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 | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2026-01-01 → 2026-03-31 |
| MCL | Health-based | Archived | 2025-07-01 → 2025-09-30 |
| MCL | Health-based | Archived | 2025-07-01 → 2025-09-30 |
| MCL | Health-based | Archived | 2025-07-01 → 2025-09-30 |
| MCL | Health-based | Archived | 2025-07-01 → 2025-09-30 |
| MCL | Health-based | Archived | 2025-04-01 → 2025-06-30 |
| MCL | Health-based | Archived | 2025-04-01 → 2025-06-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 334.5 µg/L 26% of the EPA limit 1300 µg/L
worst single sample: 364 µg/L | 52/55 | SYR4 | 2012–2018 |
| Nitrate | 8381 µg/L 84% of the EPA limit 10000 µg/L
worst single sample: 8400 µg/L | 40/40 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 16/16 | LCR | 2025 |
| Nitrate-Nitrite | 8138 µg/L 81% of the EPA limit 10000 µg/L
worst single sample: 8380 µg/L | 12/12 | SYR4 | 2012–2018 |
| Lead | 48.25 µg/L 322% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 51 µg/L | 6/55 | SYR4 | 2012–2018 |
| Combined Uranium | 34.8 µg/L 116% of the EPA limit, at the 95th percentile of samples — 30 µg/L
worst single sample: 35 µg/L | 3/3 | SYR4 | 2016–2019 |
| Lithium | 210 µg/L No EPA limit set | 2/2 | UCMR-5 | 2023 |
| Arsenic | 3.5 µg/L 35% of the EPA limit 10 µg/L | 1/1 | SYR4 | 2013 |
| Barium | 26 µg/L 1.3% of the EPA limit 2000 µg/L | 1/1 | SYR4 | 2013 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L | 1/1 | SYR4 | 2013 |
| Fluoride | 550 µg/L 14% of the EPA limit 4000 µg/L | 1/1 | SYR4 | 2013 |
| Nitrite | 2340 µg/L 234% of the EPA limit, at the 95th percentile of samples — 1000 µg/L | 1/12 | SYR4 | 2012–2018 |
89 contaminants tested, none detected
Utility contact
Frequently asked questions about Cs Tierra Mesa Estates Water Company
Is Cs Tierra Mesa Estates Water Company tap water safe to drink?
EPA monitoring detected 12 contaminants in Cs Tierra Mesa Estates Water Company'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 Cs Tierra Mesa Estates Water Company's water?
EPA monitoring detected Copper, Nitrate, Lead, Nitrate-Nitrite, Lead, and others. The full list with the level and data source for each is above.
How many people does Cs Tierra Mesa Estates Water Company serve?
Cs Tierra Mesa Estates Water Company reports serving 632 people in Missouri, per its EPA record.
Has Cs Tierra Mesa Estates Water Company had any water quality violations?
The EPA has 284 violations on file for Cs Tierra Mesa Estates Water Company, of which 79 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.