What was found in ZIP 95655
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 | 104200 µg/L 1042% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 2/2 | SYR4 |
| Nitrate | 7406.02 µg/L 74% of the EPA limit 10000 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 2/2 | SYR4 |
| Fluoride | 1084.5 µg/L 27% of the EPA limit 4000 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 2/2 | SYR4 |
| Copper | 271.6 µg/L 21% of the EPA limit 1300 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 1/2 | SYR4 |
| Barium | 200 µg/L 10% of the EPA limit 2000 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 1/2 | SYR4 |
| TTHM | 41.8285 µg/L 52% of the EPA limit 80 µg/L Highest in the ZIP: SCWA MATHER-SUNRISE · 30,825 people · 2018 | 1/2 | SYR4 |
| Chloroform | 37 µg/L No EPA limit set Highest in the ZIP: SCWA MATHER-SUNRISE · 30,825 people · 2018 | 1/2 | SYR4 |
| Arsenic | 20.1 µg/L 201% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 2/2 | SYR4 |
| Lead | 13 µg/L 87% of the EPA limit 15 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 1/2 | SYR4 |
| Combined Uranium | 12.0541 µg/L 40% of the EPA limit 30 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2018 | 1/2 | SYR4 |
| Chromium | 8.77 µg/L 8.8% of the EPA limit 100 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 1/2 | SYR4 |
| Selenium | 6 µg/L 12% of the EPA limit 50 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 5.7 µg/L No EPA limit set Highest in the ZIP: SCWA MATHER-SUNRISE · 30,825 people · 2018 | 1/2 | SYR4 |
| Tetrachloroethylene | 0.9400 µg/L 19% of the EPA limit 5 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 1/2 | SYR4 |
| Antimony, Total | 0.7325 µg/L 12% of the EPA limit 6 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 1/2 | SYR4 |
| Trichloroethylene | 0.6000 µg/L 12% of the EPA limit 5 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 1/2 | SYR4 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.0300 µg/L 15% of the EPA limit 0.2000 µg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2019 | 1/2 | SYR4 |
| PFOS | 0.0134 µg/L No EPA limit set Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2024 | 1/2 | UCMR-5 |
| PFHXS | 0.0109 µg/L No EPA limit set Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2024 | 1/2 | UCMR-5 |
| Pfba | 0.0090 µg/L No EPA limit set Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2024 | 1/2 | UCMR-5 |
| Mercury | 0.0086 µg/L 0.4% of the EPA limit 2 µg/L Highest in the ZIP: SCWA MATHER-SUNRISE · 30,825 people · 2019 | 1/2 | SYR4 |
| PFOA | 0.0082 µg/L No EPA limit set Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2024 | 1/2 | UCMR-5 |
| Pfpea | 0.0077 µg/L No EPA limit set Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2024 | 1/2 | UCMR-5 |
| Pfhxa | 0.0054 µg/L No EPA limit set Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2024 | 1/2 | UCMR-5 |
| Pfhpa | 0.0047 µg/L No EPA limit set Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CAL AM - SUBURBAN ROSEMONT · 54,793 people · 2025 | 2/2 | 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 95655
| Supplier | State | Population served |
|---|---|---|
| CAL AM - SUBURBAN ROSEMONT | CA | 54,793 |
| SCWA MATHER-SUNRISE | CA | 30,825 |
Frequently asked questions about ZIP 95655 tap water
Is the tap water in ZIP 95655 safe to drink?
EPA testing detected 26 contaminants across the water suppliers serving ZIP 95655. 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 95655?
2 public water suppliers report EPA drinking-water monitoring for ZIP 95655. Each is listed above with its population served.
What contaminants are in ZIP 95655's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.