What was found in ZIP 60403
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Copper | 1784 µg/L 137% of the EPA limit, at the 95th percentile of samples — 1300 µg/L Main supplier: CREST HILL · 21,169 people · 2018 | 1/1 | SYR4 |
| Nitrate | 1310 µg/L 13% of the EPA limit 10000 µg/L Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 1129 µg/L 11% of the EPA limit 10000 µg/L Main supplier: CREST HILL · 21,169 people · 2016 | 1/1 | SYR4 |
| Fluoride | 1097 µg/L 27% of the EPA limit 4000 µg/L Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Barium | 142.75 µg/L 7.1% of the EPA limit 2000 µg/L Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| TTHM | 54.99 µg/L 69% of the EPA limit 80 µg/L Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Chloroform | 42.325 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Nitrite | 39 µg/L 3.9% of the EPA limit 1000 µg/L Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Lithium | 34.8 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2023 | 1/1 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 15.1575 µg/L 25% of the EPA limit 60 µg/L Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 13.19 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 8.8345 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 8.2935 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 7.4755 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Chromium | 7.1905 µg/L 7.2% of the EPA limit 100 µg/L Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Lead | 6.23 µg/L 42% of the EPA limit 15 µg/L Main supplier: CREST HILL · 21,169 people · 2018 | 1/1 | SYR4 |
| Cyanide | 5 µg/L 2.5% of the EPA limit 200 µg/L Main supplier: CREST HILL · 21,169 people · 2018 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 5 pCi/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2014 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 3.718 pCi/L 74% of the EPA limit 5 pCi/L Main supplier: CREST HILL · 21,169 people · 2018 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2.51 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Bromoform | 2.4444 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 2.4075 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Selenium | 2.33 µg/L 4.7% of the EPA limit 50 µg/L Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| Arsenic | 1.4165 µg/L 14% of the EPA limit 10 µg/L Main supplier: CREST HILL · 21,169 people · 2019 | 1/1 | SYR4 |
| PFBS | 0.0521 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2023 | 1/1 | UCMR-5 |
| Pfpea | 0.0322 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2023 | 1/1 | UCMR-5 |
| Pfba | 0.0272 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2023 | 1/1 | UCMR-5 |
| Pfhxa | 0.0244 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2023 | 1/1 | UCMR-5 |
| PFOA | 0.0137 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2023 | 1/1 | UCMR-5 |
| Pfhpa | 0.0133 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2023 | 1/1 | UCMR-5 |
| PFHXS | 0.0122 µg/L No EPA limit set Main supplier: CREST HILL · 21,169 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0021 mg/L 14% of the EPA limit 0.0150 mg/L Main supplier: CREST HILL · 21,169 people · 2025 | 1/1 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 60403
| Supplier | State | Population served |
|---|---|---|
| CREST HILL | IL | 21,169 |
Frequently asked questions about ZIP 60403 tap water
Is the tap water in ZIP 60403 safe to drink?
EPA testing detected 32 contaminants across the water suppliers serving ZIP 60403. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 60403?
1 public water supplier report EPA drinking-water monitoring for ZIP 60403. Each is listed above with its population served.
What contaminants are in ZIP 60403's water?
EPA monitoring detected Copper, Nitrate, Nitrate-Nitrite, Fluoride, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.