Is California Water Service Co. - Herm/Redo Tap Water Safe? Quality Report

Water source: SWP
Ownership: Private
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
MCL	Health-based	Resolved	1995-08-01 → 1995-08-31
MCL	Health-based	Resolved	1995-08-01 → 1995-08-31
MCL	Health-based	Resolved	1995-07-01 → 1995-07-31
MCL	Health-based	Resolved	1995-07-01 → 1995-07-31
MCL	Health-based	Resolved	1995-07-01 → 1995-07-31
MCL	Health-based	Resolved	1995-07-01 → 1995-07-31
MCL	Health-based	Resolved	1995-06-01 → 1995-06-30
MCL	Health-based	Resolved	1995-06-01 → 1995-06-30

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
Fluoride	885.5 µg/L 22% of the EPA limit 4000 µg/L worst single sample: 1010 µg/L	459/459	SYR4	2012–2019
Bromodichloromethane	13.44 µg/L No EPA limit set worst single sample: 30 µg/L	252/257	SYR4	2012–2019
Bromoform	9.6205 µg/L No EPA limit set worst single sample: 14 µg/L	252/257	SYR4	2012–2019
Chloroform	18.066 µg/L No EPA limit set worst single sample: 26 µg/L	252/257	SYR4	2012–2019
Dibromochloromethane	14.452 µg/L No EPA limit set worst single sample: 26 µg/L	252/257	SYR4	2012–2019
TTHM	47.315 µg/L 59% of the EPA limit 80 µg/L worst single sample: 87 µg/L	252/257	SYR4	2012–2019
Dibromoacetic Acid	6.96 µg/L No EPA limit set worst single sample: 9.5 µg/L	249/249	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	23.6 µg/L 39% of the EPA limit 60 µg/L worst single sample: 28 µg/L	249/249	SYR4	2012–2019
Dichloroacetic Acid	14 µg/L No EPA limit set worst single sample: 16 µg/L	242/249	SYR4	2012–2019
Trichloroacetic Acid	6.035 µg/L No EPA limit set worst single sample: 9.6 µg/L	194/249	SYR4	2012–2019
Lead	0.0014 mg/L 9.3% of the EPA limit 0.0150 mg/L	32/32	LCR	2023
Nitrate	730 µg/L 7.3% of the EPA limit 10000 µg/L	20/42	SYR4	2012–2019
Combined Uranium	17.135 µg/L 57% of the EPA limit 30 µg/L worst single sample: 17.88 µg/L	11/14	SYR4	2012–2018
Monobromoacetic Acid	1.84 µg/L No EPA limit set worst single sample: 2.2 µg/L	10/249	SYR4	2012–2019
Monochloroacetic Acid	2.95 µg/L No EPA limit set worst single sample: 3.1 µg/L	7/249	SYR4	2012–2019
Barium	247.5 µg/L 12% of the EPA limit 2000 µg/L worst single sample: 280 µg/L	6/9	SYR4	2012–2018
Selenium	9.125 µg/L 18% of the EPA limit 50 µg/L worst single sample: 9.7 µg/L	6/10	SYR4	2012–2018
Lithium	62.5 µg/L No EPA limit set	6/6	UCMR-5	2025
Arsenic	3.09045 µg/L 31% of the EPA limit 10 µg/L worst single sample: 3.2 µg/L	2/10	SYR4	2012–2018
Copper	42.6548 µg/L 3.3% of the EPA limit 1300 µg/L worst single sample: 44.57 µg/L	2/92	SYR4	2012–2018
Antimony, Total	0.0360 µg/L 0.6% of the EPA limit 6 µg/L	1/10	SYR4	2012–2018
Beryllium, Total	0.0020 µg/L 0.1% of the EPA limit 4 µg/L	1/10	SYR4	2012–2018
Cadmium	0.0070 µg/L 0.1% of the EPA limit 5 µg/L	1/10	SYR4	2012–2018
Chromium	1.14 µg/L 1.1% of the EPA limit 100 µg/L	1/10	SYR4	2012–2018
Gross Beta Particle Activity	10 pCi/L No EPA limit set	1/1	SYR4	2018
Lead	0.7370 µg/L 4.9% of the EPA limit 15 µg/L	1/10	SYR4	2012–2018
Nitrate-Nitrite	730 µg/L 7.3% of the EPA limit 10000 µg/L	1/6	SYR4	2014–2018

85 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-PF3ONSAdonaAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: JAMES, SOPHIE
Phone: 408-367-8593
Email: [email protected]

Frequently asked questions about California Water Service Co. - Herm/Redo

Is California Water Service Co. - Herm/Redo tap water safe to drink?

EPA monitoring detected 27 contaminants in California Water Service Co. - Herm/Redo'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 California Water Service Co. - Herm/Redo's water?

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

How many people does California Water Service Co. - Herm/Redo serve?

California Water Service Co. - Herm/Redo reports serving 96,853 people in California, per its EPA record.

Has California Water Service Co. - Herm/Redo had any water quality violations?

The EPA has 8 violations on file for California Water Service Co. - Herm/Redo, of which 8 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.