What was found in Garden Grove's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every 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 |
Water suppliers serving Garden Grove
| Supplier | Population served |
|---|---|
| CITY OF GARDEN GROVE | 174,226 |
Frequently asked questions about Garden Grove tap water
Is Garden Grove tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Garden Grove. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Garden Grove?
1 public water supplier report drinking-water monitoring for Garden Grove, California to the EPA. Each is listed above with its population served.
What contaminants are in Garden Grove's water?
The contaminants EPA monitoring detected in Garden Grove include Lithium, TTHM, Bromoform, Total Haloacetic Acids (HAA5), Dibromochloromethane. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.