What was found in ZIP 92840
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 |
|---|---|---|---|
| Lithium | 34.7498 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2025 | 1/1 | UCMR-5 |
| TTHM | 25.1 µg/L 31% of the EPA limit 80 µg/L Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2019 | 1/1 | SYR4 |
| Bromoform | 14.65 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 11.53 µg/L 19% of the EPA limit 60 µg/L Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 9.0595 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 7.076 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 5.2175 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2019 | 1/1 | SYR4 |
| Chloroform | 4.2425 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 3.035 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 2.1758 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 2.132 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 1.775 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2019 | 1/1 | SYR4 |
| PFOS | 0.0190 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2025 | 1/1 | UCMR-5 |
| Pfba | 0.0146 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2025 | 1/1 | UCMR-5 |
| PFHXS | 0.0096 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2025 | 1/1 | UCMR-5 |
| Pfpea | 0.0086 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2025 | 1/1 | UCMR-5 |
| PFOA | 0.0081 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0054 µg/L No EPA limit set Main supplier: CITY OF GARDEN GROVE · 174,226 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF GARDEN GROVE · 174,226 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 92840
| Supplier | State | Population served |
|---|---|---|
| CITY OF GARDEN GROVE | CA | 174,226 |
Frequently asked questions about ZIP 92840 tap water
Is the tap water in ZIP 92840 safe to drink?
EPA testing detected 19 contaminants across the water suppliers serving ZIP 92840. 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 92840?
1 public water supplier report EPA drinking-water monitoring for ZIP 92840. Each is listed above with its population served.
What contaminants are in ZIP 92840's water?
EPA monitoring detected Lithium, TTHM, Bromoform, Total Haloacetic Acids (HAA5), Dibromochloromethane, and others across this ZIP's suppliers. The full list with levels and sources is above.