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 | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| MCL | Health-based | Archived | 2025-10-01 → 2025-12-31 |
| TT | Health-based | Resolved | 2024-10-17 |
| TT | Health-based | Resolved | 2024-10-17 |
| MCL | Health-based | Archived | 2023-10-01 → 2023-12-31 |
| MCL | Health-based | Archived | 2023-10-01 → 2023-12-31 |
| MCL | Health-based | Archived | 2023-10-01 → 2023-12-31 |
| MCL | Health-based | Archived | 2023-07-01 → 2023-09-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 17.19 µg/L No EPA limit set
worst single sample: 19.4 µg/L | 59/59 | SYR4 | 2012–2019 |
| Chloroform | 103.1 µg/L No EPA limit set
worst single sample: 135 µg/L | 59/59 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 31.98 µg/L No EPA limit set
worst single sample: 42.2 µg/L | 57/57 | SYR4 | 2012–2019 |
| TTHM | 124.2 µg/L 155% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 150 µg/L | 57/57 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 71.12 µg/L 119% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 84.3 µg/L | 57/57 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 32.72 µg/L No EPA limit set
worst single sample: 42.5 µg/L | 57/57 | SYR4 | 2012–2019 |
| Dibromochloromethane | 3.1705 µg/L No EPA limit set
worst single sample: 3.61 µg/L | 50/59 | SYR4 | 2012–2019 |
| Copper | 243.75 µg/L 19% of the EPA limit 1300 µg/L
worst single sample: 258 µg/L | 20/20 | SYR4 | 2014–2017 |
| Nitrate-Nitrite | 320 µg/L 3.2% of the EPA limit 10000 µg/L | 14/16 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 8.776 µg/L No EPA limit set
worst single sample: 8.8 µg/L | 13/57 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 12/12 | LCR | 2023 |
| Gross Beta Particle Activity | 4.1135 pCi/L No EPA limit set
worst single sample: 4.16 pCi/L | 2/2 | SYR4 | 2013–2019 |
| Barium | 18 µg/L 0.9% of the EPA limit 2000 µg/L | 1/1 | SYR4 | 2012 |
| Combined Radium (-226 And -228) | 1.51 pCi/L 30% of the EPA limit 5 pCi/L | 1/2 | SYR4 | 2013–2019 |
| Dibromoacetic Acid | 1.3 µg/L No EPA limit set | 1/57 | SYR4 | 2012–2019 |
35 contaminants tested, none detected
Utility contact
Frequently asked questions about Spiro
Is Spiro tap water safe to drink?
EPA monitoring detected 15 contaminants in Spiro'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 Spiro's water?
EPA monitoring detected Bromodichloromethane, Chloroform, Dichloroacetic Acid, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does Spiro serve?
Spiro reports serving 2,200 people in Oklahoma, per its EPA record.
Has Spiro had any water quality violations?
The EPA has 301 violations on file for Spiro, of which 271 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.