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Tap water quality report

Gtnp-Colter Bay Village

EPA monitoring tested this supplier for 80 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

80
contaminants tested
14
detected
4,514
people served
1
health-based violations
Wyoming rankingsLead in WyomingPFAS in Wyoming
Water source
Ground water
Ownership
Federal government
Counties served
Teton

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.

1
health-based violations
3
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2007-05-01 → 2007-05-31
MR Monitoring Resolved 2023-04-01 → 2023-06-30
MON Monitoring Resolved 2022-05-01 → 2022-05-31

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
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2023
Nitrate-Nitrite
200 µg/L 2%
of the EPA limit 10000 µg/L
 8/36 SYR4 2012–2019
Copper
658 µg/L 51%
of the EPA limit 1300 µg/L
worst single sample: 670 µg/L
5/5 SYR4 2017
TTHM
5.415 µg/L 6.8%
of the EPA limit 80 µg/L
worst single sample: 6 µg/L
4/5 SYR4 2014–2019
Lead
6.85 µg/L 46%
of the EPA limit 15 µg/L
worst single sample: 7 µg/L
2/5 SYR4 2017
Thallium, Total
1 µg/L 50%
of the EPA limit 2 µg/L
 2/8 SYR4 2013–2019
Bromodichloromethane
0.6600 µg/L
No EPA limit set
 1/2 SYR4 2019
Cyanide
10 µg/L 5%
of the EPA limit 200 µg/L
 1/7 SYR4 2013–2019
Chloroform
1.4 µg/L
No EPA limit set
 1/2 SYR4 2019
Combined Uranium
0.9000 µg/L 3%
of the EPA limit 30 µg/L
 1/1 SYR4 2019
Dichloroacetic Acid
0.9100 µg/L
No EPA limit set
 1/1 SYR4 2019
Gross Alpha, Excl. Radon And U
1.4 pCi/L 9.3%
of the EPA limit 15 pCi/L
 1/3 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
1.7 µg/L 2.8%
of the EPA limit 60 µg/L
 1/3 SYR4 2014–2019
Trichloroacetic Acid
0.8000 µg/L
No EPA limit set
 1/1 SYR4 2019
66 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, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
LARSON, PATRICK
Phone
307-739-3366
Email
[email protected]

Frequently asked questions about Gtnp-Colter Bay Village

Is Gtnp-Colter Bay Village tap water safe to drink?

EPA monitoring detected 14 contaminants in Gtnp-Colter Bay Village'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 Gtnp-Colter Bay Village's water?

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

How many people does Gtnp-Colter Bay Village serve?

Gtnp-Colter Bay Village reports serving 4,514 people in Wyoming, per its EPA record.

Has Gtnp-Colter Bay Village had any water quality violations?

The EPA has 3 violations on file for Gtnp-Colter Bay Village, of which 1 is health-based (a contaminant limit or required treatment was breached) and 0 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.