Rawlins, City of

NPDES permit WY0020427 · Major POTW · expired, expires 2026-04-30 · 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.

This permit expired on 2026-04-30 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

2values over a limit
0required values missing, on 0 form(s)
0of 38 forms filed late

Last period with anything received: 2026-08-31. Most often over: Solids, suspended percent removal (2).

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 (69)

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 report only all year
001Solids, total suspendedWKLY AVG report only all year
001Solids, total suspendedDAILY MX report only 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
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 CFU/100mL Apr, May, Jun, Jul, Aug, Sep
001E. coliDAILY MX <= 630 CFU/100mL Jan, Feb, Mar, Oct, Nov, Dec
001E. coliDAILY MX <= 576 CFU/100mL Apr, May, Jun, Jul, Aug, Sep
001E. coliMO GEOMN <= 630 CFU/100mL Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, Ammonia TotalDAILY MX report only all year
001Solids, total dissolvedDAILY MX report only all year
001FlowMO AVG report only all year
001FlowDAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 65 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Produced water, oil and greaseDAILY MX report only all year
001Pass/Fail Static 48Hr Acute Ceriodaphnia dubia4C = 0 pass=0;fail=1 all year
001Pass/Fail Static 96 Hr Acute Pimephales Promelas9D = 0 pass=0;fail=1 all year
002Temperature, water deg. centigradeDAILY MX report only all year
002Oxygen, dissolved [DO]DAILY MX report only all year
002BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
002BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
002BOD, 5-day, 20 deg. CDAILY MX <= 90 mg/L all year
002BOD, 5-day, 20 deg. CMO AVG report only all year
002BOD, 5-day, 20 deg. CWKLY AVG report only all year
002BOD, 5-day, 20 deg. CDAILY MX report only all year
002pHINST MIN >= 6.5 SU all year
002pHINST MAX <= 9 SU all year
002Solids, total suspendedMO AVG report only all year
002Solids, total suspendedWKLY AVG report only all year
002Solids, total suspendedDAILY MX report only all year
002Solids, total suspendedMO AVG <= 100 mg/L all year
002Solids, total suspendedWKLY AVG <= 150 mg/L all year
002Solids, total suspendedDAILY MX <= 300 mg/L all year
002Nitrite + Nitrate total [as N]DAILY MX report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002DurationMO TOTAL report only all year
002Chlorine, total residualDAILY MX <= .011 mg/L all year
002E. coliDAILY MX <= 630 CFU/100mL Jan, Feb, Mar, Oct, Nov, Dec
002E. coliMO GEOMN <= 126 CFU/100mL Apr, May, Jun, Jul, Aug, Sep
002E. coliMO GEOMN <= 126 #/100mL Apr, May, Jun, Jul, Aug, Sep
002E. coliMO GEOMN <= 630 #/100mL Jan, Feb, Mar, Oct, Nov, Dec
002E. coliMO AVG <= 630 CFU/100mL Jan, Feb, Mar, Oct, Nov, Dec
002E. coliDAILY MX <= 576 CFU/100mL Apr, May, Jun, Jul, Aug, Sep
002E. coliDAILY MX <= 576 #/100mL Apr, May, Jun, Jul, Aug, Sep
002E. coliDAILY MX <= 630 #/100mL Jan, Feb, Mar, Oct, Nov, Dec
002Nitrogen, Ammonia TotalDAILY MX report only all year
002Solids, total dissolvedDAILY MX report only all year
002FlowMO AVG report only all year
002FlowDAILY MX report only all year
002BOD, 5-day, percent removalMO AV MN >= 65 % all year
002Produced water, oil and greaseDAILY MX report only all year
002Pass/Fail Static 48Hr Acute Ceriodaphnia dubia4C = 0 pass=0;fail=1 all year
002Pass/Fail Static 96 Hr Acute Pimephales Promelas9D = 0 pass=0;fail=1 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