Is City of Fullerton Tap Water Safe? Quality Report

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

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2017-12-01 → 2017-12-31
MCL	Health-based	Resolved	2017-12-01 → 2017-12-31
MCL	Health-based	Resolved	1992-09-01 → 1992-09-30
MCL	Health-based	Resolved	1992-09-01 → 1992-09-30
MR	Monitoring	Resolved	2012-10-01 → 2012-12-31
MR	Monitoring	Resolved	2012-10-01 → 2012-12-31
MR	Monitoring	Resolved	2012-10-01 → 2012-12-31
MR	Monitoring	Resolved	2012-10-01 → 2012-12-31

PFAS detected

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

Contaminant	Max	Detection rate	Period
Pfhxa	0.0124 µg/L	4/15	2025
Pfpea	0.0132 µg/L	4/15	2025
Pfba	0.0059 µg/L	3/15	2025
PFBS	0.0076 µg/L	3/15	2025
Pfhpa	0.0048 µg/L	3/15	2025
PFHXS	0.0062 µg/L	3/15	2025
PFOA	0.0108 µg/L	3/15	2025
PFOS	0.0133 µg/L	3/15	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
Nitrate	4791.2 µg/L 48% of the EPA limit 10000 µg/L worst single sample: 5582.2 µg/L	382/382	SYR4	2012–2019
Tetrachloroethylene	2 µg/L 40% of the EPA limit 5 µg/L worst single sample: 4 µg/L	244/664	SYR4	2012–2019
Trichloroethylene	2 µg/L 40% of the EPA limit 5 µg/L worst single sample: 2.5 µg/L	240/664	SYR4	2012–2019
Bromodichloromethane	14.165 µg/L No EPA limit set worst single sample: 18.3 µg/L	208/208	SYR4	2012–2019
Chloroform	15.23 µg/L No EPA limit set worst single sample: 28.2 µg/L	208/208	SYR4	2012–2019
Dibromochloromethane	15.665 µg/L No EPA limit set worst single sample: 18.3 µg/L	208/208	SYR4	2012–2019
TTHM	46.53 µg/L 58% of the EPA limit 80 µg/L worst single sample: 55.6 µg/L	208/208	SYR4	2012–2019
Bromoform	7.9 µg/L No EPA limit set worst single sample: 10.5 µg/L	204/208	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	19.671 µg/L 33% of the EPA limit 60 µg/L worst single sample: 26.36 µg/L	200/208	SYR4	2012–2019
Dibromoacetic Acid	5.016 µg/L No EPA limit set worst single sample: 6.7 µg/L	197/208	SYR4	2012–2019
Dichloroacetic Acid	10.662 µg/L No EPA limit set worst single sample: 14.6 µg/L	175/208	SYR4	2012–2019
Trichloroacetic Acid	7.088 µg/L No EPA limit set worst single sample: 8.92 µg/L	117/208	SYR4	2012–2019
Nitrate-Nitrite	4201 µg/L 42% of the EPA limit 10000 µg/L worst single sample: 5250 µg/L	87/87	SYR4	2015–2019
1,1-Dichloroethylene	1.77 µg/L 25% of the EPA limit 7 µg/L worst single sample: 1.8 µg/L	47/664	SYR4	2012–2019
Fluoride	611 µg/L 15% of the EPA limit 4000 µg/L worst single sample: 650 µg/L	30/30	SYR4	2013–2019
Combined Uranium	12.0116 µg/L 40% of the EPA limit 30 µg/L worst single sample: 17.433 µg/L	20/20	SYR4	2014–2018
Lead	0.0015 mg/L 10% of the EPA limit 0.0150 mg/L	18/18	LCR	2024
Monochloroacetic Acid	6.676 µg/L No EPA limit set worst single sample: 7.04 µg/L	8/208	SYR4	2012–2019
Lithium	34.9834 µg/L No EPA limit set	6/15	UCMR-5	2025
Selenium	9.98 µg/L 20% of the EPA limit 50 µg/L worst single sample: 10.3 µg/L	3/33	SYR4	2013–2019
Arsenic	2 µg/L 20% of the EPA limit 10 µg/L	1/33	SYR4	2013–2019

56 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBariumBenzeneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneEthylene DibromideEthylbenzeneHfpo-DaLassoLeadMercuryMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitritePfdaPfdoaPfeesaPfhpsPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaSimazineStyreneThallium, TotalTolueneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: BISE, STEPHEN
Phone: 714-738-6852
Email: [email protected]

Frequently asked questions about City of Fullerton

Is City of Fullerton tap water safe to drink?

EPA monitoring detected 29 contaminants in City of Fullerton'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 Fullerton's water?

EPA monitoring detected Nitrate, Tetrachloroethylene, Trichloroethylene, Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.

How many people does City of Fullerton serve?

City of Fullerton reports serving 139,461 people in California, per its EPA record.

Has City of Fullerton had any water quality violations?

The EPA has 8 violations on file for City of Fullerton, of which 4 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.