Tap Water Quality Report
Tap water quality in AURORA, Illinois
Tap water in AURORA, Illinois receives a grade of F (53/100) 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.
Recommended filters for AURORA
Filters matched to the specific contaminants in AURORA's water supply.
Reverse Osmosis or NSF P473 certified carbon
$80-$750Activated carbon and RO are the only technologies proven to remove PFAS at certified levels.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
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.