Clean Water Act discharge permit · NPDES COG591211

MT PRINCETON HOT SPRINGS RESORT WWTF, Nathrop (Historical), CO: NPDES COG591211 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
81Pollutants under a numeric limit
1Pollutants with an effluent exceedance

MT PRINCETON HOT SPRINGS RESORT WWTF, held by Princeton Holdings LLC, holds NPDES permit COG591211, which discharges to Chalk Creek. EPA’s file records it issued December 23, 2024 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	MT PRINCETON HOT SPRINGS RESORT WWTF
Permittee as filed	Princeton Holdings LLC
NPDES ID	COG591211
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	December 23, 2024
Expiration date	December 31, 2031
Address	Nathrop (Historical), CO 81236
Receiving water	Chalk Creek
Receiving water impaired	303(D) Listed
Subwatershed	Outlet Chalk Creek (HUC 110200010502)
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

81Pollutants on file
81Under 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; the 60 with the most exceedances of 81 are shown.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Zinc, potentially dissolved	4	1	1	February 28, 2026	1% over the limit
Nitrogen, ammonia total [as N]	42	0	0
BOD, 5-day, 20 deg. C	6	0	0
Temperature, water deg. centigrade	4	0	0
Solids, total suspended	4	0	0
Lead, potentially dissolvd	4	0	0
Flow, in conduit or thru treatment plant	4	0	0
E. coli	4	0	0
Cadmium, potentially dissolvd	3	0	0
Plant capacity fact. percent of capacity	2	0	0
pH	2	0	0
Nitrogen, inorganic total	2	0	0
Chloride [as Cl]	2	0	0
Chromium, hexavalent dissolved [as Cr]	2	0	0
Silver, potentially dissolved	2	0	0
Copper, potentially dissolved	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
Chlorine, total residual	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 COG591211.

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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Nearby on the register

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