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 |
|---|---|---|---|
| MR | Monitoring | Unaddressed | 2025-12-30 |
| RPT | Monitoring | Unaddressed | 2025-07-02 |
| MON | Monitoring | Resolved | 2024-01-01 → 2024-01-31 |
| MON | Monitoring | Resolved | 2024-01-01 → 2024-01-31 |
| MON | Monitoring | Resolved | 2024-01-01 → 2024-01-31 |
| MON | Monitoring | Resolved | 2024-01-01 → 2024-01-31 |
| MON | Monitoring | Resolved | 2023-12-01 → 2023-12-31 |
| MON | Monitoring | Resolved | 2023-12-01 → 2023-12-31 |
| MON | Monitoring | Resolved | 2023-12-01 → 2023-12-31 |
| MON | Monitoring | Resolved | 2023-12-01 → 2023-12-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 110 µg/L 8.5% of the EPA limit 1300 µg/L | 12/13 | SYR4 | 2013–2019 |
| Lead | 0.00061 mg/L 4.1% of the EPA limit 0.0150 mg/L | 12/12 | LCR | 2025 |
| Nitrate-Nitrite | 160 µg/L 1.6% of the EPA limit 10000 µg/L | 10/16 | SYR4 | 2012–2019 |
| Lead | 11.3 µg/L 75% of the EPA limit 15 µg/L | 6/13 | SYR4 | 2013–2019 |
| Barium | 11.7 µg/L 0.6% of the EPA limit 2000 µg/L | 3/3 | SYR4 | 2013–2019 |
| Chromium | 5 µg/L 5% of the EPA limit 100 µg/L | 2/3 | SYR4 | 2013–2019 |
| Chloroform | 0.5100 µg/L No EPA limit set | 1/6 | SYR4 | 2013–2019 |
61 contaminants tested, none detected
Utility contact
Frequently asked questions about Shell Rock Utilities
Is Shell Rock Utilities tap water safe to drink?
EPA monitoring detected 7 contaminants in Shell Rock Utilities'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 Shell Rock Utilities's water?
EPA monitoring detected Copper, Lead, Nitrate-Nitrite, Lead, Barium, and others. The full list with the level and data source for each is above.
How many people does Shell Rock Utilities serve?
Shell Rock Utilities reports serving 45 people in Missouri, per its EPA record.
Has Shell Rock Utilities had any water quality violations?
The EPA has 30 violations on file for Shell Rock Utilities, of which 0 are health-based (a contaminant limit or required treatment was breached) and 2 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.