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Clean Water Act discharge permit · NPDES CO0020281

DEL NORTE WWTF, Del Norte, CO: NPDES CO0020281 discharge permit, effluent exceedances, inspections, penalties

DEL NORTE WWTF, held by Del Norte Town of, holds NPDES permit CO0020281, which discharges to Rio Grande River. EPA’s file records it issued April 16, 2014 and expiring May 31, 2019. 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 filedDEL NORTE WWTF
Permittee as filedDel Norte Town of
NPDES IDCO0020281
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedApril 16, 2014
Expiration dateMay 31, 2019
AddressDel Norte, CO 81132
Receiving waterRIO GRANDE RIVER
SubwatershedCity of Monte Vista-Rio Grande (HUC 130100020705)

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
BOD, 5-day, 20 deg. C8240182March 31, 2026363% over the limit
Copper, potentially dissolved35642July 31, 20265,432% over the limit
Nitrogen, ammonia total [as N]144638December 31, 2025795% over the limit
BOD, 5-day, percent removal03434April 30, 2026173% over the limit
pH24327May 31, 2025
Cadmium, potentially dissolvd33721August 31, 20251,003% over the limit
Solids, total suspended44913September 30, 2025163% over the limit
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia01413June 30, 202699,999% over the limit
Zinc, potentially dissolved32111June 30, 2026526% over the limit
LC50 Static Renewal 96Hr Acute Pimephales promelas098December 31, 202552% over the limit
Coliform, fecal general0164January 31, 200899,999% over the limit
E. coli3162May 31, 201699,999% over the limit
Flow, in conduit or thru treatment plant4360
Lead, potentially dissolvd0280
Oil and grease1130
Chlorine, total residual2120
Oil and grease visual190
Plant capacity fact. percent of capacity280
Arsenic, total recoverable070
Herbicides, total040
Uranium, potentially dissolvd040
Radium 226 + radium 228, total040
Strontium 90, total040
Uranium, total040
Cesium-134040
Chlorpyrifos040
Thorium-230 + Thorium-232040
Pesticides, general040
Chlorinated pesticides, total040
Organic pesticide chemicals [40 CFR455]040
Total pesticides040
Phosphated pesticides020
Endosulfan, total020
2,4-Dichlorophenoxyacetic acid020
Prometon020
Glyphosate, total020
Metribuzin020

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
April 1, 2026Monitoring Violations - Failure to Monitor for Toxicity RequirementsST6
October 1, 2025Monitoring Violations - Failure to Monitor for Toxicity RequirementsST6
May 29, 2025Reporting Violations - Improper/ Incorrect ReportingST6
May 29, 2025Monitoring Violations - Analysis not ConductedST6
May 29, 2025Management Practice Violations - Improper Operation and MaintenanceST6
April 1, 2025Monitoring Violations - Failure to Monitor for Toxicity RequirementsST6
January 1, 2023Monitoring Violations - Failure to Monitor for Toxicity RequirementsST6
October 1, 2022Monitoring Violations - Failure to Monitor for Toxicity RequirementsST6
January 1, 2021Effluent Violations - Failed Toxicity TestST6
January 1, 2021Monitoring Violations - Failure to Monitor for Toxicity RequirementsST6
October 1, 2020Reporting Violations - Failure to NotifyST6
August 26, 2020Reporting Violations - Improper/ Incorrect ReportingST6
August 26, 2020Monitoring Violations - Failure to Monitor for Toxicity RequirementsST6
August 26, 2020Management Practice Violations - Improper Operation and MaintenanceST6
August 26, 2020Monitoring Violations - Improper Analysis or Lab ErrorST6
August 26, 2020Monitoring Violations - Invalid/Unrepresentative SampleST6

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.

Watch this permit

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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 CO0020281 there.

Nearby on the register

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