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 | 1993-08-01 → 1993-08-31 |
| MR | Monitoring | Resolved | 2023-04-01 → 2023-06-30 |
| MR | Monitoring | Resolved | 2023-04-01 → 2023-06-30 |
| MR | Monitoring | Resolved | 2016-07-01 → 2016-09-30 |
| MR | Monitoring | Resolved | 2016-07-01 → 2016-09-30 |
| Other | Monitoring | Resolved | 2016-07-01 |
| MR | Monitoring | Archived | 1979-10-01 → 1979-10-31 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 14.365 µg/L No EPA limit set
worst single sample: 25.3 µg/L | 250/260 | SYR4 | 2012–2019 |
| TTHM | 58.1035 µg/L 73% of the EPA limit 80 µg/L
worst single sample: 93.01 µg/L | 250/250 | SYR4 | 2012–2019 |
| Chloroform | 44.175 µg/L No EPA limit set
worst single sample: 56.9 µg/L | 246/254 | SYR4 | 2012–2019 |
| Dibromochloromethane | 17.37 µg/L No EPA limit set
worst single sample: 26.9 µg/L | 212/257 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 24.675 µg/L 41% of the EPA limit 60 µg/L
worst single sample: 33.4 µg/L | 211/241 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 11.57 µg/L No EPA limit set
worst single sample: 17 µg/L | 187/243 | SYR4 | 2012–2019 |
| Bromoform | 8.4765 µg/L No EPA limit set
worst single sample: 15.6 µg/L | 180/259 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 15.8 µg/L No EPA limit set
worst single sample: 22.2 µg/L | 153/245 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 4.686 µg/L No EPA limit set
worst single sample: 6.04 µg/L | 108/243 | SYR4 | 2012–2019 |
| Nitrate | 5000 µg/L 50% of the EPA limit 10000 µg/L
worst single sample: 5500 µg/L | 46/64 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 14/14 | LCR | 2025 |
| Barium | 60.92 µg/L 3% of the EPA limit 2000 µg/L
worst single sample: 61.7 µg/L | 7/7 | SYR4 | 2012–2014 |
| Arsenic | 4.74 µg/L 47% of the EPA limit 10 µg/L
worst single sample: 5 µg/L | 5/7 | SYR4 | 2012–2014 |
| Copper | 40.58 µg/L 3.1% of the EPA limit 1300 µg/L
worst single sample: 50 µg/L | 5/7 | SYR4 | 2012–2014 |
| Nitrate-Nitrite | 3780 µg/L 38% of the EPA limit 10000 µg/L
worst single sample: 3790 µg/L | 5/8 | SYR4 | 2012–2015 |
| Gross Beta Particle Activity | 10.3165 pCi/L No EPA limit set
worst single sample: 11.5 pCi/L | 4/7 | SYR4 | 2012–2014 |
| Chromium | 1.414 µg/L 1.4% of the EPA limit 100 µg/L
worst single sample: 1.44 µg/L | 3/7 | SYR4 | 2012–2014 |
| Fluoride | 713.9 µg/L 18% of the EPA limit 4000 µg/L
worst single sample: 769 µg/L | 3/7 | SYR4 | 2012–2014 |
| Dichloromethane | 0.8300 µg/L 17% of the EPA limit 5 µg/L | 1/14 | SYR4 | 2012–2019 |
| Lead | 1.61 µg/L 11% of the EPA limit 15 µg/L | 1/7 | SYR4 | 2012–2014 |
| Monobromoacetic Acid | 1.55 µg/L No EPA limit set | 1/248 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 2.1 µg/L No EPA limit set | 1/248 | SYR4 | 2012–2019 |
| Lithium | 9.38 µg/L No EPA limit set | 1/8 | UCMR-5 | 2023 |
81 contaminants tested, none detected
Utility contact
Frequently asked questions about Kennewick City of
Is Kennewick City of tap water safe to drink?
EPA monitoring detected 29 contaminants in Kennewick 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 Kennewick 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 Kennewick City of serve?
Kennewick City of reports serving 118,164 people in Washington, per its EPA record.
Has Kennewick City of had any water quality violations?
The EPA has 7 violations on file for Kennewick City of, of which 1 is 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.