Clean Water Act discharge permit · NPDES COG589164

PLATTEVILLE WWTF, Platteville, CO: NPDES COG589164 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
14Pollutants under a numeric limit
1Pollutants with an effluent exceedance

PLATTEVILLE WWTF, held by Platteville Town of, holds NPDES permit COG589164, which discharges to South Platte River. EPA’s file records it issued August 27, 2021 and expiring September 30, 2023. 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 filed	PLATTEVILLE WWTF
Permittee as filed	Platteville Town of
NPDES ID	COG589164
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	August 27, 2021
Expiration date	September 30, 2023
Address	Platteville, CO 80651
Receiving water	South Platte River
Subwatershed	Town of Platteville-South Platte River (HUC 101900030603)

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

Effluent limits and exceedances

14Pollutants on file
14Under a numeric limit
1With a violation of any kind
1With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Nitrogen, ammonia total [as N]	24	3	3	March 31, 2025	36% over the limit
BOD, 5-day, 20 deg. C	6	0	0
Solids, total suspended	4	0	0
Flow, in conduit or thru treatment plant	4	0	0
Plant capacity fact. percent of capacity	2	0	0
pH	2	0	0
Nitrogen, nitrate total [as N]	2	0	0
Chlorine, total residual	2	0	0
E. coli	2	0	0
Arsenic, total recoverable	1	0	0
Oil and grease	1	0	0
BOD, 5-day, percent removal	1	0	0
Solids, suspended percent removal	1	0	0
Oil and grease visual	1	0	0

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES COG589164.

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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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 COG589164 there.

Nearby on the register

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

This public-records page covers the NPDES discharge permit COG589164 for the PLATTEVILLE WWTF in Platteville, CO, held by Platteville Town of and discharging to the South Platte River, with the permit shown as administratively continued and classed as a minor discharger. The page lists 14 pollutants on file, 14 of them under a numeric limit, and 1 pollutant with an effluent exceedance.