Is Quartz Hill Water Dist. 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
MCL	Health-based	Resolved	1995-11-01 → 1995-11-30
MCL	Health-based	Resolved	1995-11-01 → 1995-11-30
Other	Monitoring	Resolved	1999-06-01 → 1999-06-30
Other	Monitoring	Resolved	1999-06-01 → 1999-06-30

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
Nitrate	8814 µg/L 88% of the EPA limit 10000 µg/L worst single sample: 9492 µg/L	308/310	SYR4	2012–2019
Bromodichloromethane	19.815 µg/L No EPA limit set worst single sample: 29.7 µg/L	124/124	SYR4	2012–2019
Bromoform	28.895 µg/L No EPA limit set worst single sample: 37.4 µg/L	124/124	SYR4	2012–2019
TTHM	84.185 µg/L 105% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 114.7 µg/L	124/124	SYR4	2012–2019
Dibromoacetic Acid	13.84 µg/L No EPA limit set worst single sample: 15.2 µg/L	123/124	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	19.74 µg/L 33% of the EPA limit 60 µg/L worst single sample: 24.5 µg/L	123/124	SYR4	2012–2019
Dibromochloromethane	37.57 µg/L No EPA limit set worst single sample: 51.8 µg/L	119/124	SYR4	2012–2019
Dichloroacetic Acid	5.86 µg/L No EPA limit set worst single sample: 10.6 µg/L	92/124	SYR4	2012–2019
Chloroform	11.18 µg/L No EPA limit set worst single sample: 22.3 µg/L	87/124	SYR4	2012–2019
Monobromoacetic Acid	1.65 µg/L No EPA limit set worst single sample: 1.9 µg/L	56/124	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	40/40	LCR	2025
Arsenic	16.65 µg/L 166% of the EPA limit, at the 95th percentile of samples — 10 µg/L worst single sample: 55 µg/L	30/30	SYR4	2013–2019
Fluoride	816.5 µg/L 20% of the EPA limit 4000 µg/L worst single sample: 870 µg/L	30/30	SYR4	2013–2019
Combined Uranium	11.0037 µg/L 37% of the EPA limit 30 µg/L worst single sample: 11.175 µg/L	24/27	SYR4	2013–2019
Trichloroacetic Acid	9.7 µg/L No EPA limit set worst single sample: 9.9 µg/L	21/124	SYR4	2012–2019
Nitrate-Nitrite	736000 µg/L 7360% of the EPA limit, at the 95th percentile of samples — 10000 µg/L worst single sample: 760000 µg/L	13/14	SYR4	2013–2019
Lithium	28.1 µg/L No EPA limit set	6/9	UCMR-5	2025
Chromium	15.4 µg/L 15% of the EPA limit 100 µg/L worst single sample: 16 µg/L	5/29	SYR4	2013–2019
Barium	109 µg/L 5.5% of the EPA limit 2000 µg/L worst single sample: 110 µg/L	3/29	SYR4	2013–2019
Lead	9.79 µg/L 65% of the EPA limit 15 µg/L worst single sample: 10 µg/L	2/25	SYR4	2013–2019

91 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SMITH, BRACH
Phone: 661-943-3170
Email: [email protected]

Frequently asked questions about Quartz Hill Water Dist.

Is Quartz Hill Water Dist. tap water safe to drink?

EPA monitoring detected 20 contaminants in Quartz Hill Water Dist.'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 Quartz Hill Water Dist.'s water?

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

How many people does Quartz Hill Water Dist. serve?

Quartz Hill Water Dist. reports serving 19,100 people in California, per its EPA record.

Has Quartz Hill Water Dist. had any water quality violations?

The EPA has 4 violations on file for Quartz Hill Water Dist., 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.