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Tap water quality report

Superior, WY

EPA monitoring detected 17 contaminants across the 1 water supplier serving Superior. 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
336
people served
17
contaminants found
Wyoming rankings Lead in Wyoming PFAS in Wyoming

What was found in Superior'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
380 µg/L 9.5%
of the EPA limit 4000 µg/L
Main supplier: SUPERIOR, TOWN OF · 336 people · 2017
1/1 SYR4
Copper
189.9 µg/L 15%
of the EPA limit 1300 µg/L
Main supplier: SUPERIOR, TOWN OF · 336 people · 2018
1/1 SYR4
Barium
100 µg/L 5%
of the EPA limit 2000 µg/L
Main supplier: SUPERIOR, TOWN OF · 336 people · 2017
1/1 SYR4
Lead
5.25 µg/L 35%
of the EPA limit 15 µg/L
Main supplier: SUPERIOR, TOWN OF · 336 people · 2018
1/1 SYR4
Combined Radium (-226 And -228)
4.97 pCi/L 99%
of the EPA limit 5 pCi/L
Main supplier: SUPERIOR, TOWN OF · 336 people · 2019
1/1 SYR4
TTHM
4.856 µg/L 6.1%
of the EPA limit 80 µg/L
Main supplier: SUPERIOR, TOWN OF · 336 people · 2017
1/1 SYR4
Gross Alpha, Excl. Radon And U
2 pCi/L 13%
of the EPA limit 15 pCi/L
Main supplier: SUPERIOR, TOWN OF · 336 people · 2019
1/1 SYR4
Dibromochloromethane
1.56 µg/L
No EPA limit set
Main supplier: SUPERIOR, TOWN OF · 336 people · 2017
1/1 SYR4
Bromodichloromethane
1.268 µg/L
No EPA limit set
Main supplier: SUPERIOR, TOWN OF · 336 people · 2017
1/1 SYR4
Diquat
1.23 µg/L 6.2%
of the EPA limit 20 µg/L
Main supplier: SUPERIOR, TOWN OF · 336 people · 2017
1/1 SYR4
Total Haloacetic Acids (HAA5)
1.228 µg/L 2%
of the EPA limit 60 µg/L
Main supplier: SUPERIOR, TOWN OF · 336 people · 2017
1/1 SYR4
Dichloroacetic Acid
0.7700 µg/L
No EPA limit set
Main supplier: SUPERIOR, TOWN OF · 336 people · 2017
1/1 SYR4
Chloroform
0.7675 µg/L
No EPA limit set
Main supplier: SUPERIOR, TOWN OF · 336 people · 2017
1/1 SYR4
Dibromoacetic Acid
0.5800 µg/L
No EPA limit set
Main supplier: SUPERIOR, TOWN OF · 336 people · 2017
1/1 SYR4
Bromoform
0.5400 µg/L
No EPA limit set
Main supplier: SUPERIOR, TOWN OF · 336 people · 2017
1/1 SYR4
Combined Uranium
0.4000 µg/L 1.3%
of the EPA limit 30 µg/L
Main supplier: SUPERIOR, TOWN OF · 336 people · 2019
1/1 SYR4
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
Main supplier: SUPERIOR, TOWN OF · 336 people · 2026
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 Superior

SupplierPopulation served
SUPERIOR, TOWN OF 336

Frequently asked questions about Superior tap water

Is Superior tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Superior. 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 Superior?

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

What contaminants are in Superior's water?

The contaminants EPA monitoring detected in Superior include Fluoride, Copper, Barium, Lead, Combined Radium (-226 And -228). 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.