- EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
- Lithium: found in 1 of 8 samples, average 1.2 µg/L, highest 9.56 µg/L (EPA UCMR 5 testing, Oct 2023–Jul 2024)
- Lead: 9 in 10 homes tested came in at or below 15 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2025–Dec 31, 2025). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
Public EPA test results
Can you drink Cheyenne tap water? What EPA records show
EPA system ID WY5600011 · serves Cheyenne, WY · about 64,165 people (EPA records)
Here's what EPA has on file for this water system: its testing for newer contaminants like PFAS (UCMR 5), lead testing and violations. It's not a test of your tap, and there's no Water Score here.
Public EPA test results
Cheyenne Board of Public Utilities (EPA WY5600011)
EPA data as of October 14, 2026. For Cheyenne's main utility, Cheyenne Board of Public Utilities: We found no health-standard violations in EPA's records for this system (WY5600011) since July 1, 2021, as of October 14, 2026. PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
What EPA records show for Cheyenne Board of Public Utilities, as of October 14, 2026
We found no health-standard violations in EPA's records for this system (WY5600011) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Cheyenne Board of Public Utilities (SDWIS). Data as of October 14, 2026.
Lead: 9 in 10 homes tested came in at or below 15 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2025–Dec 31, 2025). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Cheyenne Board of Public Utilities use chloramine?
We didn't find chloramine in Cheyenne Board of Public Utilities's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)
Source: EPA SDWIS (ECHO SDWA bulk download), data as of Oct 14, 2026
Source: EPA UCMR 5 occurrence data, data as of Oct 15, 2026
These are EPA's public records for this water system, shown as of October 14, 2026. If you represent this utility, or think a record here is wrong, tell us: Report an error. If the error is in EPA's own records, your state drinking water program can correct it there, and this page updates at our next data refresh.
Sources
- EPA ECHO detailed facility report: Cheyenne Board of Public Utilities (WY5600011), July to September 2026 extract
- EPA SDWIS (ECHO SDWA bulk download), July to September 2026 extract
- EPA UCMR 5 occurrence data, samples through June 2026
Questions people ask
Is Cheyenne tap water safe to drink?
We don't give a safe or unsafe verdict. Here is what the public data shows: EPA records for Cheyenne's main utility, Cheyenne Board of Public Utilities, as of October 14, 2026. We found no health-standard violations in EPA's records for this system (WY5600011) since July 1, 2021, as of October 14, 2026. PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing. A guideline and a legal limit are different things, and this is public data, not a test of your tap.
Which utility supplies water in Cheyenne?
Cheyenne Board of Public Utilities is the main utility for Cheyenne in EPA's records (EPA WY5600011), serving about 64,165 people (EPA SDWIS). Your water bill names your utility.
Does Cheyenne tap water contain PFAS?
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing. This is public data, not a test of your tap.
How recent is this data?
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026. Data may be one to three years old and may not reflect the water at your tap. If you want your own tap tested, use a state-certified laboratory.
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