County · Illinois

Sangamon County, Illinois: drinking water records

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

Explore EPA records for 42 community water systems across 26 ZIP codes in Sangamon County, then find water-testing resources and available recent monitoring-station readings.

In focus42Community 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 7 of the 42 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 42 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
Springfield IL1671200	117,444	120	1	0	0 ppbbelow the action level
Chatham IL1670300	16,423	60	0	0	0 ppbbelow the action level
Curran-Gardner Township Pwd IL1675350	6,651	60	0	0	0 ppbbelow the action level
Williamsville IL1671300	6,198	120	0	0	0 ppbbelow the action level
Auburn IL1670050	4,574	120	0	0	2.7 ppbbelow the action level
Riverton IL1670950	4,279	60	0	0	2 ppbbelow the action level
Rochester IL1671000	3,856	120	0	0	5.6 ppbbelow the action level
New Berlin IL1670800	1,380	0	0	1	0 ppbbelow the action level
Illiopolis IL1670550	1,037	0	0	4	4.2 ppbbelow the action level
Ej Water-Sangchris IL1670230	1,025	0	0	4	0 ppbbelow the action level
Park Ridge MHC IL1670110	116	0	0	1	0 ppbbelow the action level
Edgewood Mobile Home Court (MHC) IL1670140	92	0	0	1	0 ppbbelow the action level
Pawnee IL1670850	2,700	0	0	0	4.6 ppbbelow the action level
Dawson IL1670400	2,375	0	0	0	0 ppbbelow the action level
Jerome IL1670600	1,600	0	0	0	0 ppbbelow the action level
Pleasant Plains IL1670900	1,508	0	0	0	5.4 ppbbelow the action level
Grandview IL1670500	1,405	0	0	0	0 ppbbelow the action level
Mechanicsburg-Buffalo Water Commission IL1675150	1,170	0	0	0	0 ppbbelow the action level
Divernon IL1670450	1,100	0	0	0	0 ppbbelow the action level
Grand Valley Village MHP IL1670070	912	0	0	0	0 ppbbelow the action level
Round Prairie Water Coop IL1670090	813	0	0	0	1.5 ppbbelow the action level
Loami IL1670700	812	0	0	0	1.5 ppbbelow the action level
Sugar Crk Pwd IL1675300	754	0	0	0	0 ppbbelow the action level
Thayer IL1671250	721	0	0	0	0 ppbbelow the action level
Woodland Acres MHP IL1675185	464	0	0	0	2 ppbbelow the action level
Oakwood Estates IL1670060	420	0	0	0	0 ppbbelow the action level
Cottonwood Cove MHP IL1670200	358	0	0	0	0 ppbbelow the action level
Forrest Park MHP IL1670225	352	0	0	0	0 ppbbelow the action level
Pheasant Run MHP IL1670250	350	0	0	0	0 ppbbelow the action level
Bissell Village MHC IL1670120	220	0	0	0	0 ppbbelow the action level
Northbrook MHC IL1670130	220	0	0	0	0 ppbbelow the action level
Deerwood Estates IL1670240	176	0	0	0	0 ppbbelow the action level
Milton Manor MHP IL1670170	154	0	0	0	0 ppbbelow the action level
Westwood Place IL1670210	152	0	0	0	0 ppbbelow the action level
South Sangamon Water Commission IL1670080	134	0	0	0	0 ppbbelow the action level
Ridge Village MHP IL1670160	120	0	0	0	0 ppbbelow the action level
Gaslite Court MHC IL1670220	114	0	0	0	0 ppbbelow the action level
Linden Manor MHP IL1670180	84	0	0	0	0 ppbbelow the action level
Patch Place MHC IL1670100	47	0	0	0	0 ppbbelow the action level
Westwood IL1670190	44	0	0	0	0 ppbbelow the action level
United Regional Water Coop IL1670260	43	0	0	0	0 ppbbelow the action level
Scottsdale MHC IL1671210	114	0	0	0	not reported

USGS · Monitoring stations

The water, more recently.

Available station readings in Sangamon 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 Sangamon County

26ZIP 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

Auburn
Buffalo
Cantrall
Chatham
Curran
Dawson
Divernon
Illiopolis
Loami
Mechanicsburg
Pawnee
Pleasant Plains
Riverton
Rochester
Sherman
Springfield
Thayer
Williamsville

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

62515Buffalo
62520Dawson
62530Divernon
62536Chatham
62539Illiopolis
62545Mechanicsburg
62558Pawnee
62561Riverton
62563Rochester
62615Auburn
62625Cantrall
62629Chatham
62661Loami
62670Curran
62677Pleasant Plains
62684Sherman
62689Thayer
62693Williamsville
62701Springfield
62702Springfield
62703Springfield
62704Springfield
62706Springfield
62707Springfield
62711Springfield
62712Springfield

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 7 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter13 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 Sangamon 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.