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 |
|---|---|---|---|
| TT | Health-based | Resolved | 2009-04-01 → 2009-06-30 |
| TT | Health-based | Resolved | 2009-04-01 → 2009-06-30 |
| TT | Health-based | Resolved | 2009-04-01 → 2009-06-30 |
| TT | Health-based | Resolved | 2009-04-01 → 2009-06-30 |
| MR | Monitoring | Resolved | 2007-10-01 |
| MR | Monitoring | Resolved | 2007-10-01 |
| MR | Monitoring | Resolved | 2005-01-01 → 2007-12-31 |
| MR | Monitoring | Resolved | 2005-01-01 → 2007-12-31 |
| MR | Monitoring | Resolved | 2005-01-01 → 2007-12-31 |
| MR | Monitoring | Resolved | 2005-01-01 → 2007-12-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Chlorite | 645 µg/L 65% of the EPA limit 1000 µg/L
worst single sample: 1300 µg/L | 131/132 | SYR4 | 2012–2019 |
| TTHM | 52.805 µg/L 66% of the EPA limit 80 µg/L
worst single sample: 63.4 µg/L | 114/114 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 31.3 µg/L 52% of the EPA limit 60 µg/L
worst single sample: 39.3 µg/L | 111/115 | SYR4 | 2012–2019 |
| Bromodichloromethane | 14.405 µg/L No EPA limit set
worst single sample: 16 µg/L | 38/38 | SYR4 | 2012–2019 |
| Chloroform | 24 µg/L No EPA limit set
worst single sample: 29 µg/L | 38/38 | SYR4 | 2012–2019 |
| Dibromochloromethane | 7.975 µg/L No EPA limit set
worst single sample: 8.6 µg/L | 38/38 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 12.35 µg/L No EPA limit set
worst single sample: 16 µg/L | 34/34 | SYR4 | 2015–2019 |
| Trichloroacetic Acid | 11.7 µg/L No EPA limit set
worst single sample: 13 µg/L | 34/34 | SYR4 | 2015–2019 |
| Nitrate | 775 µg/L 7.8% of the EPA limit 10000 µg/L
worst single sample: 800 µg/L | 26/34 | SYR4 | 2012–2019 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 17/17 | LCR | 2025 |
| Dibromoacetic Acid | 2.33 µg/L No EPA limit set
worst single sample: 2.4 µg/L | 15/34 | SYR4 | 2015–2019 |
| Bromoform | 1.1 µg/L No EPA limit set | 13/38 | SYR4 | 2012–2019 |
| Fluoride | 850 µg/L 21% of the EPA limit 4000 µg/L
worst single sample: 900 µg/L | 11/11 | SYR4 | 2012–2018 |
| Lithium | 25 µg/L No EPA limit set | 6/6 | UCMR-5 | 2025 |
| Barium | 50.25 µg/L 2.5% of the EPA limit 2000 µg/L
worst single sample: 51 µg/L | 4/4 | SYR4 | 2012–2018 |
| Monobromoacetic Acid | 2.025 µg/L No EPA limit set
worst single sample: 2.1 µg/L | 4/34 | SYR4 | 2015–2019 |
| Selenium | 6.255 µg/L 13% of the EPA limit 50 µg/L
worst single sample: 6.6 µg/L | 4/4 | SYR4 | 2012–2018 |
| Combined Radium (-226 And -228) | 1.3465 pCi/L 27% of the EPA limit 5 pCi/L
worst single sample: 1.38 pCi/L | 2/2 | SYR4 | 2015 |
| Combined Uranium | 6.595 µg/L 22% of the EPA limit 30 µg/L
worst single sample: 6.8 µg/L | 2/2 | SYR4 | 2015 |
| Gross Alpha, Excl. Radon And U | 1.525 pCi/L 10% of the EPA limit 15 pCi/L
worst single sample: 1.6 pCi/L | 2/2 | SYR4 | 2015 |
| Nitrate-Nitrite | 400 µg/L 4% of the EPA limit 10000 µg/L | 2/4 | SYR4 | 2012–2015 |
89 contaminants tested, none detected
Utility contact
Frequently asked questions about St Charles Mesa Wd
Is St Charles Mesa Wd tap water safe to drink?
EPA monitoring detected 21 contaminants in St Charles Mesa Wd'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 St Charles Mesa Wd's water?
EPA monitoring detected Chlorite, TTHM, Total Haloacetic Acids (HAA5), Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.
How many people does St Charles Mesa Wd serve?
St Charles Mesa Wd reports serving 9,690 people in Colorado, per its EPA record.
Has St Charles Mesa Wd had any water quality violations?
The EPA has 130 violations on file for St Charles Mesa Wd, of which 4 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.