Is Cheyenne Board of Public Utilities Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Laramie

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	1991-05-01 → 1991-05-31
MCL	Health-based	Archived	1991-05-01 → 1991-05-31
MR	Monitoring	Archived	1996-09-01 → 1996-09-30
MR	Monitoring	Archived	1995-07-01 → 1995-07-31
MR	Monitoring	Resolved	1994-07-01
MR	Monitoring	Archived	1994-03-01 → 1994-03-31
MR	Monitoring	Archived	1993-10-01 → 1993-10-31
MR	Monitoring	Archived	1993-06-01 → 1993-06-30
MR	Monitoring	Archived	1991-05-01 → 1991-05-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
TTHM	57.3 µg/L 72% of the EPA limit 80 µg/L worst single sample: 75.6 µg/L	248/248	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	33.325 µg/L 56% of the EPA limit 60 µg/L worst single sample: 44 µg/L	248/248	SYR4	2012–2019
Nitrate	700 µg/L 7% of the EPA limit 10000 µg/L worst single sample: 800 µg/L	44/44	SYR4	2012–2019
Copper	450 µg/L 35% of the EPA limit 1300 µg/L worst single sample: 920 µg/L	30/30	SYR4	2017
Barium	47 µg/L 2.4% of the EPA limit 2000 µg/L worst single sample: 57 µg/L	21/21	SYR4	2012–2019
Nitrate-Nitrite	705 µg/L 7% of the EPA limit 10000 µg/L worst single sample: 800 µg/L	20/20	SYR4	2012–2019
Fluoride	610 µg/L 15% of the EPA limit 4000 µg/L worst single sample: 700 µg/L	19/21	SYR4	2012–2019
Lead	100.1 µg/L 667% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 380 µg/L	16/30	SYR4	2017
Gross Alpha, Excl. Radon And U	6.33 pCi/L 42% of the EPA limit 15 pCi/L worst single sample: 10.1 pCi/L	14/14	SYR4	2012–2018
Lead	0.0150 mg/L 100% of the EPA limit 0.0150 mg/L	14/14	LCR	2025
Combined Radium (-226 And -228)	4.2 pCi/L 84% of the EPA limit 5 pCi/L	12/13	SYR4	2012–2018
Combined Uranium	6.2878 µg/L 21% of the EPA limit 30 µg/L	12/13	SYR4	2012–2018
Arsenic	1.5 µg/L 15% of the EPA limit 10 µg/L	1/21	SYR4	2012–2019
Endothall	9 µg/L 9% of the EPA limit 100 µg/L	1/18	SYR4	2012–2019
Gross Beta Particle Activity	3.2 pCi/L No EPA limit set	1/1	SYR4	2015

61 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromateChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: BASSETT, CLINT
Phone: 307-632-9890
Email: [email protected]

Frequently asked questions about Cheyenne Board of Public Utilities

Is Cheyenne Board of Public Utilities tap water safe to drink?

EPA monitoring detected 15 contaminants in Cheyenne Board of Public Utilities'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 Cheyenne Board of Public Utilities's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Nitrate, Copper, Barium, and others. The full list with the level and data source for each is above.

How many people does Cheyenne Board of Public Utilities serve?

Cheyenne Board of Public Utilities reports serving 64,165 people in Wyoming, per its EPA record.

Has Cheyenne Board of Public Utilities had any water quality violations?

The EPA has 9 violations on file for Cheyenne Board of Public Utilities, of which 2 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.