Is City of Garden Grove Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: Orange

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
Pfpea	0.0086 µg/L	8/24	2025
Pfba	0.0146 µg/L	7/24	2025
Pfhxa	0.0054 µg/L	5/24	2025
PFHXS	0.0096 µg/L	5/24	2025
PFOS	0.0190 µg/L	5/24	2025
PFOA	0.0081 µg/L	4/24	2025

Other contaminants detected

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 this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
TTHM	25.1 µg/L 31% of the EPA limit 80 µg/L worst single sample: 25.4 µg/L	32/38	SYR4	2012–2019
Bromoform	14.65 µg/L No EPA limit set worst single sample: 16.7 µg/L	28/38	SYR4	2012–2019
Dibromochloromethane	9.0595 µg/L No EPA limit set worst single sample: 9.34 µg/L	24/38	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	23/23	LCR	2025
Bromodichloromethane	7.076 µg/L No EPA limit set worst single sample: 7.7 µg/L	17/38	SYR4	2012–2019
Chloroform	4.2425 µg/L No EPA limit set worst single sample: 4.7 µg/L	16/38	SYR4	2012–2019
Dibromoacetic Acid	5.2175 µg/L No EPA limit set worst single sample: 5.36 µg/L	16/40	SYR4	2017–2019
Total Haloacetic Acids (HAA5)	11.53 µg/L 19% of the EPA limit 60 µg/L worst single sample: 11.6 µg/L	15/40	SYR4	2017–2019
Dichloroacetic Acid	3.035 µg/L No EPA limit set worst single sample: 3.75 µg/L	14/40	SYR4	2017–2019
Trichloroacetic Acid	1.775 µg/L No EPA limit set worst single sample: 1.8 µg/L	11/40	SYR4	2017–2019
Monobromoacetic Acid	2.132 µg/L No EPA limit set worst single sample: 2.22 µg/L	9/40	SYR4	2017–2019
Lithium	34.7498 µg/L No EPA limit set	7/24	UCMR-5	2025
Monochloroacetic Acid	2.1758 µg/L No EPA limit set worst single sample: 2.59 µg/L	5/40	SYR4	2017–2019

25 contaminants tested, none detected

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Utility contact

Contact: KIM, SAMUEL
Phone: 714-741-5534
Email: [email protected]

Frequently asked questions about City of Garden Grove

Is City of Garden Grove tap water safe to drink?

EPA monitoring detected 19 contaminants in City of Garden Grove's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in City of Garden Grove's water?

EPA monitoring detected TTHM, Bromoform, Dibromochloromethane, Lead, Bromodichloromethane, and others. The full list with the level and data source for each is above.

How many people does City of Garden Grove serve?

City of Garden Grove reports serving 174,226 people in California, per its EPA record.

Has City of Garden Grove had any water quality violations?

The EPA has no formal drinking-water violations on file for City of Garden Grove.

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.