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Tap water quality report

Rock Point, AZ

EPA monitoring detected 10 contaminants across the 2 water suppliers serving Rock Point. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
1,787
people served
10
contaminants found
Arizona rankings Lead in Arizona PFAS in Arizona

What was found in Rock Point's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
1430 µg/L 36%
of the EPA limit 4000 µg/L
Main supplier: Rock Point NTUA · 1,029 people · 2018
2/2 SYR4
Barium
692 µg/L 35%
of the EPA limit 2000 µg/L
Main supplier: Rock Point NTUA · 1,029 people · 2018
2/2 SYR4
Nitrite
300 µg/L 30%
of the EPA limit 1000 µg/L
Main supplier: Rock Point NTUA · 1,029 people · 2019
1/2 SYR4
Arsenic
3.095 µg/L 31%
of the EPA limit 10 µg/L
Main supplier: Rock Point NTUA · 1,029 people · 2018
2/2 SYR4
Gross Alpha, Excl. Radon And U
2.205 pCi/L 15%
of the EPA limit 15 pCi/L
Main supplier: Rock Point NTUA · 1,029 people · 2017
1/2 SYR4
Combined Radium (-226 And -228)
0.7000 pCi/L 14%
of the EPA limit 5 pCi/L
Main supplier: Rock Point NTUA · 1,029 people · 2017
1/2 SYR4
TTHM
0.6440 µg/L 0.8%
of the EPA limit 80 µg/L
Highest in the city: Rock Point Community School BIA · 758 people · 2019
1/2 SYR4
Mercury
0.4950 µg/L 25%
of the EPA limit 2 µg/L
Main supplier: Rock Point NTUA · 1,029 people · 2018
1/2 SYR4
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: Rock Point NTUA · 1,029 people · 2025
Highest in the city: 0.0025 mg/L — Rock Point Community School BIA · 758 people · 2025
2/2 LCR
2,3,7,8-TCDD
0.000012 µg/L 39%
of the EPA limit 0.000030 µg/L
Highest in the city: Rock Point Community School BIA · 758 people · 2018
1/2 SYR4
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 the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Rock Point

SupplierPopulation served
Rock Point NTUA 1,029
Rock Point Community School BIA 758

Frequently asked questions about Rock Point tap water

Is Rock Point tap water safe to drink?

EPA testing detected 10 contaminants in the water serving Rock Point. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Rock Point?

2 public water suppliers report drinking-water monitoring for Rock Point, Arizona to the EPA. Each is listed above with its population served.

What contaminants are in Rock Point's water?

The contaminants EPA monitoring detected in Rock Point include Fluoride, Barium, Nitrite, Arsenic, Gross Alpha, Excl. Radon And U. The full list, with the level at the main supplier and the data source, is in the table above.

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.