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Tap water quality report

Superior, Town of

EPA monitoring tested this supplier for 79 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

79
contaminants tested
17
detected
336
people served
6
health-based violations
Wyoming rankingsLead in WyomingPFAS in Wyoming
Water source
Ground water
Ownership
Local government
Counties served
Sweetwater

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.

6
health-based violations
189
violations on file
8
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2025-01-01
TT Health-based Unaddressed 2024-08-30
MCL Health-based Archived 1996-08-01 → 1996-08-31
MCL Health-based Archived 1992-01-01 → 1993-12-31
MCL Health-based Archived 1992-01-01 → 1993-12-31
MCL Health-based Archived 1981-07-01 → 1981-07-31
Other Monitoring Addressed 2025-07-01
MR Monitoring Addressed 2025-07-01
Other Monitoring Resolved 2024-07-01
Other Monitoring Resolved 2024-07-01

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2026
Copper
189.9 µg/L 15%
of the EPA limit 1300 µg/L
worst single sample: 198 µg/L
10/10 SYR4 2015–2018
Lead
5.25 µg/L 35%
of the EPA limit 15 µg/L
worst single sample: 6 µg/L
6/10 SYR4 2015–2018
TTHM
4.856 µg/L 6.1%
of the EPA limit 80 µg/L
worst single sample: 5.06 µg/L
4/5 SYR4 2013–2017
Bromodichloromethane
1.268 µg/L
No EPA limit set
worst single sample: 1.3 µg/L
3/4 SYR4 2014–2017
Dibromochloromethane
1.56 µg/L
No EPA limit set
worst single sample: 1.6 µg/L
3/4 SYR4 2014–2017
Fluoride
380 µg/L 9.5%
of the EPA limit 4000 µg/L
worst single sample: 400 µg/L
3/3 SYR4 2013–2017
Total Haloacetic Acids (HAA5)
1.228 µg/L 2%
of the EPA limit 60 µg/L
worst single sample: 1.3 µg/L
3/3 SYR4 2013–2017
Barium
100 µg/L 5%
of the EPA limit 2000 µg/L
 2/3 SYR4 2013–2017
Chloroform
0.7675 µg/L
No EPA limit set
worst single sample: 0.7700 µg/L
2/4 SYR4 2014–2017
Combined Radium (-226 And -228)
4.97 pCi/L 99%
of the EPA limit 5 pCi/L
worst single sample: 5.1 pCi/L
2/2 SYR4 2016–2019
Dibromoacetic Acid
0.5800 µg/L
No EPA limit set
 2/2 SYR4 2014–2017
Bromoform
0.5400 µg/L
No EPA limit set
 1/4 SYR4 2014–2017
Combined Uranium
0.4000 µg/L 1.3%
of the EPA limit 30 µg/L
 1/2 SYR4 2016–2019
Dichloroacetic Acid
0.7700 µg/L
No EPA limit set
 1/2 SYR4 2014–2017
Diquat
1.23 µg/L 6.2%
of the EPA limit 20 µg/L
 1/4 SYR4 2016–2017
Gross Alpha, Excl. Radon And U
2 pCi/L 13%
of the EPA limit 15 pCi/L
 1/2 SYR4 2016–2019
62 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrate-NitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
VAUGHN, ANITA
Phone
307-362-8173
Email
[email protected]

Frequently asked questions about Superior, Town of

Is Superior, Town of tap water safe to drink?

EPA monitoring detected 17 contaminants in Superior, Town of'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 Superior, Town of's water?

EPA monitoring detected Lead, Copper, Lead, TTHM, Bromodichloromethane, and others. The full list with the level and data source for each is above.

How many people does Superior, Town of serve?

Superior, Town of reports serving 336 people in Wyoming, per its EPA record.

Has Superior, Town of had any water quality violations?

The EPA has 189 violations on file for Superior, Town of, of which 6 are health-based (a contaminant limit or required treatment was breached) and 8 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.