Laramie County Water Quality

Name: Laramie County Water Quality Data (2026)
Creator: PurityMap
License: https://creativecommons.org/licenses/by/4.0/

Laramie County, Wyoming: one city report built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.

Find my system Open on the map Private wells in Laramie County

Across the county's systems

Highest result for each contaminant

One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.

Lead (90th percentile)CHEYENNE BOARD OF PUBLIC UTILITIES15 µg/L federal action level · US EPA15 µg/L

CHEYENNE BOARD OF PUBLIC UTILITIES15 µg/LMonitoring period: 2025–2025

LithiumCHEYENNE BOARD OF PUBLIC UTILITIES10 µg/L EPA health reference level (screening, not a legal limit) · US EPA9.56 µg/L

CHEYENNE BOARD OF PUBLIC UTILITIES9.56 µg/LSample date: 2023-10-25 to 2024-07-29

29 PFAS tested, none detected in this systemShow

Tested in this system: CHEYENNE BOARD OF PUBLIC UTILITIES

11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
Perfluoro-3-methoxypropanoic acid (PFMPA)
Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanoic acid (PFNA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid (PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)

1 city

Cities ranked by the records

1
CheyenneCHEYENNE BOARD OF PUBLIC UTILITIES
No PFAS detectedLead below action level
Open city report →

Showing 1 of 1 cities · scores are system-level, not tap tests

Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.

PFAS in Laramie CountyPFAS detected in 0 of 1 city; none above a federal limit

4.0 ng/L federal MCL · PFOS, ng/LPFAS in Wyoming

Lead

0of 1 city above the 15 µg/L action level

Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.

Lead in Wyoming

Who supplies the county

Largest water systems

CheyenneCHEYENNE BOARD OF PUBLIC UTILITIES · WY5600011
64,165 served

Questions

Frequently asked

How does Laramie County tap water compare across cities?

PurityMap ranks 1 city in Laramie County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Cheyenne's main water system: CHEYENNE BOARD OF PUBLIC UTILITIES · PWSID WY5600011 · Purity Score 83 (Good) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.

How many Laramie County cities have PFAS above the federal limit?

None of the 1 Laramie County cities on record had a regulated PFAS above the 2024 federal limit in EPA's UCMR 5 testing. PFAS were detected below the limit in 0.

Is there lead in Laramie County tap water?

Utilities report lead as a 90th-percentile result from home taps. 1 of 1 Laramie County cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.

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