Ten Sleep, Town of

NPDES permit WY0020168 · Minor POTW · expired, expires 2025-03-31 · 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 2025-03-31 and is expired: 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

1values over a limit
0required values missing, on 0 form(s)
0of 21 forms filed late

Last period with anything received: 2026-06-30. Most often over: BOD, 5-day, 20 deg. C (1).

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 (33)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001Oxygen, dissolved [DO]DAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 90 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CWKLY AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHINST MIN >= 6.5 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 100 mg/L all year
001Solids, total suspendedWKLY AVG <= 150 mg/L all year
001Solids, total suspendedDAILY MX <= 300 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 114.4 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 53.6 mg/L all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001DurationMO TOTAL report only all year
001Chlorine, total residualDAILY MX <= .44 mg/L May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualDAILY MX <= .39 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Chlorine, total residualMO AVG <= .25 mg/L May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualMO AVG <= .23 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001E. coliMO GEOMN <= 12062 MPN/100mL Jan, Feb, Mar, Apr, Nov, Dec
001E. coliMO GEOMN <= 1795 MPN/100mL May, Jun, Jul, Aug, Sep, Oct
001E. coliDAILY MX <= 12062 MPN/100mL Jan, Feb, Mar, Apr, Nov, Dec
001E. coliDAILY MX <= 5746 MPN/100mL May, Jun, Jul, Aug, Sep, Oct
001Solids, total dissolvedDAILY MX report only all year
001FlowDAILY MX <= .2 MGD all year
001FlowMO AVG report only all year
001BOD, 5-day, percent removalMO AV MN >= 65 % all year
001Produced water, oil and greaseDAILY MX report only all year
DMP1Temperature, water deg. centigradeINST MAX report only all year
DMP1pHINST MAX 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