Tap WaterIndex

← California

Tap water quality report

Lomita-City, Water Dept.

EPA monitoring tested this supplier for 111 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

111
contaminants tested
19
detected
20,256
people served
2
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
SWP
Ownership
Local government
Counties served
Los Angeles

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.

2
health-based violations
4
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2016-04-01 → 2016-06-30
MCL Health-based Resolved 2016-04-01 → 2016-06-30
MR Monitoring Resolved 2018-07-01 → 2019-03-31
MR Monitoring Resolved 2018-07-01 → 2019-03-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFHXS 0.0041 µg/L 1/2 2025
PFOS 0.0043 µg/L 1/2 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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
17.6 µg/L
No EPA limit set
worst single sample: 23.1 µg/L
200/200 SYR4 2012–2019
TTHM
66.5 µg/L 83%
of the EPA limit 80 µg/L
worst single sample: 92.3 µg/L
200/200 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
21.125 µg/L 35%
of the EPA limit 60 µg/L
worst single sample: 27.4 µg/L
200/200 SYR4 2012–2019
Bromoform
19.65 µg/L
No EPA limit set
worst single sample: 23.8 µg/L
199/200 SYR4 2012–2019
Dibromochloromethane
25.4 µg/L
No EPA limit set
worst single sample: 34.9 µg/L
196/200 SYR4 2012–2019
Chloroform
12.45 µg/L
No EPA limit set
worst single sample: 17.9 µg/L
191/200 SYR4 2012–2019
Dichloroacetic Acid
7.76 µg/L
No EPA limit set
worst single sample: 10.3 µg/L
168/168 SYR4 2014–2019
Dibromoacetic Acid
9.135 µg/L
No EPA limit set
worst single sample: 10.5 µg/L
154/168 SYR4 2014–2019
Trichloroacetic Acid
6.712 µg/L
No EPA limit set
worst single sample: 9.56 µg/L
117/168 SYR4 2014–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 41/41 LCR 2023
Monobromoacetic Acid
1.57 µg/L
No EPA limit set
worst single sample: 1.6 µg/L
7/168 SYR4 2014–2019
Benzene
3.65 µg/L 73%
of the EPA limit 5 µg/L
worst single sample: 3.7 µg/L
3/10 SYR4 2012–2019
Fluoride
384.6 µg/L 9.6%
of the EPA limit 4000 µg/L
worst single sample: 390 µg/L
3/3 SYR4 2013–2019
Combined Uranium
3.49859 µg/L 12%
of the EPA limit 30 µg/L
worst single sample: 3.5 µg/L
2/10 SYR4 2012–2013
Monochloroacetic Acid
4.6 µg/L
No EPA limit set
worst single sample: 4.7 µg/L
2/168 SYR4 2014–2019
Lithium
67.4 µg/L
No EPA limit set
 2/2 UCMR-5 2025
Copper
70.8 µg/L 5.4%
of the EPA limit 1300 µg/L
 1/3 SYR4 2013–2019
92 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitrateNitrate-NitriteNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
FRALEY, DEANNA
Phone
310-325-7110
Email
d.fraley@lomitacity.com

Frequently asked questions about Lomita-City, Water Dept.

Is Lomita-City, Water Dept. tap water safe to drink?

EPA monitoring detected 19 contaminants in Lomita-City, Water Dept.'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 Lomita-City, Water Dept.'s water?

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

How many people does Lomita-City, Water Dept. serve?

Lomita-City, Water Dept. reports serving 20,256 people in California, per its EPA record.

Has Lomita-City, Water Dept. had any water quality violations?

The EPA has 4 violations on file for Lomita-City, Water Dept., of which 2 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.