Is Nps - Death Valley, Cow Creek/Nevares Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Federal government
Counties served: Inyo

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	Archived	2025-01-01 → 2025-12-31
MR	Monitoring	Archived	2025-01-01 → 2025-12-31
MR	Monitoring	Resolved	2022-10-01
MR	Monitoring	Resolved	2022-10-01
MR	Monitoring	Resolved	2015-06-01
MR	Monitoring	Resolved	2015-06-01

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	3400 µg/L 85% of the EPA limit 4000 µg/L worst single sample: 3700 µg/L	101/101	SYR4	2012–2019
Lead	0.0530 mg/L 353% above the EPA limit of 0.0150 mg/L	12/12	LCR	2026
Combined Uranium	4.59665 µg/L 15% of the EPA limit 30 µg/L worst single sample: 6.407 µg/L	10/13	SYR4	2012–2019
Dibromochloromethane	7.41 µg/L No EPA limit set worst single sample: 8.1 µg/L	7/12	SYR4	2014–2019
TTHM	18.33 µg/L 23% of the EPA limit 80 µg/L worst single sample: 19.5 µg/L	7/12	SYR4	2014–2019
Total Haloacetic Acids (HAA5)	2.78 µg/L 4.6% of the EPA limit 60 µg/L worst single sample: 2.9 µg/L	7/12	SYR4	2014–2019
Bromoform	5.675 µg/L No EPA limit set worst single sample: 5.7 µg/L	6/12	SYR4	2014–2019
Bromodichloromethane	3.44 µg/L No EPA limit set worst single sample: 3.6 µg/L	5/12	SYR4	2014–2019
Chloroform	2.08 µg/L No EPA limit set worst single sample: 2.1 µg/L	5/12	SYR4	2014–2019
Dibromoacetic Acid	2.82 µg/L No EPA limit set worst single sample: 2.9 µg/L	5/12	SYR4	2014–2019
Arsenic	5.955 µg/L 60% of the EPA limit 10 µg/L worst single sample: 6 µg/L	4/4	SYR4	2013–2019
Dichloroacetic Acid	1.47 µg/L No EPA limit set worst single sample: 1.5 µg/L	3/12	SYR4	2014–2019

69 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrateNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: AILLAUD, BRIAN
Phone: 760-786-3295
Email: [email protected]

Frequently asked questions about Nps - Death Valley, Cow Creek/Nevares

Is Nps - Death Valley, Cow Creek/Nevares tap water safe to drink?

EPA monitoring detected 12 contaminants in Nps - Death Valley, Cow Creek/Nevares'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 Nps - Death Valley, Cow Creek/Nevares's water?

EPA monitoring detected Fluoride, Lead, Combined Uranium, Dibromochloromethane, TTHM, and others. The full list with the level and data source for each is above.

How many people does Nps - Death Valley, Cow Creek/Nevares serve?

Nps - Death Valley, Cow Creek/Nevares reports serving 88 people in California, per its EPA record.

Has Nps - Death Valley, Cow Creek/Nevares had any water quality violations?

The EPA has 6 violations on file for Nps - Death Valley, Cow Creek/Nevares, 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.