Western Sugar Cooperative

NPDES permit CO0041351 · Major NON-POTW · administratively continued, expires 2017-02-28 · 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 2017-02-28 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

77values over a limit
0required values missing, on 0 form(s)
0of 93 forms filed late

Last period with anything received: 2026-07-31. Most often over: Coliform, fecal general (22), BOD, 5-day, 20 deg. C (15), pH (13).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among CO permits in EPA's filings — check your permit).

Limits in force (221)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMX WK AV <= 27.5 deg C Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Temperature, water deg. centigradeMX WK AV <= 13.7 deg C Jan, Feb, Dec
001Temperature, water deg. centigradeDAILY MX <= 28.6 deg C Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Temperature, water deg. centigradeDAILY MX <= 14.3 deg C Jan, Feb, Dec
001Conductivity30DA AVG report only all year
001BOD, 5-day, 20 deg. C30DA AVG <= 3300 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 4950 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Bicarbonate ion- [as HCO3]30DA AVG report only all year
001Bicarbonate ion- [as HCO3]DAILY MX report only all year
001Solids, total suspended30DA AVG <= 3300 lb/d all year
001Solids, total suspendedDAILY MX <= 4950 lb/d all year
001Nitrogen, ammonia total [as N]30DA AVG report only Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 10 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG report only Aug
001Nitrogen, ammonia total [as N]30DA AVG report only Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 30 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 23 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 14 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 30 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 27 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG report only May
001Nitrogen, ammonia total [as N]30DA AVG report only Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 30 mg/L Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 21 mg/L Jan
001Nitrogen, ammonia total [as N]30DA AVG <= 19 mg/L Feb
001Nitrogen, ammonia total [as N]30DA AVG <= 10.6 mg/L Mar
001Nitrogen, ammonia total [as N]30DA AVG <= 11 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 8 mg/L May
001Nitrogen, ammonia total [as N]30DA AVG <= 10 mg/L Jun
001Nitrogen, ammonia total [as N]30DA AVG <= 3.4 mg/L Jul
001Nitrogen, ammonia total [as N]30DA AVG <= 11 mg/L Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 6.2 mg/L Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 9 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 19 mg/L Nov
001Nitrogen, ammonia total [as N]30DA AVG <= 19 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX report only Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 23 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX report only Aug
001Nitrogen, ammonia total [as N]DAILY MX report only Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 30 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 30 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 26 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 30 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 30 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX report only May
001Nitrogen, ammonia total [as N]DAILY MX report only Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 30 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 36 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 34 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 28 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 26 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 12 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 48 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 17 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 90 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 16 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 27 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 40 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 25 mg/L Dec
001Cyanide, weak acid, dissociableDAILY MX report only all year
001Calcium, total recoverable30DA AVG report only all year
001Calcium, total recoverableDAILY MX report only all year
001Magnesium, total recoverable30DA AVG report only all year
001Magnesium, total recoverableDAILY MX report only all year
001Sodium, total recoverable30DA AVG report only all year
001Sodium, total recoverableDAILY MX report only all year
001Sodium adsorption ratio30DA AVG report only all year
001Sodium adsorption ratio30DA AVG report only all year
001Sodium adsorption ratioDAILY MX report only all year
001Sodium adsorption ratio30DA AVG report only all year
001Sodium adsorption ratioDAILY MX report only all year
001Chloride [as Cl]30DA AVG report only all year
001Chloride [as Cl]30DA AVG <= 593 mg/L all year
001Arsenic, total recoverable30DA AVG report only all year
001Iron, total recoverable30DA AVG report only all year
001Chromium, total recoverableDAILY MX report only all year
001Zinc, potentially dissolved30DA AVG report only all year
001Zinc, potentially dissolvedDAILY MX report only all year
001Silver, potentially dissolved30DA AVG report only all year
001Silver, potentially dissolvedDAILY MX report only all year
001Copper, potentially dissolved30DA AVG report only all year
001Copper, potentially dissolvedDAILY MX report only all year
001Arsenic, potentially dissolvedDAILY MX report only all year
001Cadmium, potentially dissolvd30DA AVG report only all year
001Cadmium, potentially dissolvdDAILY MX report only all year
001Lead, potentially dissolvd30DA AVG report only all year
001Lead, potentially dissolvdDAILY MX report only all year
001Manganese, potentially dissolvd30DA AVG report only all year
001Manganese, potentially dissolvdDAILY MX report only all year
001Nickel, potentially dissolvd30DA AVG report only all year
001Nickel, potentially dissolvdDAILY MX report only all year
001Selenium, potentially dissolvd30DA AVG report only all year
001Selenium, potentially dissolvdDAILY MX report only all year
001Oil and greaseINST MAX <= 10 mg/L all year
001Chromium, trivalent total recoverableDAILY MX report only all year
001Chlorpyrifos30DA AVG report only all year
001ChlorpyrifosDAILY MX report only all year
001Aldicarb30DA AVG report only all year
001Flow, in conduit or thru treatment plant30DA AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
001Sulfide-hydrogen sulfide [undissociated]30DA AVG <= .008 mg/L all year
001Mercury, total [as Hg]30DA AVG report only all year
001Coliform, fecal general30DA GM <= 400 #/100mL all year
001Coliform, fecal generalMX 7D GM <= 400 #/100mL all year
001Boron, total30DA AVG report only all year
001Oil and grease visualINST MAX report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
001Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 14 tox chronic all year
001Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only all year
001Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 14 tox chronic all year
002Flow, in conduit or thru treatment plant30DA AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Volatile Organic Compound [VOC]30DA AVG report only Mar, Dec
002Volatile Organic Compound [VOC]DAILY MX report only Mar, Dec
003Flow, in conduit or thru treatment plant30DA AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Volatile Organic Compound [VOC]30DA AVG report only Mar, Dec
003Volatile Organic Compound [VOC]DAILY MX report only Mar, Dec
004Flow, in conduit or thru treatment plant30DA AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Volatile Organic Compound [VOC]30DA AVG report only Mar, Dec
004Volatile Organic Compound [VOC]DAILY MX report only Mar, Dec
005Flow, in conduit or thru treatment plant30DA AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Volatile Organic Compound [VOC]30DA AVG report only Mar, Dec
005Volatile Organic Compound [VOC]DAILY MX report only Mar, Dec
006Conductivity30DA AVG report only all year
006BOD, 5-day, 20 deg. C30DA AVG <= 3300 lb/d all year
006BOD, 5-day, 20 deg. CDAILY MX <= 4950 lb/d all year
006pHMINIMUM >= 6.5 SU all year
006pHMAXIMUM <= 9 SU all year
006Bicarbonate ion- [as HCO3]30DA AVG report only all year
006Bicarbonate ion- [as HCO3]DAILY MX report only all year
006Nitrogen, ammonia total [as N]30DA AVG report only all year
006Nitrogen, ammonia total [as N]30DA AVG <= 21 mg/L Jan
006Nitrogen, ammonia total [as N]30DA AVG <= 19 mg/L Feb
006Nitrogen, ammonia total [as N]30DA AVG <= 10.6 mg/L Mar
006Nitrogen, ammonia total [as N]30DA AVG <= 11 mg/L Apr
006Nitrogen, ammonia total [as N]30DA AVG <= 8 mg/L May
006Nitrogen, ammonia total [as N]30DA AVG <= 10 mg/L Jun
006Nitrogen, ammonia total [as N]30DA AVG <= 3.4 mg/L Jul
006Nitrogen, ammonia total [as N]30DA AVG <= 11 mg/L Aug
006Nitrogen, ammonia total [as N]30DA AVG <= 6.2 mg/L Sep
006Nitrogen, ammonia total [as N]30DA AVG <= 9 mg/L Oct
006Nitrogen, ammonia total [as N]30DA AVG <= 19 mg/L Nov
006Nitrogen, ammonia total [as N]30DA AVG <= 19 mg/L Dec
006Nitrogen, ammonia total [as N]DAILY MX report only all year
006Nitrogen, ammonia total [as N]DAILY MX <= 36 mg/L Jan
006Nitrogen, ammonia total [as N]DAILY MX <= 34 mg/L Feb
006Nitrogen, ammonia total [as N]DAILY MX <= 28 mg/L Mar
006Nitrogen, ammonia total [as N]DAILY MX <= 26 mg/L Apr
006Nitrogen, ammonia total [as N]DAILY MX <= 12 mg/L May
006Nitrogen, ammonia total [as N]DAILY MX <= 48 mg/L Jun
006Nitrogen, ammonia total [as N]DAILY MX <= 17 mg/L Jul
006Nitrogen, ammonia total [as N]DAILY MX <= 90 mg/L Aug
006Nitrogen, ammonia total [as N]DAILY MX <= 16 mg/L Sep
006Nitrogen, ammonia total [as N]DAILY MX <= 27 mg/L Oct
006Nitrogen, ammonia total [as N]DAILY MX <= 40 mg/L Nov
006Nitrogen, ammonia total [as N]DAILY MX <= 25 mg/L Dec
006Nitrogen, nitrite total [as N]DAILY MX report only all year
006Cyanide, weak acid, dissociableDAILY MX report only all year
006Calcium, total recoverable30DA AVG report only all year
006Calcium, total recoverableDAILY MX report only all year
006Magnesium, total recoverable30DA AVG report only all year
006Magnesium, total recoverableDAILY MX report only all year
006Sodium, total recoverable30DA AVG report only all year
006Sodium, total recoverableDAILY MX report only all year
006Sodium adsorption ratio30DA AVG report only all year
006Sodium adsorption ratio30DA AVG report only all year
006Sodium adsorption ratioDAILY MX report only all year
006Sodium adsorption ratio30DA AVG report only all year
006Sodium adsorption ratioDAILY MX report only all year
006Chloride [as Cl]30DA AVG <= 593 mg/L all year
006Arsenic, total recoverable30DA AVG report only all year
006Iron, total recoverableDAILY MX report only all year
006Chromium, total recoverableDAILY MX report only all year
006Zinc, potentially dissolved30DA AVG report only all year
006Zinc, potentially dissolvedDAILY MX report only all year
006Silver, potentially dissolved30DA AVG report only all year
006Silver, potentially dissolvedDAILY MX report only all year
006Copper, potentially dissolved30DA AVG report only all year
006Copper, potentially dissolvedDAILY MX report only all year
006Arsenic, potentially dissolvedDAILY MX report only all year
006Cadmium, potentially dissolvd30DA AVG report only all year
006Cadmium, potentially dissolvdDAILY MX report only all year
006Lead, potentially dissolvd30DA AVG report only all year
006Lead, potentially dissolvdDAILY MX report only all year
006Manganese, potentially dissolvd30DA AVG report only all year
006Manganese, potentially dissolvdDAILY MX report only all year
006Nickel, potentially dissolvd30DA AVG report only all year
006Nickel, potentially dissolvdDAILY MX report only all year
006Selenium, potentially dissolvd30DA AVG report only all year
006Selenium, potentially dissolvdDAILY MX report only all year
006Oil and greaseINST MAX <= 10 mg/L all year
006Chromium, trivalent total recoverableDAILY MX report only all year
006Chlorpyrifos30DA AVG report only all year
006ChlorpyrifosDAILY MX report only all year
006Aldicarb30DA AVG report only all year
006Flow, in conduit or thru treatment plant30DA AVG report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
006Sulfide-hydrogen sulfide [undissociated]30DA AVG <= .008 mg/L all year
006Mercury, total [as Hg]30DA AVG report only all year
006Coliform, fecal general30DA GM <= 400 #/100mL all year
006Coliform, fecal generalMX 7D GM <= 400 #/100mL all year
006Base neutrals & acid [Method 625], efflnt30DA AVG report only Mar, Dec
006Base neutrals & acid [Method 625], efflntDAILY MX report only Mar, Dec
006Boron, total30DA AVG report only all year
006Static Renewal 7 Day Chronic Ceriodaphnia dubiaSINGSAMP report only all year
006Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE report only all year
006Static Renewal 7 Day Chronic Ceriodaphnia dubiaMN VALUE >= 14 tox chronic all year
006Static Renewal 7 Day Chronic Pimephales promelasSINGSAMP report only all year
006Static Renewal 7 Day Chronic Pimephales promelasMN VALUE report only all year
006Static Renewal 7 Day Chronic Pimephales promelasMN VALUE >= 14 tox chronic all year
FLOFlow, in conduit or thru treatment plant30DA AVG <= 5.85 MGD all year
FLOFlow, in conduit or thru treatment plantDAILY 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