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Tap water quality report

Star Valley, AZ

EPA monitoring detected 19 contaminants across the 3 water suppliers serving Star Valley. 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.

3
water suppliers
1,603
people served
19
contaminants found
Arizona rankings Lead in Arizona PFAS in Arizona

What was found in Star Valley'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
Nitrate
4200 µg/L 42%
of the EPA limit 10000 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
Highest in the city: 5300 µg/L — LAMPLIGHTER RV RESORT · 308 people · 2019
3/3 SYR4
Nitrate-Nitrite
2919 µg/L 29%
of the EPA limit 10000 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2018
Highest in the city: 4952 µg/L — LAMPLIGHTER RV RESORT · 308 people · 2012
3/3 SYR4
Fluoride
792 µg/L 20%
of the EPA limit 4000 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2018
2/3 SYR4
Copper
390 µg/L 30%
of the EPA limit 1300 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
2/3 SYR4
Barium
96 µg/L 4.8%
of the EPA limit 2000 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2018
2/3 SYR4
Lead
17.8 µg/L 119%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
2/3 SYR4
Toluene
9.4 µg/L 0.9%
of the EPA limit 1000 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
1/3 SYR4
TTHM
9.11 µg/L 11%
of the EPA limit 80 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
1/3 SYR4
Bromoform
4.31 µg/L
No EPA limit set
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
1/3 SYR4
Dibromochloromethane
3.84 µg/L
No EPA limit set
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
1/3 SYR4
Arsenic
1.99 µg/L 20%
of the EPA limit 10 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2018
2/3 SYR4
Dibromoacetic Acid
1.6 µg/L
No EPA limit set
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
1/3 SYR4
Total Haloacetic Acids (HAA5)
1.47 µg/L 2.5%
of the EPA limit 60 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
1/3 SYR4
Di(2-ethylhexyl) Phthalate
1.4 µg/L 23%
of the EPA limit 6 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
2/3 SYR4
Bromodichloromethane
1.3 µg/L
No EPA limit set
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
1/3 SYR4
Xylenes, Total
0.7980 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
1/3 SYR4
Combined Radium (-226 And -228)
0.7000 pCi/L 14%
of the EPA limit 5 pCi/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
1/3 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2025
Highest in the city: 0.0038 mg/L — LAMPLIGHTER RV RESORT · 308 people · 2023
3/3 LCR
2,3,7,8-TCDD
0.0000066 µg/L 22%
of the EPA limit 0.000030 µg/L
Main supplier: TOWN OF STAR VALLEY WATER DEPARTMENT · 1,157 people · 2019
1/3 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 Star Valley

SupplierPopulation served
TOWN OF STAR VALLEY WATER DEPARTMENT 1,157
LAMPLIGHTER RV RESORT 308
PINE VIEW RV PARK 138

Frequently asked questions about Star Valley tap water

Is Star Valley tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Star Valley. 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 Star Valley?

3 public water suppliers report drinking-water monitoring for Star Valley, Arizona to the EPA. Each is listed above with its population served.

What contaminants are in Star Valley's water?

The contaminants EPA monitoring detected in Star Valley include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. 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.