COTTONWOOD, CITY OF

NPDES permit ID0021849 · Minor POTW · administratively continued, expires 2026-08-31 · 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.

This permit expired on 2026-08-31 and is administratively continued: 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

3values over a limit
3required values missing, on 1 form(s)
0of 18 forms filed late

Last period with anything received: 2026-04-30. Most often over: Solids, suspended percent removal (2), BOD, 5-day, percent removal (1).

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among ID permits in EPA's filings — check your permit).

Limits in force (40)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Temperature, water deg. centigradeMX DA AV report only Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 69 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 103 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001pHINST MIN >= 6.5 SU Jan, Feb, Mar, Apr, Nov, Dec
001pHINST MAX <= 9 SU Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedWKLY AVG <= 45 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 69 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedWKLY AVG <= 103 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 14.1 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 19.5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 32.3 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 44.7 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrite + Nitrate total [as N]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Phosphorus, total [as P]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001E. coli, MTEC-MFMO GEOMN <= 126 #/100mL Jan, Feb, Mar, Apr, Nov, Dec
001E. coli, MTEC-MFDAILY MX <= 576 #/100mL Jan, Feb, Mar, Apr, Nov, Dec
001E. coli, MTEC-MFDAILY MX <= 406 #/100mL (alert) Jan, Feb, Mar, Apr, Nov, Dec
001Flow, in conduit or thru treatment plantMO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Flow, in conduit or thru treatment plantMX DA AV report only Jan, Feb, Mar, Apr, Nov, Dec
001Flow, in conduit or thru treatment plantMO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Flow, in conduit or thru treatment plantMX DA AV report only Jan, Feb, Mar, Apr, Nov, Dec
001Chlorine, total residualMO AVG <= .05 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Chlorine, total residualDAILY MX <= .05 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Chlorine, total residualMO AVG <= .02 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Chlorine, total residualDAILY MX <= .04 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, percent removalMO AV MN >= 85 % Jan, Feb, Mar, Apr, Nov, Dec
001Solids, suspended percent removalMO AV MN >= 85 % Jan, Feb, Mar, Apr, Nov, Dec
RECTemperature, water deg. centigradeMO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
RECTemperature, water deg. centigradeINST MAX report only Jan, Feb, Mar, Apr, Nov, Dec
RECStream flow, instantaneousMO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
RECStream flow, instantaneousMX DA AV report only Jan, Feb, Mar, Apr, Nov, Dec
RECpHINST MAX report only Jan, Feb, Mar, Apr, Nov, Dec
RECpHINST MIN report only Jan, Feb, Mar, Apr, Nov, Dec
RECNitrogen, ammonia total [as N]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec

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