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 | 2019-10-01 → 2019-12-31 |
| MCL | Health-based | Resolved | 2019-10-01 → 2019-12-31 |
| MCL | Health-based | Resolved | 2019-10-01 → 2019-12-31 |
| MCL | Health-based | Resolved | 2019-10-01 → 2019-12-31 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Resolved | 2019-07-01 → 2019-09-30 |
| MCL | Health-based | Archived | 2015-05-01 → 2015-05-31 |
| MCL | Health-based | Archived | 2015-05-01 → 2015-05-31 |
| MCL | Health-based | Archived | 2015-05-01 → 2015-05-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Fluoride | 922 µg/L 23% of the EPA limit 4000 µg/L
worst single sample: 1060 µg/L | 101/101 | SYR4 | 2012–2019 |
| Copper | 1255.5 µg/L 97% of the EPA limit 1300 µg/L
worst single sample: 1770 µg/L | 90/90 | SYR4 | 2013–2019 |
| Bromodichloromethane | 16.8 µg/L No EPA limit set
worst single sample: 17.4 µg/L | 73/109 | SYR4 | 2012–2019 |
| Bromoform | 4.7 µg/L No EPA limit set
worst single sample: 6.49 µg/L | 73/109 | SYR4 | 2012–2019 |
| Chloroform | 13.8 µg/L No EPA limit set
worst single sample: 19.3 µg/L | 73/109 | SYR4 | 2012–2019 |
| Dibromochloromethane | 13.42 µg/L No EPA limit set
worst single sample: 17 µg/L | 73/109 | SYR4 | 2012–2019 |
| TTHM | 45.56 µg/L 57% of the EPA limit 80 µg/L
worst single sample: 47.6 µg/L | 72/108 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 9.091 µg/L 15% of the EPA limit 60 µg/L
worst single sample: 13.4 µg/L | 70/72 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 4.31 µg/L No EPA limit set
worst single sample: 6.08 µg/L | 69/72 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.01 µg/L No EPA limit set
worst single sample: 2.64 µg/L | 64/72 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 4.4395 µg/L No EPA limit set
worst single sample: 6.35 µg/L | 44/72 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 864 µg/L 8.6% of the EPA limit 10000 µg/L
worst single sample: 1240 µg/L | 42/44 | SYR4 | 2012–2019 |
| Arsenic | 15.33 µg/L 153% of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 21.7 µg/L | 30/30 | SYR4 | 2012–2019 |
| Lead | 2.93 µg/L 20% of the EPA limit 15 µg/L
worst single sample: 4.96 µg/L | 29/90 | SYR4 | 2013–2019 |
| cis-1,2-Dichloroethylene | 1.078 µg/L 1.5% of the EPA limit 70 µg/L
worst single sample: 1.19 µg/L | 29/109 | SYR4 | 2012–2019 |
| Lead | 0.0033 mg/L 22% of the EPA limit 0.0150 mg/L | 11/11 | LCR | 2025 |
| Barium | 370.25 µg/L 19% of the EPA limit 2000 µg/L
worst single sample: 379 µg/L | 6/6 | SYR4 | 2012–2018 |
| Combined Radium (-226 And -228) | 4.4075 pCi/L 88% of the EPA limit 5 pCi/L
worst single sample: 4.55 pCi/L | 4/4 | SYR4 | 2012–2019 |
| Lithium | 34 µg/L No EPA limit set | 4/4 | UCMR-5 | 2025 |
| Chromium | 9.476 µg/L 9.5% of the EPA limit 100 µg/L
worst single sample: 9.85 µg/L | 2/6 | SYR4 | 2012–2018 |
| Carbofuran | 0.5700 µg/L 1.4% of the EPA limit 40 µg/L | 1/16 | SYR4 | 2012–2018 |
83 contaminants tested, none detected
Utility contact
Frequently asked questions about Columbus, City of
Is Columbus, City of tap water safe to drink?
EPA monitoring detected 21 contaminants in Columbus, City of'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 Columbus, City of's water?
EPA monitoring detected Fluoride, Copper, Bromodichloromethane, Bromoform, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Columbus, City of serve?
Columbus, City of reports serving 24,028 people in Nebraska, per its EPA record.
Has Columbus, City of had any water quality violations?
The EPA has 40 violations on file for Columbus, City of, of which 39 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.