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 | 1994-09-01 → 1994-09-30 |
| MCL | Health-based | Resolved | 1994-09-01 → 1994-09-30 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 20.84 µg/L No EPA limit set
worst single sample: 31.7 µg/L | 224/224 | SYR4 | 2012–2019 |
| Chloroform | 18.585 µg/L No EPA limit set
worst single sample: 43.6 µg/L | 224/224 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 8.1395 µg/L No EPA limit set
worst single sample: 15.3 µg/L | 224/224 | SYR4 | 2012–2019 |
| Dibromochloromethane | 21.925 µg/L No EPA limit set
worst single sample: 25.6 µg/L | 224/224 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 13.385 µg/L No EPA limit set
worst single sample: 21.1 µg/L | 224/224 | SYR4 | 2012–2019 |
| TTHM | 63.38 µg/L 79% of the EPA limit 80 µg/L
worst single sample: 88.7 µg/L | 224/224 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 33.34 µg/L 56% of the EPA limit 60 µg/L
worst single sample: 44.4 µg/L | 224/224 | SYR4 | 2012–2019 |
| Bromoform | 9.06 µg/L No EPA limit set
worst single sample: 13.9 µg/L | 217/224 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 8.942 µg/L No EPA limit set
worst single sample: 18.1 µg/L | 209/224 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 2.6945 µg/L No EPA limit set
worst single sample: 4.16 µg/L | 52/224 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 22.34 µg/L No EPA limit set
worst single sample: 25.3 µg/L | 39/224 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 26/26 | LCR | 2024 |
| Lithium | 50.1 µg/L No EPA limit set | 5/8 | UCMR-5 | 2024 |
29 contaminants tested, none detected
Utility contact
Frequently asked questions about Walnut Valley Water District
Is Walnut Valley Water District tap water safe to drink?
EPA monitoring detected 13 contaminants in Walnut Valley Water District'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 Walnut Valley Water District's water?
EPA monitoring detected Bromodichloromethane, Chloroform, Dibromoacetic Acid, Dibromochloromethane, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Walnut Valley Water District serve?
Walnut Valley Water District reports serving 100,941 people in California, per its EPA record.
Has Walnut Valley Water District had any water quality violations?
The EPA has 2 violations on file for Walnut Valley Water District, of which 2 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.