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 | 2000-08-01 → 2000-08-31 |
| MCL | Health-based | Resolved | 2000-08-01 → 2000-08-31 |
| MCL | Health-based | Resolved | 2000-08-01 → 2000-08-31 |
| MCL | Health-based | Resolved | 2000-08-01 → 2000-08-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 13.1 µg/L No EPA limit set
worst single sample: 16.3 µg/L | 121/128 | SYR4 | 2012–2019 |
| TTHM | 37.4 µg/L 47% of the EPA limit 80 µg/L
worst single sample: 53.1 µg/L | 121/128 | SYR4 | 2012–2019 |
| Chloroform | 17.03 µg/L No EPA limit set
worst single sample: 34.4 µg/L | 119/128 | SYR4 | 2012–2019 |
| Dibromochloromethane | 9.143 µg/L No EPA limit set
worst single sample: 11.9 µg/L | 119/128 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 16.815 µg/L 28% of the EPA limit 60 µg/L
worst single sample: 18.8 µg/L | 118/118 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 7.54 µg/L No EPA limit set
worst single sample: 9.77 µg/L | 117/118 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.3625 µg/L No EPA limit set
worst single sample: 2.94 µg/L | 116/118 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 7.375 µg/L No EPA limit set
worst single sample: 9.14 µg/L | 116/118 | SYR4 | 2012–2019 |
| Bromoform | 1.778 µg/L No EPA limit set
worst single sample: 2.28 µg/L | 79/128 | SYR4 | 2012–2019 |
| Copper | 447.7 µg/L 34% of the EPA limit 1300 µg/L
worst single sample: 786 µg/L | 60/60 | SYR4 | 2013–2019 |
| Lead | 10.93 µg/L 73% of the EPA limit 15 µg/L
worst single sample: 536 µg/L | 51/60 | SYR4 | 2013–2019 |
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L | 10/10 | LCR | 2025 |
| Lithium | 97.3 µg/L No EPA limit set | 8/8 | UCMR-5 | 2024 |
| Monochloroacetic Acid | 8.497 µg/L No EPA limit set
worst single sample: 8.75 µg/L | 2/118 | SYR4 | 2012–2019 |
30 contaminants tested, none detected
Utility contact
Frequently asked questions about South Sioux City, City of
Is South Sioux City, City of tap water safe to drink?
EPA monitoring detected 14 contaminants in South Sioux City, 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 South Sioux City, City of's water?
EPA monitoring detected Bromodichloromethane, TTHM, Chloroform, Dibromochloromethane, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does South Sioux City, City of serve?
South Sioux City, City of reports serving 14,043 people in Nebraska, per its EPA record.
Has South Sioux City, City of had any water quality violations?
The EPA has 4 violations on file for South Sioux City, City of, of which 4 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.