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Tap water quality report

Cowley, WY

EPA monitoring detected 13 contaminants across the 1 water supplier serving Cowley. 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.

1
water supplier
800
people served
13
contaminants found
Wyoming rankings Lead in Wyoming PFAS in Wyoming

What was found in Cowley'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
1600 µg/L 40%
of the EPA limit 4000 µg/L
Main supplier: COWLEY, TOWN OF · 800 people · 2018
1/1 SYR4
Nitrate
270 µg/L 2.7%
of the EPA limit 10000 µg/L
Main supplier: COWLEY, TOWN OF · 800 people · 2012
1/1 SYR4
Nitrate-Nitrite
270 µg/L 2.7%
of the EPA limit 10000 µg/L
Main supplier: COWLEY, TOWN OF · 800 people · 2019
1/1 SYR4
Copper
128 µg/L 9.8%
of the EPA limit 1300 µg/L
Main supplier: COWLEY, TOWN OF · 800 people · 2018
1/1 SYR4
Barium
70 µg/L 3.5%
of the EPA limit 2000 µg/L
Main supplier: COWLEY, TOWN OF · 800 people · 2018
1/1 SYR4
Gross Alpha, Excl. Radon And U
8.185 pCi/L 55%
of the EPA limit 15 pCi/L
Main supplier: COWLEY, TOWN OF · 800 people · 2019
1/1 SYR4
Selenium
5 µg/L 10%
of the EPA limit 50 µg/L
Main supplier: COWLEY, TOWN OF · 800 people · 2018
1/1 SYR4
Combined Uranium
4.9 µg/L 16%
of the EPA limit 30 µg/L
Main supplier: COWLEY, TOWN OF · 800 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
4.685 pCi/L 94%
of the EPA limit 5 pCi/L
Main supplier: COWLEY, TOWN OF · 800 people · 2019
1/1 SYR4
Arsenic
4 µg/L 40%
of the EPA limit 10 µg/L
Main supplier: COWLEY, TOWN OF · 800 people · 2018
1/1 SYR4
Lead
4 µg/L 27%
of the EPA limit 15 µg/L
Main supplier: COWLEY, TOWN OF · 800 people · 2018
1/1 SYR4
Thallium, Total
0.5000 µg/L 25%
of the EPA limit 2 µg/L
Main supplier: COWLEY, TOWN OF · 800 people · 2018
1/1 SYR4
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
Main supplier: COWLEY, TOWN OF · 800 people · 2024
1/1 LCR
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 Cowley

SupplierPopulation served
COWLEY, TOWN OF 800

Frequently asked questions about Cowley tap water

Is Cowley tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Cowley. 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 Cowley?

1 public water supplier report drinking-water monitoring for Cowley, Wyoming to the EPA. Each is listed above with its population served.

What contaminants are in Cowley's water?

The contaminants EPA monitoring detected in Cowley include Fluoride, Nitrate, Nitrate-Nitrite, 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.