Byron, Town of

NPDES permit WY0020281 · Minor POTW · effective, expires 2029-03-31 · 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.

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

4values over a limit
21required values missing, on 1 form(s)
8of 12 forms filed late

Last period with anything received: 2026-06-30. Most often over: E. coli (4).

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 (47)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeMO AVG report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L 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. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX report only 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. CMO AVG report only all year
001BOD, 5-day, 20 deg. CWKLY 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
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHINST MIN >= 6.5 SU all year
001pHINST MIN >= 6.5 SU all year
001pHINST MAX <= 9 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 100 mg/L all year
001Solids, total suspendedMO AVG <= 100 mg/L all year
001Solids, total suspendedWKLY AVG <= 150 mg/L all year
001Solids, total suspendedWKLY AVG <= 150 mg/L all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedDAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001DurationMO TOTAL report only all year
001DurationMO TOTAL report only all year
001Chlorine, total residualDAILY MX <= 2 mg/L all year
001Chlorine, total residualDAILY MX <= 2 mg/L all year
001E. coliMO GEOMN <= 630 #/100mL Jan, Feb, Mar, Oct, Nov, Dec
001E. coliMO GEOMN <= 630 #/100mL Jan, Feb, Mar, Oct, Nov, Dec
001E. coliMO GEOMN <= 126 #/100mL Apr, May, Jun, Jul, Aug, Sep
001E. coliMO GEOMN <= 126 #/100mL Apr, May, Jun, Jul, Aug, Sep
001E. coliDAILY MX <= 630 #/100mL Jan, Feb, Mar, Oct, Nov, Dec
001E. coliDAILY MX <= 630 #/100mL Jan, Feb, Mar, Oct, Nov, Dec
001E. coliDAILY MX <= 576 #/100mL Apr, May, Jun, Jul, Aug, Sep
001E. coliDAILY MX <= 576 #/100mL Apr, May, Jun, Jul, Aug, Sep
001FlowMO AVG <= .177 MGD all year
001FlowMO AVG <= .177 MGD all year
001FlowDAILY MX report only all year
001FlowDAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 65 % all year
001BOD, 5-day, percent removalMO AV MN >= 65 % all year
001Produced water, oil and greaseDAILY MX <= 10 mg/L all year
001Produced 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