Sheridan, City of

NPDES permit WY0001392 · Minor NON-POTW · administratively continued, expires 2026-06-30 · 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.

This permit expired on 2026-06-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
0required values missing, on 0 form(s)
20of 20 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (28)

OutfallParameterStatisticLimitMonths
001pHINST MIN >= 6.5 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedWKLY AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Phosphorus, total [as P]DAILY MX report only all year
001Sodium, dissolved [as Na]DAILY MN report only all year
001Aluminum, dissolved [as Al]DAILY MX <= 750 ug/L all year
001DurationMO TOTAL report only all year
001Chlorine, total residualDAILY MX <= .019 mg/L all year
001FlowMO AVG report only all year
001FlowDAILY MX report only all year
001SulfateDAILY MX report only all year
001Produced water, oil and greaseDAILY MX <= 10 mg/L all year
002pHINST MIN >= 6.5 SU all year
002pHINST MAX <= 9 SU all year
002Solids, total suspendedMO AVG <= 20 mg/L all year
002Solids, total suspendedWKLY AVG <= 30 mg/L all year
002Solids, total suspendedDAILY MX <= 45 mg/L all year
002Phosphorus, total [as P]DAILY MX report only all year
002Sodium, dissolved [as Na]DAILY MN report only all year
002Aluminum, dissolved [as Al]DAILY MX <= 750 ug/L all year
002DurationMO TOTAL report only all year
002Chlorine, total residualDAILY MX <= .019 mg/L all year
002FlowMO AVG report only all year
002FlowDAILY MX report only all year
002SulfateDAILY MX report only all year
002Produced water, oil and greaseDAILY MX <= 10 mg/L 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