Clean Water Act discharge permit · NPDES COG591141

ANNUNCIATION HEIGHT CONFERENCE AND RETREAT CENTER, Estes Park, CO: NPDES COG591141 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
79Pollutants under a numeric limit
5Pollutants with an effluent exceedance

ANNUNCIATION HEIGHT CONFERENCE AND RETREAT CENTER, held by Annunciation Heights, holds NPDES permit COG591141, which discharges to Tahosa Creek. EPA’s file records it issued January 29, 2025 and expiring December 31, 2031. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	ANNUNCIATION HEIGHT CONFERENCE AND RETREAT CENTER
Permittee as filed	Annunciation Heights
NPDES ID	COG591141
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	January 29, 2025
Expiration date	December 31, 2031
Address	Estes Park, CO 80517
Receiving water	Tahosa Creek
Subwatershed	Cabin Creek (HUC 101900050203)
SIC	4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

79Pollutants on file
79Under a numeric limit
5With a violation of any kind
5With 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 79 are shown.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Nitrogen, ammonia total [as N]	36	19	19	July 31, 2026	289% over the limit
E. coli	3	15	15	July 31, 2026	4,675% over the limit
BOD, 5-day, 20 deg. C	6	7	7	May 31, 2025	180% over the limit
Nitrogen, inorganic total	3	4	4	August 31, 2025	200% over the limit
Solids, total suspended	4	1	1	April 30, 2025	30% over the limit
Flow, in conduit or thru treatment plant	4	0	0
Chlorine, total residual	3	0	0
Plant capacity fact. percent of capacity	2	0	0
pH	2	0	0
Chloride [as Cl]	2	0	0
Arsenic, total recoverable	2	0	0
Chromium, hexavalent dissolved [as Cr]	2	0	0
Zinc, potentially dissolved	2	0	0
Silver, potentially dissolved	2	0	0
Copper, potentially dissolved	2	0	0
Cadmium, potentially dissolvd	2	0	0
Lead, potentially dissolvd	2	0	0
Manganese, potentially dissolvd	2	0	0
Nickel, potentially dissolvd	2	0	0
Selenium, potentially dissolvd	2	0	0
Uranium, potentially dissolvd	2	0	0
Sulfide-hydrogen sulfide [undissociated]	2	0	0
Perfluorooctanoic acid (PFOA)	2	0	0
Perfluorobutanoic acid (PFBA)	2	0	0
Perfluorooctanesulfonamide (PFOSA)	2	0	0
Perfluoropentanoic acid (PFPeA)	2	0	0
Perfluorohexanoic acid (PFHxA)	2	0	0
Perfluoroheptanoic acid (PFHpA)	2	0	0
Perfluorononanoic acid (PFNA)	2	0	0
Perfluorodecanoic acid (PFDA)	2	0	0
Perfluoroundecanoic acid (PFUnA)	2	0	0
Perfluorododecanoic acid (PFDoA)	2	0	0
Perfluorotridecanoic acid (PFTrDA)	2	0	0
Perfluorotetradecanoic acid (PFTeDA)	2	0	0
N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)	2	0	0
N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)	2	0	0
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)	2	0	0
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)	2	0	0
Perfluorobutanesulfonic acid (PFBS)	2	0	0
Perfluorodecanesulfonic acid (PFDS)	2	0	0
Perfluoroheptanesulfonic acid (PFHpS)	2	0	0
Perfluorohexanesulfonic acid (PFHxS)	2	0	0
Perfluorooctanesulfonic acid (PFOS)	2	0	0
1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)	2	0	0
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)	2	0	0
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)	2	0	0
Perfluoropentanesulfonic acid (PFPeS)	2	0	0
Perfluorononanesulfonic acid (PFNS)	2	0	0
Hexafluoropropylene oxide dimer acid (HFPO-DA)	2	0	0
Perfluoro-2-methoxypropanoic acid	2	0	0
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)	2	0	0
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)	2	0	0
Perfluorododecanesulfonic acid (PFDoS)	2	0	0
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)	2	0	0
Potassium 9-chlorohexadecafluoro-3-oxanonane-1-sulfonate	2	0	0
Potassium 11-chloroeicosafluoro-3-oxaundecane-1-sulfonate	2	0	0
N-methyl perfluorooctanesulfonamide (NMeFOSA)	2	0	0
N-ethyl perfluorooctanesulfonamide (NEtFOSA)	2	0	0
PFAS Sum	2	0	0
3-Perfluoropropyl propanoic acid (3:3 FTCA)	2	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 COG591141.

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

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, COG591141.

Start the watch

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 COG591141 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers NPDES permit COG591141, held by Annunciation Heights for the Annunciation Height Conference and Retreat Center in Estes Park, CO, which discharges to Tahosa Creek in the Cabin Creek subwatershed (HUC 101900050203). The permit is listed as Effective, issued January 29, 2025 and expiring December 31, 2031, with 79 pollutants on file, 79 of them under a numeric limit, and 5 showing an effluent exceedance.