What was found in ZIP 90650
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 | 989500 µg/L 9895% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019 | 2/3 | SYR4 |
| Nitrate | 3400 µg/L 34% of the EPA limit 10000 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019
Highest in the ZIP: 8175 µg/L — GSWC - NORWALK · 43,167 people · 2019 | 3/3 | SYR4 |
| Fluoride | 3960 µg/L 99% of the EPA limit 4000 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019 | 3/3 | SYR4 |
| Barium | 281 µg/L 14% of the EPA limit 2000 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019 | 3/3 | SYR4 |
| Lithium | 88.6 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2024 | 3/3 | UCMR-5 |
| Copper | 59 µg/L 4.5% of the EPA limit 1300 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019 | 2/3 | SYR4 |
| Tetrachloroethylene | 0.6900 µg/L 14% of the EPA limit 5 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019
Highest in the ZIP: 55.55 µg/L — GSWC - NORWALK · 43,167 people · 2019 | 3/3 | SYR4 |
| TTHM | 43 µg/L 54% of the EPA limit 80 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019
Highest in the ZIP: 54.8 µg/L — GSWC - NORWALK · 43,167 people · 2019 | 3/3 | SYR4 |
| Trichloroethylene | 2.85 µg/L 57% of the EPA limit 5 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019
Highest in the ZIP: 40.6 µg/L — GSWC - NORWALK · 43,167 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 15 µg/L 25% of the EPA limit 60 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019
Highest in the ZIP: 24.9 µg/L — GSWC - NORWALK · 43,167 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 14 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019
Highest in the ZIP: 18 µg/L — GSWC - NORWALK · 43,167 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 14 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019
Highest in the ZIP: 15.6 µg/L — GSWC - NORWALK · 43,167 people · 2019 | 3/3 | SYR4 |
| Chloroform | 15 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019 | 3/3 | SYR4 |
| Combined Uranium | 14.4828 µg/L 48% of the EPA limit 30 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019 | 3/3 | SYR4 |
| 1,1-Dichloroethylene | 1.16 µg/L 17% of the EPA limit 7 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019
Highest in the ZIP: 14 µg/L — GSWC - NORWALK · 43,167 people · 2019 | 2/3 | SYR4 |
| Bromoform | 6.78 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019
Highest in the ZIP: 14 µg/L — GSWC - NORWALK · 43,167 people · 2019 | 3/3 | SYR4 |
| Selenium | 12 µg/L 24% of the EPA limit 50 µg/L Highest in the ZIP: GSWC - NORWALK · 43,167 people · 2018 | 1/3 | SYR4 |
| Dichloroacetic Acid | 6.94 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019
Highest in the ZIP: 11.35 µg/L — GSWC - NORWALK · 43,167 people · 2019 | 3/3 | SYR4 |
| Gross Beta Particle Activity | 7.9 pCi/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2017 | 1/3 | SYR4 |
| Trichloroacetic Acid | 7.555 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019 | 3/3 | SYR4 |
| cis-1,2-Dichloroethylene | 6.4 µg/L 9.1% of the EPA limit 70 µg/L Highest in the ZIP: GSWC - NORWALK · 43,167 people · 2019 | 1/3 | SYR4 |
| Chromium | 6.27 µg/L 6.3% of the EPA limit 100 µg/L Highest in the ZIP: GSWC - NORWALK · 43,167 people · 2018 | 1/3 | SYR4 |
| Dibromoacetic Acid | 3.715 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019
Highest in the ZIP: 5.655 µg/L — NORWALK - CITY, WATER DEPT. · 20,283 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 5.15 µg/L No EPA limit set Highest in the ZIP: GSWC - NORWALK · 43,167 people · 2019 | 1/3 | SYR4 |
| Arsenic | 2.7 µg/L 27% of the EPA limit 10 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019
Highest in the ZIP: 4.2 µg/L — GSWC - NORWALK · 43,167 people · 2018 | 3/3 | SYR4 |
| Monobromoacetic Acid | 2.5 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019 | 2/3 | SYR4 |
| 1,2-Dichloroethane | 1.8 µg/L 36% of the EPA limit 5 µg/L Highest in the ZIP: GSWC - NORWALK · 43,167 people · 2019 | 1/3 | SYR4 |
| Dichloromethane | 1.1 µg/L 22% of the EPA limit 5 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019 | 1/3 | SYR4 |
| 1,2-Dichloropropane | 0.8040 µg/L 16% of the EPA limit 5 µg/L Highest in the ZIP: GSWC - NORWALK · 43,167 people · 2019 | 1/3 | SYR4 |
| trans-1,2-Dichloroethylene | 0.5800 µg/L 0.6% of the EPA limit 100 µg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2019 | 1/3 | SYR4 |
| Mercury | 0.2100 µg/L 11% of the EPA limit 2 µg/L Highest in the ZIP: GSWC - NORWALK · 43,167 people · 2018 | 1/3 | SYR4 |
| PFOS | 0.0590 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2024 | 2/3 | UCMR-5 |
| Pfpea | 0.0170 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2024 | 3/3 | UCMR-5 |
| PFOA | 0.0160 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2024 | 2/3 | UCMR-5 |
| Pfhxa | 0.0100 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2024
Highest in the ZIP: 0.0130 µg/L — GSWC - NORWALK · 43,167 people · 2025 | 2/3 | UCMR-5 |
| PFHXS | 0.0110 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2024 | 2/3 | UCMR-5 |
| PFBS | 0.0089 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2024 | 1/3 | UCMR-5 |
| Pfba | 0.0087 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2024 | 3/3 | UCMR-5 |
| Pfhpa | 0.0039 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2024 | 1/3 | UCMR-5 |
| Lead | 0.0019 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: LIBERTY UTILITIES - BELLFLOWER-NORWALK · 72,624 people · 2025 | 3/3 | 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 90650
| Supplier | State | Population served |
|---|---|---|
| LIBERTY UTILITIES - BELLFLOWER-NORWALK | CA | 72,624 |
| GSWC - NORWALK | CA | 43,167 |
| NORWALK - CITY, WATER DEPT. | CA | 20,283 |
Frequently asked questions about ZIP 90650 tap water
Is the tap water in ZIP 90650 safe to drink?
EPA testing detected 40 contaminants across the water suppliers serving ZIP 90650. 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 90650?
3 public water suppliers report EPA drinking-water monitoring for ZIP 90650. Each is listed above with its population served.
What contaminants are in ZIP 90650's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Barium, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.