Tap Water Quality Report
Tap water quality in AURORA, Illinois
Tap water in AURORA, Illinois receives a grade of F (55/100) from TapWaterSafety.org. It's served by AURORA. The most significant water quality concerns are: PFAS contamination; 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 AURORA's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving AURORA.
PFAS contamination
Severe concernPerfluorooctanoic acid (PFOA), Perfluorooctane sulfonate (PFOS) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 21.0 ppb, 350x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 40.4 ppb, 269x above the EWG health guideline of 0.15 ppb.
Bromodichloromethane significantly above health guideline
Moderate concernBromodichloromethane detected at 9.82 ppb, 164x above the EWG health guideline of 0.06 ppb.
EPA compliance record
Official U.S. EPA records for AURORA (system ID IL0894070) 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 AURORA
Filters matched to the specific contaminants in AURORA's water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
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 AURORA'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 |
21.0 ppb | 0.06 | — | — | — | — | — | 350× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
40.4 ppb | 0.15 | 80.0 | 100 | — | — | — | 269× over |
| Bromodichloromethane Disinfection byproduct |
9.82 ppb | 0.06 | — | — | — | — | — | 164× over |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.147 ppt | 0.001 | 10.0 | — | — | — | — | 147× over |
| Chromium (hexavalent) Heavy metal |
2.55 ppb | 0.02 | — | — | — | — | — | 128× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
11.1 ppb | 0.1 | 60.0 | 60 | — | — | — | 111× over |
| Dibromochloromethane Disinfection byproduct |
9.0 ppb | 0.1 | — | — | — | — | — | 90× over |
| Dibromoacetic acid Disinfection byproduct |
2.35 ppb | 0.03 | — | — | — | — | — | 78× over |
| Chloroform Disinfection byproduct |
18.7 ppb | 0.4 | — | — | — | — | — | 47× over |
| Trichloroacetic acid Disinfection byproduct |
3.04 ppb | 0.1 | — | — | — | — | — | 30× over |
| Dichloroacetic acid Disinfection byproduct |
5.6 ppb | 0.2 | — | — | — | — | — | 28× over |
| Radium, combined (-226 and -228) Radiological |
1.02 pCi/L | 0.05 | 5.0 | — | — | — | — | 20× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.929 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 10× over |
| Nitrate and nitrite Inorganic |
1.1 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 7.9× over |
| Nitrate Inorganic |
1.07 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 7.6× over |
| Bromoform Disinfection byproduct |
2.87 ppb | 0.5 | — | — | — | — | — | 5.7× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.382 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 1.3× over |
| Chlorate Disinfection byproduct |
164.1 ppb | 210.0 | — | — | — | — | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.118 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Molybdenum Other |
1.99 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.8 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
11.1 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
4.37 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
2.95 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
2.5 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.118 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
2.45 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.333 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
0.124 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
2.4 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Cyanide Inorganic |
2.43 ppb | — | 200.0 | 50 | 70 | 150 | — | Below guideline |
| Fluoride Inorganic |
0.65 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
5.6 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 AURORA.