Tap Water Results

Is Edwardsville, IL tap water safe?

Data: U.S. EPA · How we read the data · How we check it

Summary

No federal limits exceeded in EPA data for Edwardsville Water System. 1 PFAS were detected below the limits.

4 public water systems serve parts of Edwardsville. The largest, Edwardsville Water System, serves 26,808 people. Your water bill names your system.

Largest system

Edwardsville Water System

26,808 people · Groundwater · EPA ID IL1190250

Buys treated water from Bond/Madison Water Company.

PFASHighest averageLimitStatus
PFOA
Not detected
–4 pptNot detected
PFOS
Not detected
–4 pptNot detected
PFHxS
Not detected
–10 pptNot detected
PFNA
Not detected
–10 pptNot detected
HFPO-DA (GenX)
Not detected
–10 pptNot detected

ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.

Lead: 0 ppb at the 90th percentile (Jun 2026, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0

Across Illinois, 13 of 479 water systems EPA tested had PFAS above a 2024 federal limit, and 18 systems were above the lead action level in results from the last five years. Illinois results.

Edwardsville homes and lead pipes

43%
of homes built before 1980 (Illinois 64%, US 50%)
21%
built before 1950 (Illinois 26%)
33%
of households rent (Illinois 33%)

Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.

Housing: Census American Community Survey 2020–2024 5-year estimates for Edwardsville city (tables B25034, B25003). Estimates for small places have a margin of error.

Which system serves your ZIP code

Based on the ZIP codes each system reported serving. Boundaries don't follow ZIP lines exactly, so your water bill is the final word.

SystemZIP codes in Edwardsville
Edwardsville Water System
26,808 people
62025
Southern Il University-Edwardsville Water System
2,817 people
62026

Other water systems serving Edwardsville

  • Southern Il University-Edwardsville Water System
    2,817 people · Purchased groundwater · Illinois · reported ZIPs here
    No PFAS above limits
  • University Flats MHP
    203 people · Purchased groundwater · Illinois · lists this city
    Not in EPA's PFAS sample
  • Quail Run Mobile Home Park Water System
    168 people · Purchased groundwater · Illinois · lists this city
    Not in EPA's PFAS sample

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Granite City 8 mi
Illinois American Water – Granite City
Illinois American Water – Granite CityNone above limits6 ppb
Alton 12 mi
Illinois American Water – Alton
Illinois American Water – AltonNone above limits3 ppb
O'Fallon 14 mi
O'Fallon Water System
O'Fallon Water SystemNone above limits0 ppb
Belleville 19 mi
Illinois American Water – Homer Township
Illinois American Water – Homer TownshipNone above limits0 ppb
Springfield 71 mi
Springfield Water System
Springfield Water SystemNone above limits0 ppb
Decatur 93 mi
Decatur Water System
Decatur Water SystemNone above limits0 ppb

Questions

Is Edwardsville tap water safe to drink?

Edwardsville Water System has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.

Who supplies water in Edwardsville, IL?

4 public water systems serve parts of Edwardsville. The largest is Edwardsville Water System (26,808 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Edwardsville tap water have PFAS?

Edwardsville Water System had 1 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Edwardsville homes have lead pipes?

Census estimates put 43% of Edwardsville homes as built before 1980 (Illinois: 64%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Edwardsville Water System's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.