Tap WaterIndex

← Arizona

Tap water quality report

Quechan Utility

EPA monitoring tested this supplier for 99 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

99
contaminants tested
9
detected
5,660
people served
13
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
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.

13
health-based violations
497
violations on file
5
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2025-05-31
TT Health-based Resolved 2021-12-11
TT Health-based Resolved 2019-12-01
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2015-05-01 → 2015-05-31
MCL Health-based Resolved 2015-04-01 → 2015-04-30
MCL Health-based Resolved 2014-06-01 → 2014-06-30
MCL Health-based Resolved 2014-05-01 → 2014-05-31
MCL Health-based Resolved 2012-09-01 → 2012-09-30
MCL Health-based Resolved 2012-05-01 → 2012-05-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0061 mg/L 41%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2025
Lithium
63 µg/L
No EPA limit set
 4/4 UCMR-5 2024
Barium
27 µg/L 1.4%
of the EPA limit 2000 µg/L
 3/3 SYR4 2014–2019
Combined Uranium
6.705 µg/L 22%
of the EPA limit 30 µg/L
 3/3 SYR4 2015–2019
Gross Alpha, Excl. Radon And U
4.5 pCi/L 30%
of the EPA limit 15 pCi/L
 3/3 SYR4 2015–2019
Nitrate
2000 µg/L 20%
of the EPA limit 10000 µg/L
 2/16 SYR4 2012–2019
1,2-DIBROMO-3-CHLOROPROPANE
0.0090 µg/L 4.5%
of the EPA limit 0.2000 µg/L
 1/6 SYR4 2014–2019
Arsenic
3.1 µg/L 31%
of the EPA limit 10 µg/L
 1/3 SYR4 2014–2019
Mercury
0.2100 µg/L 11%
of the EPA limit 2 µg/L
 1/3 SYR4 2014–2019
90 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Jonathan E. Koteen
Email
president@quechantribe.com

Frequently asked questions about Quechan Utility

Is Quechan Utility tap water safe to drink?

EPA monitoring detected 9 contaminants in Quechan Utility'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 Quechan Utility's water?

EPA monitoring detected Lead, Lithium, Barium, Combined Uranium, Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.

How many people does Quechan Utility serve?

Quechan Utility reports serving 5,660 people in Arizona, per its EPA record.

Has Quechan Utility had any water quality violations?

The EPA has 497 violations on file for Quechan Utility, of which 13 are health-based (a contaminant limit or required treatment was breached) and 5 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.