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Tap water quality report

City of Fountain Valley

EPA monitoring tested this supplier for 110 contaminants and detected 22. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

110
contaminants tested
22
detected
56,747
people served
0
health-based violations
California rankingsLead in CaliforniaPFAS in California
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.

0
health-based violations
8
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2017-01-01 → 2017-03-31
MR Monitoring Resolved 2017-01-01 → 2017-03-31
MR Monitoring Resolved 2017-01-01 → 2017-03-31
MR Monitoring Resolved 2017-01-01 → 2017-03-31
MR Monitoring Resolved 2014-09-01 → 2014-09-30
MR Monitoring Resolved 2014-09-01 → 2014-09-30
MR Monitoring Resolved 2014-02-01 → 2014-02-28
MR Monitoring Resolved 2014-02-01 → 2014-02-28

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFHXS 0.0035 µg/L 1/16 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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
55.5 µg/L 69%
of the EPA limit 80 µg/L
 222/256 SYR4 2012–2019
Bromoform
19.2 µg/L
No EPA limit set
 221/256 SYR4 2012–2019
Dibromochloromethane
20.9 µg/L
No EPA limit set
 162/256 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
21.3 µg/L 36%
of the EPA limit 60 µg/L
 152/256 SYR4 2012–2019
Nitrate
2460 µg/L 25%
of the EPA limit 10000 µg/L
 148/150 SYR4 2012–2019
Dibromoacetic Acid
6.9 µg/L
No EPA limit set
 143/256 SYR4 2012–2019
Bromodichloromethane
17.6 µg/L
No EPA limit set
 128/256 SYR4 2012–2019
Chloroform
18.6 µg/L
No EPA limit set
 126/256 SYR4 2012–2019
Dichloroacetic Acid
10.2 µg/L
No EPA limit set
 116/256 SYR4 2012–2019
Trichloroacetic Acid
6.7 µg/L
No EPA limit set
 89/256 SYR4 2012–2019
Fluoride
960 µg/L 24%
of the EPA limit 4000 µg/L
 68/68 SYR4 2012–2019
Nitrate-Nitrite
940000 µg/L 9400%
of the EPA limit, in the worst sample — 10000 µg/L
 53/54 SYR4 2012–2019
Combined Uranium
15.049 µg/L 50%
of the EPA limit 30 µg/L
 32/32 SYR4 2012–2019
Lead
0.0060 mg/L 40%
of the EPA limit 0.0150 mg/L
 19/19 LCR 2024
Combined Radium (-226 And -228)
1.251 pCi/L 25%
of the EPA limit 5 pCi/L
 15/16 SYR4 2012–2013
Gross Beta Particle Activity
4.62 pCi/L
No EPA limit set
 13/14 SYR4 2012–2013
Copper
162 µg/L 12%
of the EPA limit 1300 µg/L
 5/62 SYR4 2012–2019
Arsenic
2.5 µg/L 25%
of the EPA limit 10 µg/L
 3/52 SYR4 2012–2019
Lithium
36.1233 µg/L
No EPA limit set
 3/16 UCMR-5 2025
Barium
105 µg/L 5.3%
of the EPA limit 2000 µg/L
 2/50 SYR4 2012–2019
Monochloroacetic Acid
3.5 µg/L
No EPA limit set
 1/256 SYR4 2012–2019
88 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SPRAGUE, MARK
Phone
714-593-4609
Email
mark.sprague@fountainvalley.org

Frequently asked questions about City of Fountain Valley

Is City of Fountain Valley tap water safe to drink?

EPA monitoring detected 22 contaminants in City of Fountain Valley'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 Fountain Valley's water?

EPA monitoring detected TTHM, Bromoform, Dibromochloromethane, Total Haloacetic Acids (HAA5), Nitrate, and others. The full list with the level and data source for each is above.

How many people does City of Fountain Valley serve?

City of Fountain Valley reports serving 56,747 people in California, per its EPA record.

Has City of Fountain Valley had any water quality violations?

The EPA has 8 violations on file for City of Fountain Valley, of which 0 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.