County · Illinois

McLean County, Illinois: drinking water records

Name: Drinking water records for McLean County, Illinois
Creator: U.S. Environmental Protection Agency
License: https://www.usa.gov/government-works

Explore EPA records for 36 community water systems across 24 ZIP codes in McLean County, then find water-testing resources and available recent monitoring-station readings.

In focus36Community water systems

Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

Drinking-water records

EPA survey and compliance records are historical reports. UCMR 5 results are available for 4 of the 36 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

systems in EPA's PFAS survey

systems where PFAS was found

systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses

systems that have reached the lead action level

systems with a health-based violation since 2016

System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.

Water systems in this county

All 36 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.

Water system	People served	PFAS survey results	PFAS found	Health-based violations	Lead, 9 in 10 homes at or below
Le Roy IL1130750	3,498	60	0	4	49 ppbat or above the action level
Bloomington IL1130200	77,610	120	1	0	5.1 ppbbelow the action level
Normal IL1130900	52,736	60	0	0	5.5 ppbbelow the action level
Illinois State University-Normal IL1135510	6,600	60	0	0	0 ppbbelow the action level
Lexington IL1130800	1,930	0	0	1	0 ppbbelow the action level
Chenoa IL1130300	1,785	0	0	8	3 ppbbelow the action level
Gridley IL1130600	1,411	0	0	1	0 ppbbelow the action level
Hilltop MHP IL1130080	1,360	0	0	1	0 ppbbelow the action level
North Meadow Village MHP IL1130060	495	0	0	1	1.2 ppbbelow the action level
BLM Gw MHP, LLC IL1130210	390	0	0	1	0 ppbbelow the action level
Meadows of Bloomington MHP IL1135785	343	0	0	1	0 ppbbelow the action level
Spin Lake Homeowners Association, INC. IL1135140	200	0	0	1	0 ppbbelow the action level
Colonial Meadows Water Company IL1135100	193	0	0	5	7 ppbbelow the action level
Cooksville IL1130400	157	0	0	6	1 ppbbelow the action level
Meadows Mennonite Home IL1135689	140	0	0	1	9 ppbbelow the action level
Cropsey Mutual Water Association IL1135150	65	0	0	2	3 ppbbelow the action level
Country Lane MHP IL1135385	50	0	0	1	0 ppbbelow the action level
Heyworth IL1130650	2,853	0	0	0	1.5 ppbbelow the action level
Hudson IL1130700	1,847	0	0	0	7.5 ppbbelow the action level
Bloomington Township Pwd West Phase IL1130040	1,800	0	0	0	8.5 ppbbelow the action level
Downs IL1130500	1,201	0	0	0	0 ppbbelow the action level
Danvers IL1130450	1,089	0	0	0	1.7 ppbbelow the action level
Colfax IL1130350	989	0	0	0	10.7 ppbbelow the action level
Bloomington Township Pwd-Crestwicke IL1135120	900	0	0	0	0 ppbbelow the action level
Mclean IL1130850	791	0	0	0	0 ppbbelow the action level
Saybrook IL1130950	679	0	0	0	5.1 ppbbelow the action level
Stanford IL1131000	600	0	0	0	1.3 ppbbelow the action level
Carlock IL1130250	562	0	0	0	0 ppbbelow the action level
Towanda IL1131050	480	0	0	0	0 ppbbelow the action level
Bellflower IL1130150	343	0	0	0	0 ppbbelow the action level
Arrowsmith IL1130100	315	0	0	0	0 ppbbelow the action level
Willow Creek North MHP IL1135130	250	0	0	0	0 ppbbelow the action level
Ellsworth IL1130550	225	0	0	0	1.7 ppbbelow the action level
Indian Creek Homeowners and Water Assn. IL1135250	210	0	0	0	8.8 ppbbelow the action level
Anchor IL1130050	160	0	0	0	13.5 ppbbelow the action level
Westwind Estates IL1135265	120	0	0	0	0 ppbbelow the action level

Shaded rows report lead at or above the 15 ppb action level in their latest monitoring period. EPA sets that level for the value 9 in 10 sampled homes fall at or below; reaching it requires the utility to act, and it is not a measurement of any single tap. One system in this table is at or above it. What an action level means

USGS · Monitoring stations

The water, more recently.

Available station readings in McLean County, Illinois. Each measurement keeps its time, unit and original source.

These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.

Recent observations load when this section comes into view.

How these readings update

We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.

Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.

Your next step

Water testing, reports & local help.

Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.

Official national directories

Water testing

Find your state’s private-well program

EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-05

Water testing

Find a certified drinking-water laboratory

Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-11

Public records

Find your utility’s Consumer Confidence Report

EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-09-09

Public records

Explore USGS water observations

Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.

U.S. Geological Survey
Source reviewed 2026-09-15

A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.

Understand water testing and laboratory reports

Resource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction

Explore your area

Local coverage in McLean County

24ZIP areas in this overview

Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.

Towns and communities

Anchor
Arrowsmith
Bellflower
Bloomington
Chenoa
Colfax
Cooksville
Danvers
Downs
Ellsworth
Gridley
Heyworth
Hudson
Le Roy
Lexington
McLean
Normal
Saybrook
Shirley
Stanford
Towanda

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

61701Bloomington
61704Bloomington
61705Bloomington
61720Anchor
61722Arrowsmith
61724Bellflower
61726Chenoa
61728Colfax
61730Cooksville
61731
61732Danvers
61736Downs
61737Ellsworth
61744Gridley
61745Heyworth
61748Hudson
61752Le Roy
61753Lexington
61754McLean
61761Normal
61770Saybrook
61772Shirley
61774Stanford
61776Towanda

These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.

Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.

Beyond this county page

Keep reading. Compare nearby.

PFASChoosing a PFAS filterPFAS was found in 1 of the 4 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter16 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near McLean County

All Illinois counties

Sources and scope

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.

Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.