Powell, City of

NPDES permit WY0020648 · Major POTW · effective, expires 2028-04-30 · 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

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

Last period with anything received: 2026-07-31.

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 (79)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001Temperature, water deg. centigradeMO AVG 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 report only 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 report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 1.16 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 1.13 mg/L Dec
001Nitrogen, ammonia total [as N]MO AVG <= 1.26 mg/L Mar
001Nitrogen, ammonia total [as N]MO AVG <= 1.21 mg/L Jun
001Nitrogen, ammonia total [as N]MO AVG <= 1.16 mg/L Jan
001Nitrogen, ammonia total [as N]MO AVG <= 1.32 mg/L Jul
001Nitrogen, ammonia total [as N]MO AVG <= 2.14 mg/L Oct
001Nitrogen, ammonia total [as N]MO AVG <= .98 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 1.94 mg/L Sep
001Nitrogen, ammonia total [as N]MO AVG <= 1.65 mg/L Aug
001Nitrogen, ammonia total [as N]MO AVG <= 1.21 mg/L Feb
001Nitrogen, ammonia total [as N]MO AVG <= 1.6 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 3.17 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 2.4 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 2.66 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 3.85 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 2.37 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 5.72 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 4.54 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 2.07 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 5.31 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 6.12 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 2.56 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 3.39 mg/L Nov
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 <= .011 mg/L all year
001E. coliMO GEOMN <= 126 #/100mL May, Jun, Jul, Aug, Sep
001E. coliMO GEOMN <= 630 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001E. coliDAILY MX <= 235 #/100mL May, Jun, Jul, Aug, Sep
001E. coliDAILY MX <= 630 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, total dissolvedDAILY MX report only all year
001FlowMO AVG <= 1.5 MGD Nov
001FlowMO AVG <= 4.9 MGD Jun
001FlowMO AVG <= 4.9 MGD Sep
001FlowMO AVG <= 4.9 MGD Aug
001FlowMO AVG <= 1.5 MGD Oct
001FlowMO AVG <= 1.5 MGD Mar
001FlowMO AVG <= 1.5 MGD Jan
001FlowMO AVG <= 4.9 gal/d Apr
001FlowMO AVG <= 4.9 MGD May
001FlowMO AVG <= 4.9 MGD Jul
001FlowMO AVG <= 1.5 MGD Feb
001FlowMO AVG <= 1.5 MGD Dec
001FlowDAILY MX report only Nov
001FlowDAILY MX report only Jun
001FlowDAILY MX report only Sep
001FlowDAILY MX report only Aug
001FlowDAILY MX report only Oct
001FlowDAILY MX report only Mar
001FlowDAILY MX report only Jan
001FlowDAILY MX report only Apr
001FlowDAILY MX report only May
001FlowDAILY MX report only Jul
001FlowDAILY MX report only Feb
001FlowDAILY MX report only Dec
001BOD, 5-day, percent removalMO AV MN >= 65 % all year
001Produced water, oil and greaseDAILY MX <= 10 mg/L all year
001Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7E <= 0 pass=0;fail=1 all year
001Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7E <= 0 pass=0;fail=1 all year
UMP1Temperature, water deg. centigradeDAILY MX report only all year
UMP1pHINST MIN report only all year
UMP1pHINST MAX report only all year
UMP1Nitrogen, ammonia total [as N]DAILY 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