What was found in ZIP 90740
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 |
|---|---|---|---|
| Fluoride | 520.5 µg/L 13% of the EPA limit 4000 µg/L Main supplier: CITY OF SEAL BEACH · 24,937 people · 2018 | 1/1 | SYR4 |
| Monochloroacetic Acid | 88.44 µg/L No EPA limit set Main supplier: CITY OF SEAL BEACH · 24,937 people · 2019 | 1/1 | SYR4 |
| TTHM | 37.56 µg/L 47% of the EPA limit 80 µg/L Main supplier: CITY OF SEAL BEACH · 24,937 people · 2019 | 1/1 | SYR4 |
| Lithium | 35.4811 µg/L No EPA limit set Main supplier: CITY OF SEAL BEACH · 24,937 people · 2025 | 1/1 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 24.015 µg/L 40% of the EPA limit 60 µg/L Main supplier: CITY OF SEAL BEACH · 24,937 people · 2019 | 1/1 | SYR4 |
| Chloroform | 19.72 µg/L No EPA limit set Main supplier: CITY OF SEAL BEACH · 24,937 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 10.54 µg/L No EPA limit set Main supplier: CITY OF SEAL BEACH · 24,937 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 10.48 µg/L No EPA limit set Main supplier: CITY OF SEAL BEACH · 24,937 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 7.779 µg/L No EPA limit set Main supplier: CITY OF SEAL BEACH · 24,937 people · 2019 | 1/1 | SYR4 |
| Bromoform | 7.6465 µg/L No EPA limit set Main supplier: CITY OF SEAL BEACH · 24,937 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 6.518 µg/L No EPA limit set Main supplier: CITY OF SEAL BEACH · 24,937 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 5.16732 µg/L 17% of the EPA limit 30 µg/L Main supplier: CITY OF SEAL BEACH · 24,937 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 5.02 µg/L No EPA limit set Main supplier: CITY OF SEAL BEACH · 24,937 people · 2019 | 1/1 | SYR4 |
| Arsenic | 2.34 µg/L 23% of the EPA limit 10 µg/L Main supplier: CITY OF SEAL BEACH · 24,937 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 0.3615 pCi/L 7.2% of the EPA limit 5 pCi/L Main supplier: CITY OF SEAL BEACH · 24,937 people · 2012 | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF SEAL BEACH · 24,937 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 90740
| Supplier | State | Population served |
|---|---|---|
| CITY OF SEAL BEACH | CA | 24,937 |
Frequently asked questions about ZIP 90740 tap water
Is the tap water in ZIP 90740 safe to drink?
EPA testing detected 16 contaminants across the water suppliers serving ZIP 90740. 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 90740?
1 public water supplier report EPA drinking-water monitoring for ZIP 90740. Each is listed above with its population served.
What contaminants are in ZIP 90740's water?
EPA monitoring detected Fluoride, Monochloroacetic Acid, TTHM, Lithium, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.