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 |
|---|---|---|---|
| MCL | Health-based | Resolved | 2020-07-01 → 2020-09-30 |
| MCL | Health-based | Resolved | 2020-07-01 → 2020-09-30 |
| MCL | Health-based | Resolved | 2020-07-01 → 2020-09-30 |
| MCL | Health-based | Resolved | 2020-07-01 → 2020-09-30 |
| MCL | Health-based | Resolved | 2020-07-01 → 2020-09-30 |
| MCL | Health-based | Resolved | 2020-07-01 → 2020-09-30 |
| Other | Monitoring | Resolved | 2020-09-08 |
| Other | Monitoring | Resolved | 2020-09-08 |
| MR | Monitoring | Resolved | 2008-04-01 → 2008-06-30 |
| MR | Monitoring | Resolved | 2008-04-01 → 2008-06-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 396.5 µg/L 31% of the EPA limit 1300 µg/L
worst single sample: 1500 µg/L | 60/60 | SYR4 | 2012–2018 |
| Lead | 7.885 µg/L 53% of the EPA limit 15 µg/L
worst single sample: 11 µg/L | 54/60 | SYR4 | 2012–2018 |
| Bromodichloromethane | 34.335 µg/L No EPA limit set
worst single sample: 36.9 µg/L | 52/52 | SYR4 | 2012–2019 |
| Bromoform | 3.627 µg/L No EPA limit set
worst single sample: 5.71 µg/L | 52/52 | SYR4 | 2012–2019 |
| Chloroform | 57.435 µg/L No EPA limit set
worst single sample: 60.2 µg/L | 52/52 | SYR4 | 2012–2019 |
| Dibromochloromethane | 19.085 µg/L No EPA limit set
worst single sample: 24.6 µg/L | 52/52 | SYR4 | 2012–2019 |
| TTHM | 113.98 µg/L 142% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 124.2 µg/L | 52/52 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 36.865 µg/L 61% of the EPA limit 60 µg/L
worst single sample: 46.3 µg/L | 50/52 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 12.91 µg/L No EPA limit set
worst single sample: 16.8 µg/L | 50/52 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 5.746 µg/L No EPA limit set
worst single sample: 6.19 µg/L | 49/52 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 21.78 µg/L No EPA limit set
worst single sample: 24.3 µg/L | 48/52 | SYR4 | 2012–2019 |
| Lead | 0.0045 mg/L 30% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2025 |
| Nitrate | 40 µg/L 0.4% of the EPA limit 10000 µg/L | 10/16 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 6.953 µg/L No EPA limit set
worst single sample: 8.36 µg/L | 7/52 | SYR4 | 2012–2019 |
| Barium | 338 µg/L 17% of the EPA limit 2000 µg/L
worst single sample: 340 µg/L | 3/3 | SYR4 | 2012–2018 |
| Fluoride | 996 µg/L 25% of the EPA limit 4000 µg/L
worst single sample: 1000 µg/L | 3/3 | SYR4 | 2012–2018 |
| Monochloroacetic Acid | 4.316 µg/L No EPA limit set
worst single sample: 4.39 µg/L | 2/52 | SYR4 | 2012–2019 |
| Lithium | 36 µg/L No EPA limit set | 2/2 | UCMR-5 | 2025 |
| Arsenic | 2.5 µg/L 25% of the EPA limit 10 µg/L | 1/3 | SYR4 | 2012–2018 |
| Combined Radium (-226 And -228) | 0.6120 pCi/L 12% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2016 |
| Nitrate-Nitrite | 20 µg/L 0.2% of the EPA limit 10000 µg/L | 1/1 | SYR4 | 2012 |
87 contaminants tested, none detected
Utility contact
Frequently asked questions about Calhoun County Rwd
Is Calhoun County Rwd tap water safe to drink?
EPA monitoring detected 21 contaminants in Calhoun County Rwd'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 Calhoun County Rwd'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 Calhoun County Rwd serve?
Calhoun County Rwd reports serving 4,675 people in Illinois, per its EPA record.
Has Calhoun County Rwd had any water quality violations?
The EPA has 30 violations on file for Calhoun County Rwd, of which 6 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.