What was found in ZIP 95020
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 | 8588 µg/L 86% of the EPA limit 10000 µg/L Main supplier: CITY OF GILROY · 59,203 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 8460 µg/L 85% of the EPA limit 10000 µg/L Main supplier: CITY OF GILROY · 59,203 people · 2018 | 1/1 | SYR4 |
| Fluoride | 170 µg/L 4.3% of the EPA limit 4000 µg/L Main supplier: CITY OF GILROY · 59,203 people · 2018 | 1/1 | SYR4 |
| Barium | 140 µg/L 7% of the EPA limit 2000 µg/L Main supplier: CITY OF GILROY · 59,203 people · 2018 | 1/1 | SYR4 |
| TTHM | 11 µg/L 14% of the EPA limit 80 µg/L Main supplier: CITY OF GILROY · 59,203 people · 2019 | 1/1 | SYR4 |
| Lithium | 11 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2025 | 1/1 | UCMR-5 |
| Bromoform | 10.235 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 4.49 µg/L 7.5% of the EPA limit 60 µg/L Main supplier: CITY OF GILROY · 59,203 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 3.69 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2.91 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2019 | 1/1 | SYR4 |
| Tetrachloroethylene | 2.7 µg/L 54% of the EPA limit 5 µg/L Main supplier: CITY OF GILROY · 59,203 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 1.9 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 1.7725 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2019 | 1/1 | SYR4 |
| PFBS | 0.0094 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2025 | 1/1 | UCMR-5 |
| PFOA | 0.0080 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2025 | 1/1 | UCMR-5 |
| Pfpea | 0.0078 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0070 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2025 | 1/1 | UCMR-5 |
| PFOS | 0.0058 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2025 | 1/1 | UCMR-5 |
| Pfhpa | 0.0036 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2025 | 1/1 | UCMR-5 |
| PFHXS | 0.0035 µg/L No EPA limit set Main supplier: CITY OF GILROY · 59,203 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: CITY OF GILROY · 59,203 people · 2024 | 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 95020
| Supplier | State | Population served |
|---|---|---|
| CITY OF GILROY | CA | 59,203 |
Frequently asked questions about ZIP 95020 tap water
Is the tap water in ZIP 95020 safe to drink?
EPA testing detected 21 contaminants across the water suppliers serving ZIP 95020. 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 95020?
1 public water supplier report EPA drinking-water monitoring for ZIP 95020. Each is listed above with its population served.
What contaminants are in ZIP 95020's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Barium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.