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Tap water quality report

Rio Vista Ranches

EPA monitoring tested this supplier for 5 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

5
contaminants tested
5
detected
59
people served
4
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
GWP
Ownership
Private
Counties served
Mohave

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.

4
health-based violations
86
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
Other Monitoring Resolved 2025-08-02
Other Monitoring Resolved 2025-08-02
Other Monitoring Resolved 2025-07-30
Other Monitoring Resolved 2025-07-30
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2025-07-01

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
Copper
360 µg/L 28%
of the EPA limit 1300 µg/L
 14/15 SYR4 2013–2019
Lead
0.0034 mg/L 23%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2026
TTHM
53 µg/L 66%
of the EPA limit 80 µg/L
 7/10 SYR4 2012–2019
Lead
6.6 µg/L 44%
of the EPA limit 15 µg/L
 5/15 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
2.1 µg/L 3.5%
of the EPA limit 60 µg/L
 3/10 SYR4 2012–2019

Utility contact

Contact
CLARK, MARK
Phone
928-763-9400
Email
MCLARK@BULLHEADCITYAZ.GOV

Frequently asked questions about Rio Vista Ranches

Is Rio Vista Ranches tap water safe to drink?

EPA monitoring detected 5 contaminants in Rio Vista Ranches'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 Rio Vista Ranches's water?

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

How many people does Rio Vista Ranches serve?

Rio Vista Ranches reports serving 59 people in Arizona, per its EPA record.

Has Rio Vista Ranches had any water quality violations?

The EPA has 86 violations on file for Rio Vista Ranches, of which 4 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.