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Arapahoe Comm Water

EPA monitoring tested this supplier for 81 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

81
contaminants tested
18
detected
4,100
people served
22
health-based violations
Wyoming rankingsLead in WyomingPFAS in Wyoming
Water source
Ground water
Ownership
Native American

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.

22
health-based violations
578
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2016-08-24
MCL Health-based Resolved 2004-11-01 → 2004-11-30
MCL Health-based Resolved 2004-11-01 → 2004-11-30
MCL Health-based Resolved 2004-11-01 → 2004-11-30
MCL Health-based Resolved 2003-11-01 → 2003-11-30
MCL Health-based Resolved 2003-11-01 → 2003-11-30
MCL Health-based Resolved 2003-11-01 → 2003-11-30
MCL Health-based Resolved 2003-11-01 → 2003-11-30
MCL Health-based Resolved 2003-11-01 → 2003-11-30
MCL Health-based Resolved 2003-11-01 → 2003-11-30

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
TTHM
61.35 µg/L 77%
of the EPA limit 80 µg/L
worst single sample: 153 µg/L
14/19 SYR4 2013–2019
Copper
176.25 µg/L 14%
of the EPA limit 1300 µg/L
worst single sample: 355 µg/L
12/20 SYR4 2015–2018
Bromoform
4.33 µg/L
No EPA limit set
worst single sample: 4.6 µg/L
10/17 SYR4 2014–2019
Dibromochloromethane
4.66 µg/L
No EPA limit set
worst single sample: 5.2 µg/L
10/17 SYR4 2014–2019
Fluoride
720 µg/L 18%
of the EPA limit 4000 µg/L
worst single sample: 800 µg/L
9/9 SYR4 2016–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2024
Nitrate-Nitrite
40 µg/L 0.4%
of the EPA limit 10000 µg/L
 8/54 SYR4 2012–2019
Bromodichloromethane
8.775 µg/L
No EPA limit set
worst single sample: 11 µg/L
6/17 SYR4 2014–2019
Combined Radium (-226 And -228)
3.75 pCi/L 75%
of the EPA limit 5 pCi/L
worst single sample: 4 pCi/L
6/6 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
8.725 pCi/L 58%
of the EPA limit 15 pCi/L
worst single sample: 10 pCi/L
6/7 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
0.9130 µg/L 1.5%
of the EPA limit 60 µg/L
worst single sample: 1 µg/L
4/8 SYR4 2013–2019
Chloroform
120.74 µg/L
No EPA limit set
worst single sample: 134 µg/L
3/17 SYR4 2014–2019
Dibromoacetic Acid
0.4160 µg/L
No EPA limit set
worst single sample: 0.4200 µg/L
3/6 SYR4 2014–2019
Combined Uranium
0.3950 µg/L 1.3%
of the EPA limit 30 µg/L
worst single sample: 0.4000 µg/L
2/8 SYR4 2012–2019
Lead
14.3 µg/L 95%
of the EPA limit 15 µg/L
worst single sample: 15 µg/L
2/20 SYR4 2015–2018
Cadmium
2 µg/L 40%
of the EPA limit 5 µg/L
 1/9 SYR4 2016–2019
Chromium
50 µg/L 50%
of the EPA limit 100 µg/L
 1/9 SYR4 2016–2019
Toluene
0.5200 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/11 SYR4 2012–2019
63 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, TotalChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
LITTLE BEAR, HAROLD
Phone
307-463-4560
Email
[email protected]

Frequently asked questions about Arapahoe Comm Water

Is Arapahoe Comm Water tap water safe to drink?

EPA monitoring detected 18 contaminants in Arapahoe Comm Water'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 Arapahoe Comm Water's water?

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

How many people does Arapahoe Comm Water serve?

Arapahoe Comm Water reports serving 4,100 people in Wyoming, per its EPA record.

Has Arapahoe Comm Water had any water quality violations?

The EPA has 578 violations on file for Arapahoe Comm Water, of which 22 are 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.