Tap Water Quality Report
Tap water quality in BERWYN, Illinois
Tap water in BERWYN, Illinois receives a grade of D (69/100) from TapWaterSafety.org. It's served by BERWYN. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Bromodichloromethane significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in BERWYN's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving BERWYN.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 19.2 ppb, 319x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 29.7 ppb, 198x above the EWG health guideline of 0.15 ppb.
Bromodichloromethane significantly above health guideline
Moderate concernBromodichloromethane detected at 9.46 ppb, 158x above the EWG health guideline of 0.06 ppb.
EPA compliance record
Official U.S. EPA records for BERWYN (system ID IL0310210) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Stage 2 Disinfectants and Disinfection Byproducts Rule | Missed testing or reporting | 04/01/2025 | Open |
| Consumer Confidence Rule | Other (e.g. public notice) | 07/01/2025 | Open |
| Lead and Copper Rule | Missed testing or reporting | 01/01/2026 | Open |
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 BERWYN
Filters matched to the specific contaminants in BERWYN'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.
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 BERWYN'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 |
19.2 ppb | 0.06 | — | — | — | — | — | 319× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
29.7 ppb | 0.15 | 80.0 | 100 | — | — | — | 198× over |
| Bromodichloromethane Disinfection byproduct |
9.46 ppb | 0.06 | — | — | — | — | — | 158× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
15.0 ppb | 0.1 | 60.0 | 60 | — | — | — | 150× over |
| Trichloroacetic acid Disinfection byproduct |
5.98 ppb | 0.1 | — | — | — | — | — | 60× over |
| Dibromochloromethane Disinfection byproduct |
5.38 ppb | 0.1 | — | — | — | — | — | 54× over |
| Dibromoacetic acid Disinfection byproduct |
1.19 ppb | 0.03 | — | — | — | — | — | 40× over |
| Chloroform Disinfection byproduct |
14.8 ppb | 0.4 | — | — | — | — | — | 37× over |
| Dichloroacetic acid Disinfection byproduct |
7.43 ppb | 0.2 | — | — | — | — | — | 37× over |
| Radium, combined (-226 and -228)* Radiological |
0.89 pCi/L | 0.05 | 5.0 | — | — | — | — | 18× over |
| Chromium (hexavalent) Heavy metal |
0.206 ppb | 0.02 | — | — | — | — | — | 10× over |
| Nitrate* Inorganic |
0.297 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.1× over |
| Nitrate and nitrite* Inorganic |
0.297 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.1× over |
| Barium* Heavy metal |
19.7 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum Other |
0.938 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.263 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.221 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.324 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.146 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.119 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| 4-Androstene-3,17-dione* Other |
0.175 ppt | — | — | — | — | — | — | Below guideline |
| Fluoride* Inorganic |
0.66 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Testosterone* Other |
0.025 ppt | — | — | — | — | — | — | 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 BERWYN.