Cheyenne Board of Public Utilities

NPDES permit WY0031721 · Minor NON-POTW · effective, expires 2030-06-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

7values over a limit
0required values missing, on 0 form(s)
0of 49 forms filed late

Last period with anything received: 2026-06-30. Most often over: Solids, total suspended (7).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among WY permits in EPA's filings — check your permit).

Limits in force (11)

OutfallParameterStatisticLimitMonths
005pHINST MIN >= 6.5 SU all year
005pHINST MAX <= 9 SU all year
005Solids, total suspendedMO AVG <= 20 mg/L all year
005Solids, total suspendedWKLY AVG <= 30 mg/L all year
005Solids, total suspendedDAILY MX <= 45 mg/L all year
005TrichloroethyleneDAILY MX <= 2.5 ug/L all year
005DurationMO TOTAL report only all year
005Chlorine, total residualDAILY MX <= .011 mg/L all year
005Flow, totalMO AVG report only all year
005Flow, totalDAILY MX report only all year
DMP1TrichloroethyleneDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states