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 | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| MCL | Health-based | Resolved | 2014-07-01 → 2014-09-30 |
| RPT | Monitoring | Resolved | 2025-07-02 |
| RPT | Monitoring | Resolved | 2025-07-02 |
| RPT | Monitoring | Resolved | 2025-07-02 |
| Other | Monitoring | Resolved | 2024-12-30 |
| Other | Monitoring | Resolved | 2024-12-30 |
| MR | Monitoring | Resolved | 2015-01-01 → 2015-01-31 |
| MR | Monitoring | Resolved | 2015-01-01 → 2015-01-31 |
PFAS detected
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| Pfhxa | 0.0031 µg/L | 2/4 | 2023 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 4220 µg/L 42% of the EPA limit 10000 µg/L
worst single sample: 5020 µg/L | 164/192 | SYR4 | 2012–2019 |
| Copper | 35 µg/L 2.7% of the EPA limit 1300 µg/L
worst single sample: 48 µg/L | 156/211 | SYR4 | 2014–2019 |
| Chlorite | 185 µg/L 19% of the EPA limit 1000 µg/L
worst single sample: 203 µg/L | 150/155 | SYR4 | 2012–2017 |
| Bromodichloromethane | 15.9 µg/L No EPA limit set
worst single sample: 20.9 µg/L | 136/136 | SYR4 | 2012–2019 |
| Chloroform | 68.15 µg/L No EPA limit set
worst single sample: 94.9 µg/L | 136/136 | SYR4 | 2012–2019 |
| Dibromochloromethane | 9.225 µg/L No EPA limit set
worst single sample: 11.5 µg/L | 136/136 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 17.09 µg/L No EPA limit set
worst single sample: 23.7 µg/L | 128/128 | SYR4 | 2012–2019 |
| TTHM | 87.295 µg/L 109% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 101 µg/L | 128/128 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 23.29 µg/L 39% of the EPA limit 60 µg/L
worst single sample: 42 µg/L | 127/127 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 3.3 µg/L No EPA limit set
worst single sample: 4.4 µg/L | 101/128 | SYR4 | 2012–2019 |
| Bromoform | 2.285 µg/L No EPA limit set
worst single sample: 2.5 µg/L | 84/133 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 4231 µg/L 42% of the EPA limit 10000 µg/L
worst single sample: 5020 µg/L | 82/96 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 4.46 µg/L No EPA limit set
worst single sample: 14.2 µg/L | 80/128 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 25/25 | LCR | 2025 |
| Monochloroacetic Acid | 3.575 µg/L No EPA limit set
worst single sample: 4.1 µg/L | 16/128 | SYR4 | 2012–2019 |
| Atrazine | 0.8490 µg/L 28% of the EPA limit 3 µg/L
worst single sample: 0.9400 µg/L | 15/38 | SYR4 | 2012–2019 |
| Lead | 12.8 µg/L 85% of the EPA limit 15 µg/L
worst single sample: 17 µg/L | 15/211 | SYR4 | 2014–2019 |
| Barium | 12 µg/L 0.6% of the EPA limit 2000 µg/L | 8/8 | SYR4 | 2012–2019 |
| Fluoride | 999 µg/L 25% of the EPA limit 4000 µg/L
worst single sample: 1020 µg/L | 8/8 | SYR4 | 2012–2019 |
| Simazine | 0.0783 µg/L 2% of the EPA limit 4 µg/L
worst single sample: 0.0820 µg/L | 6/38 | SYR4 | 2012–2019 |
| Nitrite | 170 µg/L 17% of the EPA limit 1000 µg/L | 1/96 | SYR4 | 2012–2019 |
62 contaminants tested, none detected
Utility contact
Frequently asked questions about Oregon City
Is Oregon City tap water safe to drink?
EPA monitoring detected 22 contaminants in Oregon City'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 Oregon City's water?
EPA monitoring detected Nitrate, Copper, Chlorite, Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Oregon City serve?
Oregon City reports serving 19,950 people in Ohio, per its EPA record.
Has Oregon City had any water quality violations?
The EPA has 20 violations on file for Oregon City, of which 3 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.