Basin, Town of

NPDES permit WY0020028 · Minor POTW · effective, expires 2026-12-31 · 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.

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

8values over a limit
0required values missing, on 0 form(s)
0of 22 forms filed late

Last period with anything received: 2026-07-31. Most often over: E. coli (5), BOD, 5-day, 20 deg. C (2), BOD, 5-day, percent removal (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 (35)

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. 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
001pHINST MIN >= 6.5 SU all year
001pHINST MAX <= 9 SU 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
001Nitrogen, ammonia total [as N]DAILY MX report only 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 <= 1.31 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Chlorine, total residualMO AVG <= 1.125 mg/L May, Jun, Jul, Aug, Sep
001Chlorine, total residualMO AVG <= 1.38 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Chlorine, total residualDAILY MX <= .99 mg/L May, Jun, Jul, Aug, Sep
001E. coliGEO MEAN <= 126 MPN/100mL May, Jun, Jul, Aug, Sep
001E. coliGEO MEAN <= 126 MPN/100mL May, Jun, Jul, Aug, Sep
001E. coliGEO MEAN <= 630 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001E. coliGEO MEAN <= 630 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001E. coliDAILY MX <= 235 MPN/100mL May, Jun, Jul, Aug, Sep
001E. coliDAILY MX <= 235 MPN/100mL May, Jun, Jul, Aug, Sep
001E. coliDAILY MX <= 630 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001E. coliDAILY MX <= 630 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, total dissolvedDAILY MX report only all year
001FlowMO AVG <= 2.4 MGD all year
001FlowDAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 65 % all year
001Produced water, oil and greaseDAILY 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