← California

Tap water quality report

Suburban Water Systems-La Mirada

EPA monitoring tested this supplier for 81 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

81
contaminants tested
20
detected
56,793
people served
0
health-based violations
Water source
SWP
Ownership
Private
Counties served
Los Angeles

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).
ContaminantMaxDetection ratePeriod
Pfba 0.0095 µg/L 2/5 2025
PFBS 0.0042 µg/L 2/5 2025
PFOA 0.0070 µg/L 2/5 2025
PFOS 0.0160 µg/L 2/5 2025
PFHXS 0.0038 µg/L 1/5 2025
Pfpea 0.0035 µg/L 1/5 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
Bromoform
7.4 µg/L
No EPA limit set
worst single sample: 11 µg/L
124/124 SYR4 2012–2019
Dibromochloromethane
18 µg/L
No EPA limit set
worst single sample: 22 µg/L
124/124 SYR4 2012–2019
TTHM
67.85 µg/L 85%
of the EPA limit 80 µg/L
worst single sample: 73 µg/L
124/124 SYR4 2012–2019
Bromodichloromethane
20 µg/L
No EPA limit set
worst single sample: 22 µg/L
123/124 SYR4 2012–2019
Dibromoacetic Acid
4.2 µg/L
No EPA limit set
worst single sample: 4.9 µg/L
121/124 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
18 µg/L 30%
of the EPA limit 60 µg/L
worst single sample: 26 µg/L
121/124 SYR4 2012–2019
Chloroform
26 µg/L
No EPA limit set
worst single sample: 28 µg/L
118/124 SYR4 2012–2019
Dichloroacetic Acid
7.035 µg/L
No EPA limit set
worst single sample: 7.5 µg/L
114/124 SYR4 2012–2019
Trichloroacetic Acid
8.1 µg/L
No EPA limit set
worst single sample: 16 µg/L
112/124 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
39/39 LCR 2025
Arsenic
4.74 µg/L 47%
of the EPA limit 10 µg/L
worst single sample: 4.9 µg/L
5/5 SYR4 2012–2018
Fluoride
578 µg/L 14%
of the EPA limit 4000 µg/L
worst single sample: 590 µg/L
5/5 SYR4 2012–2018
Combined Uranium
3.86655 µg/L 13%
of the EPA limit 30 µg/L
worst single sample: 3.874 µg/L
2/3 SYR4 2012–2018
Lithium
17 µg/L
No EPA limit set
2/5 UCMR-5 2025
61 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalBariumBenzeneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneDi(2-ethylhexyl) PhthalateEthylbenzeneHfpo-DaLeadMercuryMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitrateNitrate-NitriteNitritePfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
DIMAGGIO, PAUL
Phone
626-543-2532
Email
[email protected]

Frequently asked questions about Suburban Water Systems-La Mirada

Is Suburban Water Systems-La Mirada tap water safe to drink?

EPA monitoring detected 20 contaminants in Suburban Water Systems-La Mirada'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 Suburban Water Systems-La Mirada's water?

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

How many people does Suburban Water Systems-La Mirada serve?

Suburban Water Systems-La Mirada reports serving 56,793 people in California, per its EPA record.

Has Suburban Water Systems-La Mirada had any water quality violations?

The EPA has no formal drinking-water violations on file for Suburban Water Systems-La Mirada.

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.