COLBY, CITY OF

NPDES permit KS0098698 · 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

1values over a limit
0required values missing, on 0 form(s)
0of 44 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (1).

Reporting

Reports are due about 29 days after each monitoring period ends (the most common figure among KS permits in EPA's filings — check your permit).

Limits in force (75)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MN WK AV >= 6 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Jan
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Dec
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Mar
001BOD, 5-day, 20 deg. CMO AVG <= 20 mg/L Sep
001BOD, 5-day, 20 deg. CMO AVG <= 25 mg/L Oct
001BOD, 5-day, 20 deg. CMO AVG <= 20 mg/L Jun
001BOD, 5-day, 20 deg. CMO AVG <= 20 mg/L Jul
001BOD, 5-day, 20 deg. CMO AVG <= 20 mg/L Aug
001BOD, 5-day, 20 deg. CMO AVG <= 20 mg/L May
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Nov
001BOD, 5-day, 20 deg. CMO AVG <= 25 mg/L Apr
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Feb
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Jan
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Dec
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Mar
001BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L Sep
001BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L Oct
001BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L Jun
001BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L Jul
001BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L Aug
001BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L May
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Nov
001BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L Apr
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Feb
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedMX WK AV <= 45 mg/L all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= .9 mg/L Jul
001Nitrogen, ammonia total [as N]MO AVG <= 2.9 mg/L Dec
001Nitrogen, ammonia total [as N]MO AVG <= 2.1 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 2.8 mg/L Mar
001Nitrogen, ammonia total [as N]MO AVG <= 2.9 mg/L Nov
001Nitrogen, ammonia total [as N]MO AVG <= 2.9 mg/L Jan
001Nitrogen, ammonia total [as N]MO AVG <= 1.1 mg/L Aug
001Nitrogen, ammonia total [as N]MO AVG <= 2.9 mg/L Feb
001Nitrogen, ammonia total [as N]MO AVG <= 1.4 mg/L Sep
001Nitrogen, ammonia total [as N]MO AVG <= 2.3 mg/L Oct
001Nitrogen, ammonia total [as N]MO AVG <= 1.4 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 1.1 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 2.8 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 9.3 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 8.2 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 9.3 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 9.3 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 9.3 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 3.7 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 9.3 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 5 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 9.1 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 4.9 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 3.8 mg/L Jun
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Arsenic, total [as As]MO AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001E. coliMO GEO <= 3843 #/100mL all year
001Nitrogen, Total As NDAILY AV report only all year
001Nitrogen, Total As NDG <= 66.5 lb/d all year
001Phosphorus, Total As PDAILY AV report only all year
001Phosphorus, Total As PDG report only all year
002Chlorine, total residualMN WK AV >= .1 mg/L all year
002E. coliMO GEO <= 262 #/100mL all year
003Chlorine, total residualMN WK AV >= .1 mg/L all year
003E. coliMO GEO <= 262 #/100mL all year
004BOD, 5-day, 20 deg. CMO AVG report only all year
004Solids, total suspendedMO AVG report only all year
004Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
004Phosphorus, total [as P]MO AVG report only all year
004Flow, in conduit or thru treatment plantMO AVG 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