Clean Water Act discharge permit · NPDES COG591030

HILLROSE WWTF, Hillrose, CO: NPDES COG591030 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
93Pollutants under a numeric limit
0Pollutants with an effluent exceedance

HILLROSE WWTF, held by Hillrose Town of, holds NPDES permit COG591030, which discharges to Unnamed Tributary To South Platte River. EPA’s file records it issued October 9, 2024 and expiring December 31, 2029. 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	HILLROSE WWTF
Permittee as filed	Hillrose Town of
NPDES ID	COG591030
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	October 9, 2024
Expiration date	December 31, 2029
Address	Hillrose, CO 80733
Receiving water	Unnamed Tributary to South Platte River
Subwatershed	Town of Hillrose-South Platte River (HUC 101900120605)

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

Effluent limits and exceedances

93Pollutants on file
93Under a numeric limit
1With a violation of any kind
0With 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; the 60 with the most exceedances of 93 are shown.

Pollutant or measure	Limits	Violations, any kind
Plant capacity fact. percent of capacity	2	1
Nitrogen, ammonia total [as N]	24	0
BOD, 5-day, 20 deg. C	6	0
Solids, total suspended	4	0
Flow, in conduit or thru treatment plant	4	0
Chlorine, total residual	4	0
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia	3	0
TU Static Renewal 7-Day Chronic Pimphales promelas	3	0
pH	2	0
Arsenic, total recoverable	2	0
Chromium, hexavalent dissolved [as Cr]	2	0
Zinc, potentially dissolved	2	0
Silver, potentially dissolved	2	0
Copper, potentially dissolved	2	0
Cadmium, potentially dissolvd	2	0
Lead, potentially dissolvd	2	0
Nickel, potentially dissolvd	2	0
Selenium, potentially dissolvd	2	0
E. coli	2	0
Perfluorooctanoic acid (PFOA)	2	0
Perfluorobutanoic acid (PFBA)	2	0
Perfluorooctanesulfonamide (PFOSA)	2	0
Perfluoropentanoic acid (PFPeA)	2	0
Perfluorohexanoic acid (PFHxA)	2	0
Perfluoroheptanoic acid (PFHpA)	2	0
Perfluorononanoic acid (PFNA)	2	0
Perfluorodecanoic acid (PFDA)	2	0
Perfluoroundecanoic acid (PFUnA)	2	0
Perfluorododecanoic acid (PFDoA)	2	0
Perfluorotridecanoic acid (PFTrDA)	2	0
Perfluorotetradecanoic acid (PFTeDA)	2	0
N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)	2	0
N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)	2	0
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)	2	0
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)	2	0
Perfluorobutanesulfonic acid (PFBS)	2	0
Perfluorodecanesulfonic acid (PFDS)	2	0
Perfluoroheptanesulfonic acid (PFHpS)	2	0
Perfluorohexanesulfonic acid (PFHxS)	2	0
Perfluorooctanesulfonic acid (PFOS)	2	0
1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)	2	0
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)	2	0
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)	2	0
Perfluoropentanesulfonic acid (PFPeS)	2	0
Perfluorononanesulfonic acid (PFNS)	2	0
Hexafluoropropylene oxide dimer acid (HFPO-DA)	2	0
Perfluoro-2-methoxypropanoic acid	2	0
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)	2	0
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)	2	0
Perfluorododecanesulfonic acid (PFDoS)	2	0
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)	2	0
Potassium 9-chlorohexadecafluoro-3-oxanonane-1-sulfonate	2	0
Potassium 11-chloroeicosafluoro-3-oxaundecane-1-sulfonate	2	0
N-methyl perfluorooctanesulfonamide (NMeFOSA)	2	0
N-ethyl perfluorooctanesulfonamide (NEtFOSA)	2	0
PFAS Sum	2	0
3-Perfluoropropyl propanoic acid (3:3 FTCA)	2	0
3-Perfluoroheptyl propanoic acid (7:3 FTCA)	2	0
Perfluoro-4-methoxybutanoic acid (PFMBA)	2	0
2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)	2	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG591030.

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 COG591030.

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 COG591030 there.

Nearby on the register

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