Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
| Violation | Type | Status | Period |
|---|---|---|---|
| Other | Monitoring | Resolved | 2018-07-01 |
| Other | Monitoring | Resolved | 2018-07-01 |
| MR | Monitoring | Archived | 1977-06-30 → 1981-06-29 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 759.4 µg/L 58% of the EPA limit 1300 µg/L
worst single sample: 1120 µg/L | 75/91 | SYR4 | 2012–2018 |
| Lead | 14.895 µg/L 99% of the EPA limit 15 µg/L
worst single sample: 24 µg/L | 48/90 | SYR4 | 2012–2018 |
| Bromodichloromethane | 13.755 µg/L No EPA limit set
worst single sample: 14 µg/L | 28/28 | SYR4 | 2012–2019 |
| Bromoform | 4.7785 µg/L No EPA limit set
worst single sample: 4.83 µg/L | 28/28 | SYR4 | 2012–2019 |
| Chloroform | 17.609 µg/L No EPA limit set
worst single sample: 19 µg/L | 28/28 | SYR4 | 2012–2019 |
| Dibromochloromethane | 12.06 µg/L No EPA limit set
worst single sample: 12.2 µg/L | 28/28 | SYR4 | 2012–2019 |
| TTHM | 46.475 µg/L 58% of the EPA limit 80 µg/L
worst single sample: 48 µg/L | 28/28 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 3.1225 µg/L No EPA limit set
worst single sample: 3.3 µg/L | 26/28 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 11.1425 µg/L 19% of the EPA limit 60 µg/L
worst single sample: 19.3 µg/L | 26/28 | SYR4 | 2012–2019 |
| Lead | 0.0016 mg/L 11% of the EPA limit 0.0150 mg/L | 20/20 | LCR | 2025 |
| Trichloroacetic Acid | 6.74 µg/L No EPA limit set
worst single sample: 8.6 µg/L | 7/28 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 7.228 µg/L No EPA limit set
worst single sample: 7.4 µg/L | 5/28 | SYR4 | 2012–2019 |
| Barium | 52.9 µg/L 2.6% of the EPA limit 2000 µg/L
worst single sample: 53 µg/L | 3/3 | SYR4 | 2012–2018 |
| Combined Radium (-226 And -228) | 1.1275 pCi/L 23% of the EPA limit 5 pCi/L
worst single sample: 1.17 pCi/L | 3/6 | SYR4 | 2014–2019 |
| Fluoride | 1207 µg/L 30% of the EPA limit 4000 µg/L
worst single sample: 1230 µg/L | 3/3 | SYR4 | 2012–2018 |
| Nitrate | 490 µg/L 4.9% of the EPA limit 10000 µg/L | 2/16 | SYR4 | 2012–2019 |
| Lithium | 10.7 µg/L No EPA limit set | 2/2 | UCMR-5 | 2025 |
| Arsenic | 1.5 µg/L 15% of the EPA limit 10 µg/L | 1/3 | SYR4 | 2012–2018 |
89 contaminants tested, none detected
Utility contact
Frequently asked questions about Carpentersville
Is Carpentersville tap water safe to drink?
EPA monitoring detected 18 contaminants in Carpentersville's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Carpentersville's water?
EPA monitoring detected Copper, Lead, Bromodichloromethane, Bromoform, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Carpentersville serve?
Carpentersville reports serving 37,983 people in Illinois, per its EPA record.
Has Carpentersville had any water quality violations?
The EPA has 3 violations on file for Carpentersville, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
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.