What was found in Clarendon Hills's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Copper | 349.59999999999997 µg/L 27% of the EPA limit 1300 µg/L Main supplier: CLARENDON HILLS · 8,702 people · 2017 | 1/1 | SYR4 |
| TTHM | 56.1 µg/L 70% of the EPA limit 80 µg/L Main supplier: CLARENDON HILLS · 8,702 people · 2019 | 1/1 | SYR4 |
| Chloroform | 35.1 µg/L No EPA limit set Main supplier: CLARENDON HILLS · 8,702 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 28 µg/L 47% of the EPA limit 60 µg/L Main supplier: CLARENDON HILLS · 8,702 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 15.5 µg/L No EPA limit set Main supplier: CLARENDON HILLS · 8,702 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 13.5 µg/L No EPA limit set Main supplier: CLARENDON HILLS · 8,702 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 11.8 µg/L No EPA limit set Main supplier: CLARENDON HILLS · 8,702 people · 2019 | 1/1 | SYR4 |
| Lead | 10.21 µg/L 68% of the EPA limit 15 µg/L Main supplier: CLARENDON HILLS · 8,702 people · 2017 | 1/1 | SYR4 |
| Dibromochloromethane | 7.93 µg/L No EPA limit set Main supplier: CLARENDON HILLS · 8,702 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 4.921 µg/L No EPA limit set Main supplier: CLARENDON HILLS · 8,702 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.9639999999999995 µg/L No EPA limit set Main supplier: CLARENDON HILLS · 8,702 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.7550000000000001 µg/L No EPA limit set Main supplier: CLARENDON HILLS · 8,702 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0069 mg/L 46% of the EPA limit 0.0150 mg/L Main supplier: CLARENDON HILLS · 8,702 people · 2025 | 1/1 | LCR |
Water suppliers serving Clarendon Hills
| Supplier | Population served |
|---|---|
| CLARENDON HILLS | 8,702 |
Frequently asked questions about Clarendon Hills tap water
Is Clarendon Hills tap water safe to drink?
EPA testing detected 13 contaminants in the water serving Clarendon Hills. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Clarendon Hills?
1 public water supplier report drinking-water monitoring for Clarendon Hills, Illinois to the EPA. Each is listed above with its population served.
What contaminants are in Clarendon Hills's water?
The contaminants EPA monitoring detected in Clarendon Hills include Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Bromodichloromethane. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.