Is Indio Water Authority Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Riverside

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	1993-01-01 → 1993-01-31
MCL	Health-based	Resolved	1993-01-01 → 1993-01-31
MR	Monitoring	Archived	2024-07-01 → 2024-09-30
MR	Monitoring	Resolved	2013-01-01 → 2013-03-31
MR	Monitoring	Resolved	2013-01-01 → 2013-03-31
MR	Monitoring	Resolved	2013-01-01 → 2013-03-31
MR	Monitoring	Resolved	2013-01-01 → 2013-03-31
MR	Monitoring	Resolved	2003-08-01 → 2003-08-31
MR	Monitoring	Resolved	2003-08-01 → 2003-08-31
Other	Monitoring	Archived	1989-04-01 → 1989-04-30

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	7458 µg/L 75% of the EPA limit 10000 µg/L	394/420	SYR4	2012–2019
TTHM	16 µg/L 20% of the EPA limit 80 µg/L	65/112	SYR4	2012–2019
Fluoride	1000 µg/L 25% of the EPA limit 4000 µg/L	58/58	SYR4	2012–2019
Chromium	18 µg/L 18% of the EPA limit 100 µg/L	46/69	SYR4	2012–2019
Nitrate-Nitrite	950000 µg/L 9500% of the EPA limit, in the worst sample — 10000 µg/L	35/38	SYR4	2012–2019
Combined Uranium	8.046 µg/L 27% of the EPA limit 30 µg/L	29/31	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	27/27	LCR	2025
Bromoform	6.1 µg/L No EPA limit set	19/112	SYR4	2012–2019
Dibromochloromethane	5 µg/L No EPA limit set	15/112	SYR4	2012–2019
Bromodichloromethane	3 µg/L No EPA limit set	5/112	SYR4	2012–2019
Chloroform	2.1 µg/L No EPA limit set	2/112	SYR4	2012–2019
Dibromoacetic Acid	1.5 µg/L No EPA limit set	2/112	SYR4	2012–2019

99 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, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: PENA, MIGUEL
Phone: 760-625-1852
Email: MPena@indioca.gov

Frequently asked questions about Indio Water Authority

Is Indio Water Authority tap water safe to drink?

EPA monitoring detected 12 contaminants in Indio Water Authority'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 Indio Water Authority's water?

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

How many people does Indio Water Authority serve?

Indio Water Authority reports serving 84,757 people in California, per its EPA record.

Has Indio Water Authority had any water quality violations?

The EPA has 10 violations on file for Indio Water Authority, 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.