Is Lynwood-City, Water Dept. Tap Water Safe? Quality Report

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MR	Monitoring	Resolved	2018-02-01 → 2018-03-31
MR	Monitoring	Resolved	2018-02-01 → 2018-03-31
MR	Monitoring	Resolved	2014-01-01 → 2014-03-31
MR	Monitoring	Resolved	2014-01-01 → 2014-03-31
MR	Monitoring	Resolved	2014-01-01 → 2014-03-31
MR	Monitoring	Resolved	2014-01-01 → 2014-03-31
MR	Monitoring	Resolved	2006-01-01
MR	Monitoring	Resolved	2006-01-01
MR	Monitoring	Resolved	2003-01-01
MR	Monitoring	Resolved	2003-01-01

PFAS detected

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

Contaminant	Max	Detection rate	Period
PFOS	0.0230 µg/L	8/14	2025
PFHXS	0.0061 µg/L	6/14	2025
PFOA	0.0078 µg/L	6/14	2025
Pfpea	0.0033 µg/L	2/14	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
TTHM	37.64 µg/L 47% of the EPA limit 80 µg/L worst single sample: 51.2 µg/L	233/256	SYR4	2012–2019
Dibromochloromethane	13.25 µg/L No EPA limit set worst single sample: 17.5 µg/L	231/256	SYR4	2012–2019
Bromoform	6.94 µg/L No EPA limit set worst single sample: 11.6 µg/L	213/256	SYR4	2012–2019
Bromodichloromethane	11.6 µg/L No EPA limit set worst single sample: 15.6 µg/L	172/256	SYR4	2012–2019
Tetrachloroethylene	4.255 µg/L 85% of the EPA limit 5 µg/L worst single sample: 7.4 µg/L	150/178	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	13.21 µg/L 22% of the EPA limit 60 µg/L worst single sample: 18 µg/L	88/248	SYR4	2012–2019
Chloroform	10.835 µg/L No EPA limit set worst single sample: 15.2 µg/L	84/255	SYR4	2012–2019
Nitrate	2000 µg/L 20% of the EPA limit 10000 µg/L worst single sample: 2400 µg/L	82/88	SYR4	2012–2019
Dibromoacetic Acid	4.725 µg/L No EPA limit set worst single sample: 6.3 µg/L	80/248	SYR4	2012–2019
Dichloroacetic Acid	6.96 µg/L No EPA limit set worst single sample: 7.9 µg/L	53/248	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	38/38	LCR	2024
Trichloroethylene	6.24 µg/L 125% of the EPA limit, at the 95th percentile of samples — 5 µg/L worst single sample: 6.9 µg/L	25/64	SYR4	2012–2019
Trichloroacetic Acid	4.1 µg/L No EPA limit set worst single sample: 4.2 µg/L	21/248	SYR4	2012–2019
Fluoride	400 µg/L 10% of the EPA limit 4000 µg/L	17/17	SYR4	2012–2019
Arsenic	4.87 µg/L 49% of the EPA limit 10 µg/L worst single sample: 5 µg/L	14/14	SYR4	2012–2019
Barium	143.5 µg/L 7.2% of the EPA limit 2000 µg/L worst single sample: 150 µg/L	14/14	SYR4	2012–2019
Combined Uranium	6.42935 µg/L 21% of the EPA limit 30 µg/L worst single sample: 7.003 µg/L	8/9	SYR4	2012–2018
Lithium	49 µg/L No EPA limit set	4/14	UCMR-5	2025
1,1-Dichloroethylene	0.6200 µg/L 8.9% of the EPA limit 7 µg/L	1/46	SYR4	2012–2019
Copper	210 µg/L 16% of the EPA limit 1300 µg/L	1/24	SYR4	2012–2019
Chromium	12 µg/L 12% of the EPA limit 100 µg/L	1/14	SYR4	2012–2019
Nitrate-Nitrite	730000 µg/L 7300% of the EPA limit, at the 95th percentile of samples — 10000 µg/L	1/1	SYR4	2012

85 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,2,4-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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: ANSARI, AHMAD R.
Phone: 310-603-0220
Email: [email protected]

Frequently asked questions about Lynwood-City, Water Dept.

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

EPA monitoring detected 26 contaminants in Lynwood-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 Lynwood-City, Water Dept.'s water?

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

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

Lynwood-City, Water Dept. reports serving 66,967 people in California, per its EPA record.

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

The EPA has 13 violations on file for Lynwood-City, Water Dept., 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.