Lyman, Town of

NPDES permit WY0020117 · Minor POTW · effective, expires 2027-09-30 · 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

12values over a limit
0required values missing, on 0 form(s)
0of 50 forms filed late

Last period with anything received: 2026-06-30. Most often over: BOD, 5-day, 20 deg. C (3), BOD, 5-day, percent removal (3), pH (2).

Reporting

Reports are due about 29 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (70)

OutfallParameterStatisticLimitMonths
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. CMO AVG <= 30 mg/L all year
002BOD, 5-day, 20 deg. CWKLY AVG <= 65 mg/L all year
002BOD, 5-day, 20 deg. CWKLY AVG <= 65 mg/L all year
002BOD, 5-day, 20 deg. CDAILY MX report only all year
002BOD, 5-day, 20 deg. CDAILY MX report only all year
002BOD, 5-day, 20 deg. CDAILY MX report only all year
002BOD, 5-day, 20 deg. CDAILY MX report only all year
002BOD, 5-day, 20 deg. CMO AVG report only 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. CWKLY AVG report only all year
002pHINST MIN >= 6.5 SU all year
002pHINST MIN >= 6.5 SU all year
002pHINST MAX <= 9 SU all year
002pHINST MAX <= 9 SU all year
002Solids, total suspendedMO AVG <= 100 mg/L all year
002Solids, total suspendedMO AVG <= 100 mg/L all year
002Solids, total suspendedWKLY AVG <= 150 mg/L all year
002Solids, total suspendedWKLY AVG <= 150 mg/L all year
002Solids, total suspendedDAILY MX report only all year
002Solids, total suspendedDAILY MX report only all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Nitrite + Nitrate total [as N]DAILY MX report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Chlorine, total residualMO AVG <= .011 mg/L all year
002Chlorine, total residualMO AVG <= .011 mg/L all year
002Chlorine, total residualDAILY MX <= .019 mg/L all year
002Chlorine, total residualDAILY MX <= .019 mg/L all year
002E. coliMO GEOMN <= 126 #/100mL May, Jun, Jul, Aug, Sep
002E. coliMO GEOMN <= 126 #/100mL May, Jun, Jul, Aug, Sep
002E. coliMO GEOMN <= 630 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
002E. coliMO GEOMN <= 630 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
002E. coliDAILY MX <= 576 #/100mL May, Jun, Jul, Aug, Sep
002E. coliDAILY MX <= 576 #/100mL May, Jun, Jul, Aug, Sep
002E. coliDAILY MX <= 630 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
002E. coliDAILY MX <= 630 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
002Solids, total dissolvedDAILY MX report only all year
002Solids, total dissolvedDAILY MX report only all year
002Solids, total dissolvedMO AVG report only all year
002Solids, total dissolvedMO AVG report only all year
002Solids, total dissolvedANNL MAX <= 366 ton/yr all year
002FlowDAILY MX report only all year
002FlowDAILY MX report only all year
002FlowMO AVG report only all year
002FlowMO AVG report only all year
002BOD, 5-day, percent removalMO AV MN >= 65 % all year
002BOD, 5-day, percent removalMO AV MN >= 65 % all year
002Produced water, oil and greaseDAILY MX <= 10 mg/L all year
002Produced water, oil and greaseDAILY MX <= 10 mg/L all year
003pHINST MIN >= 6.5 SU all year
003pHINST MAX <= 9 SU all year
003Solids, total suspendedMO AVG <= 100 mg/L all year
003Solids, total suspendedWKLY AVG <= 150 mg/L all year
003Solids, total suspendedDAILY MX report only all year
003Solids, total dissolved [TDS]DAILY MX <= 5000 mg/L all year
003FlowMO AVG report only all year
003FlowMO AVG report only all year
003FlowDAILY MX report only all year
003FlowDAILY MX report only all year
003Produced water, oil and greaseDAILY MX <= 10 mg/L all year
CRS1Solids, total dissolvedDAILY MX report only all year
CRS1Solids, total dissolvedDAILY MX report only all year
CRS2Solids, total dissolvedDAILY MX report only all year
CRS2Solids, total dissolvedDAILY MX report only all year
DMP1Temperature, water deg. centigradeDAILY MX report only all year
DMP1pHINST MIN report only all year
DMP1pHINST MAX report only all year
DMP1Nitrogen, 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