA's SDWIS records, together reporting 188,545 people served. The largest is Il American-Peoria, which reports serving 137,575 people. 21 are community water systems serving people where they live; the other 45 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

66

Population served

188.5K

Community systems

21

Groundwater share

90.9%

How does Peoria County compare with other Illinois counties?

Peoria County has the 15th-most active public water systems among the 149 counties listed for active Illinois systems in EPA records; among the 104 with 3 or more systems, the median has 18. Its systems report 188,545 people served in total, the 11th-largest county figure in the state and 1.5% of the statewide total. The average system here reports serving 2,857 people, about 11% below the Illinois average of 3,204. 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 Peoria County's drinking water come from?

By primary water source, Peoria County's active systems draw on groundwater (52, 79%), purchased groundwater (8, 12%), purchased surface water (4, 6.1%) and surface water (2, 3%). Overall, 91% rely mainly on groundwater (including purchased groundwater) and 9.1% on surface water, compared with 82% and 18% across Illinois. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Il American-Peoria, draws primarily on surface water.

What kinds of water systems operate in Peoria County?

Peoria County's active systems break down as 21 community systems (32%), 10 non-transient non-community systems (15%) and 35 transient non-community systems (53%). 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 (73%), local government (20%), public/private partnership (6.1%) and state government (1.5%).

The 50 largest water systems in Peoria County

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Active public water systems in Peoria County, Illinois
#Water systemCountyPopulation servedTypeSource
1Il American-PeoriaPeoria137,575CommunitySurface water
2Osf St Francis HospitalPeoria10,000Non-transient non-communityPurchased surface water
3ChillicothePeoria6,660CommunityGroundwater
4Peoria HeightsPeoria5,908CommunityGroundwater
5Pleasant Valley PWDPeoria3,783CommunityGroundwater
6Cat MossvillePeoria3,000Non-transient non-communityGroundwater
7T-L Rural Water DistrictPeoria2,243CommunityPurchased groundwater
8ElmwoodPeoria2,058CommunityGroundwater
9Limestone-Walters PWDPeoria2,023CommunityPurchased groundwater
10PrincevillePeoria1,901CommunityGroundwater
11DunlapPeoria1,603CommunityPurchased surface water
12Cat Tech CenterPeoria1,442Non-transient non-communityGroundwater
13Hanna CityPeoria1,253CommunityPurchased groundwater
14Il American-GlasfordPeoria1,193CommunityGroundwater
15BrimfieldPeoria856CommunityGroundwater
16Keystone Steel and WirePeoria700Non-transient non-communityGroundwater
17Cat Mapleton /MapletonPeoria600Non-transient non-communitySurface water
18Freedom Oil Company (136945)Peoria400Transient non-communityGroundwater
19Christ OrchardPeoria400Transient non-communityGroundwater
20Deluxe Lake Estates MHPPeoria325CommunityPurchased groundwater
21MapletonPeoria261CommunityPurchased groundwater
22Kingston MinesPeoria259CommunityPurchased groundwater
23Olive and Oak - Wedding and EventsPeoria250Transient non-communityGroundwater
24Fox Creek Farms Water CompanyPeoria203CommunityGroundwater
25Country Club BbqPeoria200Transient non-communityGroundwater
26Radnor Rod and Gun ClubPeoria200Transient non-communityGroundwater
27Fawn Hills SubdivisionPeoria183CommunityGroundwater
28Mossville United Methodist ChuPeoria160Transient non-communityGroundwater
29Midwest Sports ComplexPeoria150Transient non-communityGroundwater
30Camp WokandaPeoria150Transient non-communityGroundwater
31Evonik CorporationPeoria150Non-transient non-communityGroundwater
32Top of the Hill FarmPeoria150Transient non-communityGroundwater
33Farmington Sportsmens ClubPeoria150Transient non-communityGroundwater
34Cathys Cue and BrewPeoria150Transient non-communityGroundwater
35St Marys School Bored WellPeoria140Non-transient non-communityGroundwater
36Edelstein Water CoopPeoria113CommunityGroundwater
37Chillicothe Sportsmens ClubPeoria100Transient non-communityGroundwater
38Jubilee St Pk #1 Quail MeadowsPeoria100Transient non-communityGroundwater
39Ice Guys Water KioskPeoria100Transient non-communityPurchased surface water
40Jubilee CafePeoria100Transient non-communityGroundwater
41One More at Oak HillPeoria100Transient non-communityGroundwater
42Hitching PostPeoria100Transient non-communityGroundwater
43Kickabrew Coffee CoPeoria100Transient non-communityGroundwater
44Chillicothe Rec Area Camp #2Peoria82Transient non-communityGroundwater
45Jubilee Water Company, Inc..Peoria72CommunityGroundwater
46Korean Presbyterian ChurchPeoria70Transient non-communityGroundwater
47Brimfield Evangelical Free ChurchPeoria70Transient non-communityGroundwater
48Santa Fe Estates Water AssociationPeoria68CommunityGroundwater
49Berea Baptist ChurchPeoria60Transient non-communityGroundwater
50Edwards TapPeoria50Transient non-communityGroundwater

All other water systems in Peoria County (16)

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

Peoria County water systems: frequently asked questions

How many public water systems are in Peoria County, Illinois?

EPA's SDWIS records file 66 active public water systems under Peoria County, Illinois: 21 community systems (32%), 10 non-transient non-community systems (15%) and 35 transient non-community systems (53%).

Who supplies drinking water in Peoria County, IL?

The largest community water systems filed under Peoria County are Il American-Peoria (137,575 people served), Chillicothe (6,660 people served) and Peoria Heights (5,908 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 Peoria County's drinking water come from groundwater or surface water?

Of the 66 active public water systems in Peoria County, 91% draw mainly on groundwater and 9.1% on surface water, counting purchased supplies. The largest system, Il American-Peoria, uses surface water.

Where can I find a water quality report for Peoria 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. 21 community systems are filed under Peoria 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 Peoria 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 Illinois 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 Peoria County, Illinois”, https://aquacensus.com/water-systems/illinois/peoria (data as of October 1, 2026).