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 | 2019-07-01 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Chloroform | 21.8 µg/L No EPA limit set
worst single sample: 27.9 µg/L | 164/173 | SYR4 | 2012–2019 |
| Bromodichloromethane | 2.495 µg/L No EPA limit set
worst single sample: 3.3 µg/L | 155/173 | SYR4 | 2012–2019 |
| TTHM | 24.84 µg/L 31% of the EPA limit 80 µg/L
worst single sample: 30.8 µg/L | 150/171 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 25.96 µg/L No EPA limit set
worst single sample: 32 µg/L | 149/172 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 3.738 µg/L No EPA limit set
worst single sample: 6.54 µg/L | 107/172 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 30.52 µg/L 51% of the EPA limit 60 µg/L
worst single sample: 35.9 µg/L | 100/172 | SYR4 | 2012–2019 |
| Copper | 25.605 µg/L 2% of the EPA limit 1300 µg/L
worst single sample: 49.4 µg/L | 92/92 | SYR4 | 2012–2018 |
| Dibromochloromethane | 1.754 µg/L No EPA limit set
worst single sample: 2.52 µg/L | 45/173 | SYR4 | 2012–2019 |
| Bromoform | 1.929 µg/L No EPA limit set
worst single sample: 2.22 µg/L | 27/173 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.425 µg/L No EPA limit set
worst single sample: 2.99 µg/L | 26/172 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 25/25 | LCR | 2024 |
| Lead | 3.7875 µg/L 25% of the EPA limit 15 µg/L
worst single sample: 5.46 µg/L | 16/92 | SYR4 | 2012–2018 |
| Nitrate-Nitrite | 63 µg/L 0.6% of the EPA limit 10000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Chromium | 2.452 µg/L 2.5% of the EPA limit 100 µg/L
worst single sample: 2.92 µg/L | 13/13 | SYR4 | 2013–2017 |
| Lithium | 53.1 µg/L No EPA limit set | 6/6 | UCMR-5 | 2024 |
| Monochloroacetic Acid | 7.23 µg/L No EPA limit set
worst single sample: 7.55 µg/L | 5/172 | SYR4 | 2012–2019 |
| Barium | 29.52 µg/L 1.5% of the EPA limit 2000 µg/L
worst single sample: 29.6 µg/L | 2/2 | SYR4 | 2014–2017 |
| Fluoride | 596 µg/L 15% of the EPA limit 4000 µg/L
worst single sample: 610 µg/L | 2/2 | SYR4 | 2014–2017 |
| Monobromoacetic Acid | 4.19 µg/L No EPA limit set | 1/172 | SYR4 | 2012–2019 |
| Trichloroethylene | 0.5900 µg/L 12% of the EPA limit 5 µg/L | 1/2 | SYR4 | 2014–2017 |
74 contaminants tested, none detected
Utility contact
Frequently asked questions about St Peters
Is St Peters tap water safe to drink?
EPA monitoring detected 24 contaminants in St Peters'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 Peters's water?
EPA monitoring detected Chloroform, Bromodichloromethane, TTHM, Dichloroacetic Acid, Trichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does St Peters serve?
St Peters reports serving 52,575 people in Missouri, per its EPA record.
Has St Peters had any water quality violations?
The EPA has 1 violation on file for St Peters, 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.