Lander, City of

NPDES permit WY0020389 · 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

16values over a limit
0required values missing, on 0 form(s)
0of 38 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (11), pH (4), Solids, suspended percent removal (1).

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 (96)

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
001Nitrogen, ammonia total [as N]MO AVG <= 2.74 mg/L Sep
001Nitrogen, ammonia total [as N]MO AVG <= 10.11 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 9.93 mg/L Aug
001Nitrogen, ammonia total [as N]MO AVG <= 7.13 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 9.57 mg/L Mar
001Nitrogen, ammonia total [as N]MO AVG <= 3.63 mg/L Feb
001Nitrogen, ammonia total [as N]MO AVG <= 4.78 mg/L Dec
001Nitrogen, ammonia total [as N]MO AVG <= 7.53 mg/L Jun
001Nitrogen, ammonia total [as N]MO AVG <= 5.6 mg/L (alert) Nov
001Nitrogen, ammonia total [as N]MO AVG <= 4.7 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 7.01 mg/L Jul
001Nitrogen, ammonia total [as N]MO AVG <= 4.39 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 5.24 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 24.44 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 2.65 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 17.25 mg/L Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 22.14 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX < 8.4 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 10.79 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 29.47 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX < 13.54 mg/L (alert) Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 20.53 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 2.03 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 10.14 mg/L Jan
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 AVG <= 481 #/100mL Jun
001E. coliMO AVG <= 1574 #/100mL Oct
001E. coliMO AVG <= 1240 #/100mL Nov
001E. coliMO GEOMN <= 932 #/100mL Feb
001E. coliMO AVG <= 1244 #/100mL Dec
001E. coliMO AVG <= 2424 #/100mL Mar
001E. coliMO AVG <= 140 #/100mL Sep
001E. coliMO AVG <= 207 #/100mL Aug
001E. coliMO GEOMN <= 1121 #/100mL Jan
001E. coliMO AVG <= 2222 #/100mL Apr
001E. coliMO AVG <= 245 #/100mL May
001E. coliMO AVG <= 214 #/100mL Jul
001E. coliDAILY MX <= 1230 #/100mL Jun
001E. coliDAILY MX <= 1574 #/100mL Oct
001E. coliDAILY MX <= 1240 #/100mL Nov
001E. coliDAILY MX <= 932 #/100mL Feb
001E. coliDAILY MX <= 1244 #/100mL Dec
001E. coliDAILY MX <= 2424 #/100mL Mar
001E. coliDAILY MX <= 274 #/100mL Sep
001E. coliDAILY MX <= 511 #/100mL Aug
001E. coliDAILY MX <= 1121 #/100mL Jan
001E. coliDAILY MX <= 2222 #/100mL Apr
001E. coliDAILY MX <= 611 #/100mL May
001E. coliDAILY MX <= 529 #/100mL Jul
001Solids, total dissolvedDAILY MX report only all year
001FlowMO AVG <= 3.5 MGD Jul
001FlowMO AVG <= 5 MGD May, Jun
001FlowMO AVG <= 2 MGD Aug, Sep, Oct
001FlowMO AVG <= 1.8 MGD Jan, Feb, Mar, Nov, Dec
001FlowMO AVG <= 4 MGD Apr
001FlowDAILY MX report only Jul
001FlowDAILY MX report only May, Jun
001FlowDAILY MX report only Aug, Sep, Oct
001FlowDAILY MX report only Jan, Feb, Mar, Nov, Dec
001FlowDAILY MX report only Apr
001BOD, 5-day, percent removalMO AV MN >= 65 % all year
001Solids, suspended percent removalMO AV MN >= 65 % all year
001Produced water, oil and greaseDAILY MX report only all year
001Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7E = 0 pass=0;fail=1 all year
001Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7E = 0 pass=0;fail=1 all year
DMP1Temperature, water deg. centigradeMO AVG report only all year
DMP1Temperature, water deg. centigradeMO AVG report only all year
DMP1Temperature, water deg. centigradeDAILY MX report only all year
DMP1Temperature, water deg. centigradeDAILY MX report only all year
DMP1pHINST MIN report only all year
DMP1pHINST MIN report only all year
DMP1pHINST MAX report only all year
DMP1pHINST MAX report only all year
UMP1E. coliDAILY MX report only all year
UMP1E. coliDAILY MX report only all year
UMP1FlowDAILY MX report only all year
UMP1FlowDAILY 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