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Tap water quality report

Colorado River Regional Water

EPA monitoring tested this supplier for 33 contaminants and detected 4. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

33
contaminants tested
4
detected
3,476
people served
17
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.

17
health-based violations
62
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2020-04-01
MCL Health-based Resolved 2016-09-01 → 2016-09-30
MCL Health-based Resolved 2015-10-01 → 2015-10-31
MCL Health-based Resolved 2015-06-01 → 2015-06-30
MCL Health-based Resolved 2015-05-01 → 2015-05-31
MCL Health-based Resolved 2014-05-01 → 2014-05-31
TT Health-based Resolved 2014-03-31
TT Health-based Resolved 2014-03-31
TT Health-based Resolved 2014-03-31
TT Health-based Resolved 2014-03-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
64.2 µg/L 80%
of the EPA limit 80 µg/L
worst single sample: 72 µg/L
13/18 SYR4 2012–2019
Lead
0.0023 mg/L 15%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2022
Total Haloacetic Acids (HAA5)
9.5 µg/L 16%
of the EPA limit 60 µg/L
worst single sample: 9.9 µg/L
11/18 SYR4 2012–2019
Lithium
150 µg/L
No EPA limit set
 2/2 UCMR-5 2025
29 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfuna

Utility contact

Contact
Amelia Flores
Phone
9286699211
Email
[email protected]

Frequently asked questions about Colorado River Regional Water

Is Colorado River Regional Water tap water safe to drink?

EPA monitoring detected 4 contaminants in Colorado River Regional Water'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 Colorado River Regional Water's water?

EPA monitoring detected TTHM, Lead, Total Haloacetic Acids (HAA5), Lithium. The full list with the level and data source for each is above.

How many people does Colorado River Regional Water serve?

Colorado River Regional Water reports serving 3,476 people in Arizona, per its EPA record.

Has Colorado River Regional Water had any water quality violations?

The EPA has 62 violations on file for Colorado River Regional Water, of which 17 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.