What was found in ZIP 95251
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 92000 µg/L 920% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2019 | 1/1 | SYR4 |
| Nitrate | 164.98 µg/L 1.6% of the EPA limit 10000 µg/L Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2019 | 1/1 | SYR4 |
| TTHM | 89 µg/L 111% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2019 | 1/1 | SYR4 |
| Chloroform | 86 µg/L No EPA limit set Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2019 | 1/1 | SYR4 |
| Lithium | 50 µg/L No EPA limit set Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2024 | 1/1 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 34.86 µg/L 58% of the EPA limit 60 µg/L Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 28.384999999999998 µg/L No EPA limit set Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2019 | 1/1 | SYR4 |
| Barium | 11 µg/L 0.5% of the EPA limit 2000 µg/L Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2019 | 1/1 | SYR4 |
| Copper | 8.58 µg/L 0.7% of the EPA limit 1300 µg/L Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 8.560000000000002 µg/L No EPA limit set Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 4.547999999999999 µg/L No EPA limit set Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 4.045 µg/L No EPA limit set Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 2.7 µg/L No EPA limit set Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: UNION PUBLIC UTILITY DISTRICT · 4,774 people · 2023 | 1/1 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 95251
| Supplier | State | Population served |
|---|---|---|
| UNION PUBLIC UTILITY DISTRICT | CA | 4,774 |
Frequently asked questions about ZIP 95251 tap water
Is the tap water in ZIP 95251 safe to drink?
EPA testing detected 14 contaminants across the water suppliers serving ZIP 95251. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 95251?
1 public water supplier report EPA drinking-water monitoring for ZIP 95251. Each is listed above with its population served.
What contaminants are in ZIP 95251's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, TTHM, Chloroform, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.