What was found in ZIP 91763
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 | 17000 µg/L 170% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Nitrate | 16000 µg/L 160% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Fluoride | 290 µg/L 7.2% of the EPA limit 4000 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Copper | 98 µg/L 7.5% of the EPA limit 1300 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| TTHM | 73.71 µg/L 92% of the EPA limit 80 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 27.175 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Bromoform | 24.965 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 20.3 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Chloroform | 16.48 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 14.45 µg/L 24% of the EPA limit 60 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Chromium | 12 µg/L 12% of the EPA limit 100 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 9.61 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Lead | 8.4 µg/L 56% of the EPA limit 15 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Arsenic | 5.825 µg/L 58% of the EPA limit 10 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 4.93 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 3.9 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.225 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Tetrachloroethylene | 0.6400 µg/L 13% of the EPA limit 5 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Trichloroethylene | 0.5800 µg/L 12% of the EPA limit 5 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| 1,1-Dichloroethylene | 0.5200 µg/L 7.4% of the EPA limit 7 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.2185 µg/L 109% of the EPA limit, at the 95th percentile of samples — 0.2000 µg/L Main supplier: MONTE VISTA WD · 56,017 people · 2019 | 1/1 | SYR4 |
| Pfba | 0.0110 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2025 | 1/1 | UCMR-5 |
| PFHXS | 0.0074 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2025 | 1/1 | UCMR-5 |
| PFOS | 0.0056 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2025 | 1/1 | UCMR-5 |
| Pfpea | 0.0035 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0033 µg/L No EPA limit set Main supplier: MONTE VISTA WD · 56,017 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: MONTE VISTA WD · 56,017 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 91763
| Supplier | State | Population served |
|---|---|---|
| MONTE VISTA WD | CA | 56,017 |
Frequently asked questions about ZIP 91763 tap water
Is the tap water in ZIP 91763 safe to drink?
EPA testing detected 27 contaminants across the water suppliers serving ZIP 91763. 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 91763?
1 public water supplier report EPA drinking-water monitoring for ZIP 91763. Each is listed above with its population served.
What contaminants are in ZIP 91763's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.