What was found in ZIP 95391
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 | 1000000 µg/L 10000% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Nitrate | 1084.8 µg/L 11% of the EPA limit 10000 µg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Fluoride | 100 µg/L 2.5% of the EPA limit 4000 µg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| TTHM | 94.69 µg/L 118% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Barium | 67.8 µg/L 3.4% of the EPA limit 2000 µg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Copper | 43.6 µg/L 3.4% of the EPA limit 1300 µg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Bromoform | 39.59 µg/L No EPA limit set Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 37.585 µg/L No EPA limit set Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 20.3 µg/L 34% of the EPA limit 60 µg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 19.58 µg/L No EPA limit set Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Chloroform | 14 µg/L No EPA limit set Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 13.85 µg/L No EPA limit set Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 10 µg/L No EPA limit set Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Chromium | 8.5 µg/L 8.5% of the EPA limit 100 µg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Selenium | 6 µg/L 12% of the EPA limit 50 µg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 6 µg/L No EPA limit set Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Lead | 4.46 µg/L 30% of the EPA limit 15 µg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 3 µg/L No EPA limit set Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Arsenic | 2.55 µg/L 26% of the EPA limit 10 µg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 2 µg/L No EPA limit set Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Mercury | 0.0200 µg/L 1% of the EPA limit 2 µg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF MOUNTAIN HOUSE · 24,948 people · 2025 | 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 95391
| Supplier | State | Population served |
|---|---|---|
| CITY OF MOUNTAIN HOUSE | CA | 24,948 |
Frequently asked questions about ZIP 95391 tap water
Is the tap water in ZIP 95391 safe to drink?
EPA testing detected 22 contaminants across the water suppliers serving ZIP 95391. 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 95391?
1 public water supplier report EPA drinking-water monitoring for ZIP 95391. Each is listed above with its population served.
What contaminants are in ZIP 95391's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, TTHM, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.