Is Taos Pueblo Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Native American

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	2009-03-01 → 2009-03-31
MCL	Health-based	Resolved	2009-03-01 → 2009-03-31
MCL	Health-based	Resolved	2009-03-01 → 2009-03-31
MCL	Health-based	Resolved	2006-11-01 → 2006-11-30
MCL	Health-based	Resolved	2006-11-01 → 2006-11-30
MCL	Health-based	Resolved	2006-11-01 → 2006-11-30
MCL	Health-based	Resolved	2006-10-01 → 2006-10-31
MCL	Health-based	Resolved	2006-10-01 → 2006-10-31
MCL	Health-based	Resolved	2006-10-01 → 2006-10-31
MCL	Health-based	Resolved	2006-01-01 → 2006-01-31

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
Lead	0.0095 mg/L 63% of the EPA limit 0.0150 mg/L	27/27	LCR	2023
Copper	143 µg/L 11% of the EPA limit 1300 µg/L	20/20	SYR4	2014–2017
Barium	110 µg/L 5.5% of the EPA limit 2000 µg/L	10/10	SYR4	2013–2018
Fluoride	356 µg/L 8.9% of the EPA limit 4000 µg/L worst single sample: 420 µg/L	9/10	SYR4	2013–2018
Lead	1.65 µg/L 11% of the EPA limit 15 µg/L worst single sample: 1.8 µg/L	7/20	SYR4	2014–2017
Combined Uranium	1.79 µg/L 6% of the EPA limit 30 µg/L worst single sample: 1.8 µg/L	3/6	SYR4	2015–2018
Bromodichloromethane	0.8175 µg/L No EPA limit set worst single sample: 0.8340 µg/L	2/9	SYR4	2014–2019
Nitrate-Nitrite	600 µg/L 6% of the EPA limit 10000 µg/L	2/32	SYR4	2012–2019
TTHM	2.15315 µg/L 2.7% of the EPA limit 80 µg/L worst single sample: 2.24 µg/L	2/9	SYR4	2014–2019
Chloroform	0.5240 µg/L No EPA limit set	1/9	SYR4	2014–2019
Di(2-ethylhexyl) Phthalate	0.6100 µg/L 10% of the EPA limit 6 µg/L	1/10	SYR4	2013–2018
Dibromochloromethane	0.8840 µg/L No EPA limit set	1/9	SYR4	2014–2019
Gross Beta Particle Activity	0.9830 pCi/L No EPA limit set	1/6	SYR4	2015–2018

97 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDibromoacetic AcidDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Frequently asked questions about Taos Pueblo

Is Taos Pueblo tap water safe to drink?

EPA monitoring detected 13 contaminants in Taos Pueblo'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 Taos Pueblo's water?

EPA monitoring detected Lead, Copper, Barium, Fluoride, Lead, and others. The full list with the level and data source for each is above.

How many people does Taos Pueblo serve?

Taos Pueblo reports serving 2,652 people, per its EPA record.

Has Taos Pueblo had any water quality violations?

The EPA has 54 violations on file for Taos Pueblo, of which 24 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.