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 | Addressed | 2026-04-01 → 2026-06-30 |
| MCL | Health-based | Addressed | 2026-04-01 → 2026-06-30 |
| MCL | Health-based | Addressed | 2026-04-01 → 2026-06-30 |
| MCL | Health-based | Addressed | 2026-04-01 → 2026-06-30 |
| MCL | Health-based | Addressed | 2026-04-01 → 2026-06-30 |
| MCL | Health-based | Addressed | 2026-04-01 → 2026-06-30 |
| 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 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 17/17 | LCR | 2026 |
| Nitrate | 900 µg/L 9% of the EPA limit 10000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 22 pCi/L 440% of the EPA limit, in the worst sample — 5 pCi/L | 14/14 | SYR4 | 2012–2019 |
| Gross Alpha, Excl. Radon And U | 35 pCi/L 233% of the EPA limit, in the worst sample — 15 pCi/L | 14/14 | SYR4 | 2012–2019 |
| Fluoride | 1330 µg/L 33% of the EPA limit 4000 µg/L | 3/3 | SYR4 | 2013–2019 |
| TTHM | 7.2 µg/L 9% of the EPA limit 80 µg/L | 3/3 | SYR4 | 2012–2017 |
| Barium | 12 µg/L 0.6% of the EPA limit 2000 µg/L | 2/2 | SYR4 | 2016–2019 |
| Total Haloacetic Acids (HAA5) | 2.98 µg/L 5% of the EPA limit 60 µg/L | 2/3 | SYR4 | 2012–2017 |
| Arsenic | 2 µg/L 20% of the EPA limit 10 µg/L | 1/2 | SYR4 | 2016–2019 |
| Bromodichloromethane | 1 µg/L No EPA limit set | 1/1 | SYR4 | 2017 |
| Bromoform | 2.4 µg/L No EPA limit set | 1/1 | SYR4 | 2017 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L | 1/2 | SYR4 | 2016–2019 |
| Dibromochloromethane | 2.8 µg/L No EPA limit set | 1/1 | SYR4 | 2017 |
| Gross Beta Particle Activity | 9.7 pCi/L No EPA limit set | 1/1 | SYR4 | 2015 |
| Nitrate-Nitrite | 600 µg/L 6% of the EPA limit 10000 µg/L | 1/1 | SYR4 | 2019 |
| Selenium | 1 µg/L 2% of the EPA limit 50 µg/L | 1/2 | SYR4 | 2016–2019 |
62 contaminants tested, none detected
Utility contact
Frequently asked questions about Eureka Wc
Is Eureka Wc tap water safe to drink?
EPA monitoring detected 16 contaminants in Eureka Wc'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 Eureka Wc's water?
EPA monitoring detected Lead, Nitrate, Combined Radium (-226 And -228), Gross Alpha, Excl. Radon And U, Fluoride, and others. The full list with the level and data source for each is above.
How many people does Eureka Wc serve?
Eureka Wc reports serving 498 people in Colorado, per its EPA record.
Has Eureka Wc had any water quality violations?
The EPA has 713 violations on file for Eureka Wc, of which 404 are health-based (a contaminant limit or required treatment was breached) and 6 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.