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Tap water quality report

City of Seal Beach

EPA monitoring tested this supplier for 109 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
16
detected
24,937
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
4
violations on file
0
still open
ViolationTypeStatusPeriod
MON Monitoring Resolved 2020-01-01 → 2020-01-31
MON Monitoring Resolved 2020-01-01 → 2020-01-31
MR Monitoring Resolved 2020-01-01
MR Monitoring Resolved 2020-01-01

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
10.48 µg/L
No EPA limit set
worst single sample: 14.4 µg/L
89/89 SYR4 2013–2019
Chloroform
19.72 µg/L
No EPA limit set
worst single sample: 24.6 µg/L
89/89 SYR4 2013–2019
Dibromochloromethane
10.54 µg/L
No EPA limit set
worst single sample: 12.5 µg/L
89/89 SYR4 2013–2019
TTHM
37.56 µg/L 47%
of the EPA limit 80 µg/L
worst single sample: 48.5 µg/L
89/89 SYR4 2013–2019
Dichloroacetic Acid
7.779 µg/L
No EPA limit set
worst single sample: 11.7 µg/L
82/90 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
24.015 µg/L 40%
of the EPA limit 60 µg/L
worst single sample: 114 µg/L
82/90 SYR4 2013–2019
Bromoform
7.6465 µg/L
No EPA limit set
worst single sample: 11.2 µg/L
70/89 SYR4 2013–2019
Trichloroacetic Acid
6.518 µg/L
No EPA limit set
worst single sample: 10.2 µg/L
58/90 SYR4 2013–2019
Dibromoacetic Acid
5.02 µg/L
No EPA limit set
worst single sample: 5.8 µg/L
53/90 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 28/28 LCR 2024
Fluoride
520.5 µg/L 13%
of the EPA limit 4000 µg/L
worst single sample: 570 µg/L
12/12 SYR4 2012–2018
Combined Uranium
5.16732 µg/L 17%
of the EPA limit 30 µg/L
worst single sample: 6.4815 µg/L
10/12 SYR4 2012–2019
Monochloroacetic Acid
88.44 µg/L
No EPA limit set
worst single sample: 107 µg/L
9/90 SYR4 2013–2019
Arsenic
2.34 µg/L 23%
of the EPA limit 10 µg/L
worst single sample: 2.4 µg/L
4/31 SYR4 2012–2019
Lithium
35.4811 µg/L
No EPA limit set
 3/10 UCMR-5 2025
Combined Radium (-226 And -228)
0.3615 pCi/L 7.2%
of the EPA limit 5 pCi/L
worst single sample: 0.3650 pCi/L
2/2 SYR4 2012
93 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-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitrateNitrate-NitriteNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
LOW, SEAN C.
Phone
592-370-3928
Email
[email protected]

Frequently asked questions about City of Seal Beach

Is City of Seal Beach tap water safe to drink?

EPA monitoring detected 16 contaminants in City of Seal Beach'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 Seal Beach's water?

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

How many people does City of Seal Beach serve?

City of Seal Beach reports serving 24,937 people in California, per its EPA record.

Has City of Seal Beach had any water quality violations?

The EPA has 4 violations on file for City of Seal Beach, 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.