Tap Water Quality Report
Tap water quality in CHAMPAIGN, Illinois
Tap water in CHAMPAIGN, Illinois receives a grade of C (70/100) from TapWaterSafety.org. It's served by IL AMERICAN-CHAMPAIGN. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in CHAMPAIGN's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving CHAMPAIGN.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 28.6 ppb, 477x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 53.5 ppb, 357x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 21.4 ppb, 214x above the EWG health guideline of 0.1 ppb.
Arsenic detected
Moderate concernArsenic detected at 0.5 ppb.
EPA compliance record
Official U.S. EPA records for IL AMERICAN-CHAMPAIGN (system ID IL0195300) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for CHAMPAIGN
Filters matched to the specific contaminants in CHAMPAIGN's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in CHAMPAIGN's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
28.6 ppb | 0.06 | — | — | — | — | — | 477× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
53.5 ppb | 0.15 | 80.0 | 100 | — | — | — | 357× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
21.4 ppb | 0.1 | 60.0 | 60 | — | — | — | 214× over |
| Bromodichloromethane Disinfection byproduct |
8.2 ppb | 0.06 | — | — | — | — | — | 137× over |
| Arsenic Heavy metal |
0.5 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 125× over |
| Chloroform Disinfection byproduct |
42.5 ppb | 0.4 | — | — | — | — | — | 106× over |
| Trichloroacetic acid Disinfection byproduct |
7.52 ppb | 0.1 | — | — | — | — | — | 75× over |
| Dichloroacetic acid Disinfection byproduct |
13.9 ppb | 0.2 | — | — | — | — | — | 70× over |
| Chromium (hexavalent) Heavy metal |
1.03 ppb | 0.02 | — | — | — | — | — | 51× over |
| Dibromochloromethane Disinfection byproduct |
2.79 ppb | 0.1 | — | — | — | — | — | 28× over |
| Radium, combined (-226 and -228) Radiological |
0.76 pCi/L | 0.05 | 5.0 | — | — | — | — | 15× over |
| Chlorate Disinfection byproduct |
274.6 ppb | 210.0 | — | — | — | — | — | 1.3× over |
| Dibromoacetic acid Disinfection byproduct |
0.0111 ppb | 0.03 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
5.65 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
2.43 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Vanadium Other |
0.45 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Chloromethane Other |
0.0333 ppb | 2.69 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.153 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.585 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
9.23 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from IL AMERICAN-CHAMPAIGN.