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Clean Water Act discharge permit · NPDES CO0001163

MOLSON COORSGOLDEN FACILITY, Jefferson County, CO: NPDES CO0001163 discharge permit, effluent exceedances, inspections, penalties

MOLSON COORSGOLDEN FACILITY, held by MillerCoors USA LLC, holds NPDES permit CO0001163, which discharges to Clear Creek And Croke Canal. EPA’s file records it issued March 30, 2009 and expiring April 30, 2014. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedMOLSON COORSGOLDEN FACILITY
Permittee as filedMillerCoors USA LLC
NPDES IDCO0001163
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
IssuedMarch 30, 2009
Expiration dateApril 30, 2014
AddressJefferson County, CO 80401
Receiving waterCLEAR CREEK AND CROKE CANAL
SubwatershedTable Mountain-Clear Creek (HUC 101900040403)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended63022February 28, 2025182% over the limit
Oil and grease11717June 30, 2024246% over the limit
Copper, potentially dissolved0289February 28, 202677% over the limit
Iron, dissolved [as Fe]2229July 31, 202338% over the limit
Static Renewal 7 Day Chronic Ceriodaphnia dubia0108June 30, 202669% over the limit
Nitrite + Nitrate total [as N]485January 31, 201490% over the limit
Manganese, dissolved [as Mn]055October 31, 2021173% over the limit
pH484September 30, 2016
%Effect Static Renewal 7Day Chronic Pimephales promelas484June 30, 201447% over the limit
Oxygen, dissolved [DO]144September 30, 201710% over the limit
BOD, 5-day, 20 deg. C8172February 29, 202010% over the limit
Fluoride, total [as F]862November 30, 201624% over the limit
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia462December 31, 200487% over the limit
Iron, total recoverable2181December 31, 20183% over the limit
Nitrogen, inorganic total471May 31, 202222% over the limit
Nitrogen, ammonia total [as N]4831August 31, 202034% over the limit
Chloride [as Cl]231April 30, 20193% over the limit
E. coli, thermotol, MF, MTEC231December 31, 2016159% over the limit
Chlorine, total residual231January 31, 20181,000% over the limit
Solids, suspended percent removal131April 30, 202217% over the limit
E. coli031October 31, 2021516% over the limit
Chromium, hexavalent dissolved [as Cr]011June 30, 20229% over the limit
Selenium, potentially dissolvd011March 31, 202143% over the limit
Coliform, fecal general011December 31, 200818% over the limit
Chromium, total [as Cr]8580
Cyanide, weak acid, dissociable2550
Chromium, hexavalent tot recoverable2360
Flow, in conduit or thru treatment plant8120
Aluminum, total recoverable460
Sulfate [as S]260
Selenium, total recoverable260
Nickel, total recoverable260
Silver total recoverable260
Cadmium, total recoverable260
Lead, total recoverable260
Manganese, total recoverable260
Phosphorus, total [as P]440
Aluminum, total [as Al]440
Toxicity [chronic], Ceriodaphnia dubia440
Toxicity [chronic], Pimephales promelas [Fathead Minnow]440
Mercury, total [as Hg]130
Static Renewal 7 Day Chronic Pimephales promelas030
Copper, total recoverable220
BOD, 5-day, percent removal120
Sodium adsorption ratio020
Temperature, water deg. centigrade510
Production divided by days operated mo.310
Arsenic, total [as As]200
Zinc, total [as Zn]200
Oil and grease visual100

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

DateWhat EPA recordedAgency
March 25, 2026Management Practice Violations - Improper Operation and MaintenanceST6
March 25, 2026Reporting Violations - Improper/ Incorrect ReportingST6

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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How we handle your data → Privacy

EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID CO0001163 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.