Is Us Army Fort Irwin Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Federal government
Counties served: San Bernardino

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.

142

health-based violations

144

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2016-04-01 → 2016-06-30
MCL	Health-based	Resolved	2016-04-01 → 2016-06-30
MCL	Health-based	Resolved	2016-04-01 → 2016-06-30
MCL	Health-based	Resolved	2016-04-01 → 2016-06-30
MCL	Health-based	Resolved	2016-01-01 → 2016-03-31
MCL	Health-based	Resolved	2016-01-01 → 2016-03-31
MCL	Health-based	Resolved	2016-01-01 → 2016-03-31
MCL	Health-based	Resolved	2016-01-01 → 2016-03-31
MCL	Health-based	Resolved	2015-10-01 → 2015-12-31
MCL	Health-based	Resolved	2015-10-01 → 2015-12-31

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
Nitrate	4800 µg/L 48% of the EPA limit 10000 µg/L worst single sample: 11978 µg/L	466/470	SYR4	2012–2019
Fluoride	9000 µg/L 225% of the EPA limit, at the 95th percentile of samples — 4000 µg/L worst single sample: 16000 µg/L	407/407	SYR4	2012–2019
Arsenic	32 µg/L 320% of the EPA limit, at the 95th percentile of samples — 10 µg/L worst single sample: 36 µg/L	354/529	SYR4	2012–2019
Bromoform	17.4 µg/L No EPA limit set worst single sample: 36 µg/L	73/76	SYR4	2014–2019
TTHM	33.8 µg/L 42% of the EPA limit 80 µg/L worst single sample: 51 µg/L	73/73	SYR4	2014–2019
Dibromochloromethane	11 µg/L No EPA limit set worst single sample: 12 µg/L	52/76	SYR4	2014–2019
Chromium	7.6 µg/L 7.6% of the EPA limit 100 µg/L worst single sample: 12 µg/L	43/45	SYR4	2012–2018
Bromodichloromethane	3.76 µg/L No EPA limit set worst single sample: 12 µg/L	28/76	SYR4	2014–2019
Dibromoacetic Acid	3 µg/L No EPA limit set worst single sample: 3.5 µg/L	26/76	SYR4	2014–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	26/26	LCR	2024
Total Haloacetic Acids (HAA5)	7.96 µg/L 13% of the EPA limit 60 µg/L worst single sample: 10 µg/L	18/76	SYR4	2014–2019
Monobromoacetic Acid	2.46 µg/L No EPA limit set worst single sample: 2.9 µg/L	12/76	SYR4	2014–2019
Chloroform	4.09 µg/L No EPA limit set worst single sample: 5.8 µg/L	10/76	SYR4	2014–2019
Combined Uranium	13.8622 µg/L 46% of the EPA limit 30 µg/L worst single sample: 15.049 µg/L	10/10	SYR4	2014–2018
Barium	47.6 µg/L 2.4% of the EPA limit 2000 µg/L worst single sample: 56 µg/L	9/18	SYR4	2012–2018
Dichloroacetic Acid	2.08 µg/L No EPA limit set worst single sample: 2.2 µg/L	5/76	SYR4	2014–2019
Monochloroacetic Acid	7.5 µg/L No EPA limit set worst single sample: 8.3 µg/L	5/76	SYR4	2014–2019
Lithium	11 µg/L No EPA limit set	1/2	UCMR-5	2025

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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SISNEROS, EVETTE
Phone: 760-380-3737
Email: [email protected]

Frequently asked questions about Us Army Fort Irwin

Is Us Army Fort Irwin tap water safe to drink?

EPA monitoring detected 18 contaminants in Us Army Fort Irwin'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 Us Army Fort Irwin's water?

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

How many people does Us Army Fort Irwin serve?

Us Army Fort Irwin reports serving 15,701 people in California, per its EPA record.

Has Us Army Fort Irwin had any water quality violations?

The EPA has 144 violations on file for Us Army Fort Irwin, of which 142 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.