Water Quality Report · Updated May 12, 2026
CHEYENNE BOARD OF PUBLIC UTILITIES
CHEYENNE BOARD OF PUBLIC UTILITIES delivers tap water graded D (64/100) by TapWaterSafety.org. The utility serves approximately 64,165 residents in CHEYENNE, Wyoming using surface water. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. For questions, the utility can be reached at 307-632-9890.
Is CHEYENNE tap water safe to drink?
CHEYENNE BOARD OF PUBLIC UTILITIES delivers tap water that earns a grade of D (64/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including haloacetic acids (haa9) significantly above health guideline.
The utility serves 64,165 residents in CHEYENNE, drawing from surface water.
Public testing data identifies 15 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Haloacetic acids (HAA5), Trichloroacetic acid, Bromodichloromethane, Bromochloroacetic acid, Chloroform, Dichloroacetic acid, Dibromochloromethane, Dibromoacetic acid, Nitrate, Uranium, Nitrate and nitrite, Radium, combined (-226 and -228), Chromium (hexavalent). For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
Quick actions for CHEYENNE residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for CHEYENNE BOARD OF PUBLIC UTILITIES.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 27.5 ppb, 459x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 34.5 ppb, 230x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 21.4 ppb, 214x above the EWG health guideline of 0.1 ppb.
Contact CHEYENNE BOARD OF PUBLIC UTILITIES
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for CHEYENNE
Filters matched to the specific contaminants in this water supply.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 64/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
27.5 ppb | 0.06 | — | — | — | — | — | 459× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
34.5 ppb | 0.15 | 80.0 | 100 | — | — | — | 230× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
21.4 ppb | 0.1 | 60.0 | 60 | — | — | — | 214× over |
| Trichloroacetic acid Disinfection byproduct |
11.1 ppb | 0.1 | — | — | — | — | — | 111× over |
| Bromodichloromethane Disinfection byproduct |
6.55 ppb | 0.06 | — | — | — | — | — | 109× over |
| Bromochloroacetic acid Disinfection byproduct |
2.09 ppb | 0.02 | — | — | — | — | — | 104× over |
| Chloroform Disinfection byproduct |
26.4 ppb | 0.4 | — | — | — | — | — | 66× over |
| Dichloroacetic acid Disinfection byproduct |
10.2 ppb | 0.2 | — | — | — | — | — | 51× over |
| Dibromochloromethane Disinfection byproduct |
1.4 ppb | 0.1 | — | — | — | — | — | 14× over |
| Dibromoacetic acid Disinfection byproduct |
0.23 ppb | 0.03 | — | — | — | — | — | 7.7× over |
| Nitrate Inorganic |
0.6 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 4.3× over |
| Uranium Radiological |
1.42 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 3.3× over |
| Nitrate and nitrite Inorganic |
0.447 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 3.2× over |
| Radium, combined (-226 and -228) Radiological |
0.13 pCi/L | 0.05 | 5.0 | — | — | — | — | 2.6× over |
| Chromium (hexavalent) Heavy metal |
0.0442 ppb | 0.02 | — | — | — | — | — | 2.2× over |
| Manganese Heavy metal |
8.21 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Vanadium Other |
1.49 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Bromoform Disinfection byproduct |
0.0347 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
4.92 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.541 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.144 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.517 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
1.2 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
CHEYENNE BOARD OF PUBLIC UTILITIES service area
This water system serves 1 community in Laramie County, Wyoming. Click any city for its dedicated tap water quality page.
Find the right filter for CHEYENNE water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.