Clean Water Act discharge permit · NPDES MTG580007

PARK CITY - COUNTY WWTF, Park City, MT: NPDES MTG580007 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
4Pollutants under a numeric limit
4Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

PARK CITY - COUNTY WWTF, held by PARK CITY WATER AND SEWER DIST, holds NPDES permit MTG580007, which discharges to Keefer Drainage Ditch. EPA’s file records it issued June 8, 1993 and expiring May 31, 1998.

PARK CITY - COUNTY WWTF, Park City, Montana: Coverage under a general permit MTG580007, held by PARK CITY WATER AND SEWER DIST; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued June 8, 1993, term to May 31, 1998, by MONTANA DEQ; discharges to KEEFER DRAINAGE DITCH.

BOD, 5-day, 20 deg. C: 1 limit, 73 violations of any kind, 56 effluent exceedances, latest June 30, 2017, largest 363% over the limit.
pH: 0 limits, 10 violations of any kind, 5 effluent exceedances, latest June 30, 2016.
Solids, total suspended: 1 limit, 19 violations of any kind, 2 effluent exceedances, latest November 30, 1996, largest 340% over the limit.
Solids, suspended percent removal: 0 limits, 2 violations of any kind, 2 effluent exceedances, latest June 30, 2017, largest 25% over the limit.
Phosphorus, total [as P]: 0 limits, 19 violations of any kind, 0 effluent exceedances.
Nitrogen, total [as N]: 0 limits, 16 violations of any kind, 0 effluent exceedances.
Flow rate: 1 limit, 14 violations of any kind, 0 effluent exceedances.
Nitrite + Nitrate total [as N]: 0 limits, 14 violations of any kind, 0 effluent exceedances.
Nitrogen, Kjeldahl, total [as N]: 0 limits, 13 violations of any kind, 0 effluent exceedances.
Nitrogen, ammonia total [as N]: 0 limits, 12 violations of any kind, 0 effluent exceedances.
Chlorine, total residual: 0 limits, 8 violations of any kind, 0 effluent exceedances.
E. coli, MTEC-MF: 0 limits, 6 violations of any kind, 0 effluent exceedances.
Coliform, fecal general: 1 limit, 3 violations of any kind, 0 effluent exceedances.
Temperature, water deg. centigrade: 0 limits, 2 violations of any kind, 0 effluent exceedances.
Flow rate: 0 limits, 2 violations of any kind, 0 effluent exceedances.
Oil and grease, hexane extr method: 0 limits, 2 violations of any kind, 0 effluent exceedances.

Montana holds 53 Publicly owned treatment works coverages of this permit type in EPA’s file; 0 were issued before MTG580007.

Coverages issued nearest MTG580007

June 8, 1993: MT STATE HOSPITAL WWTP, Warm Springs, MTG580004, held by MONTANA STATE HOSPITAL
November 1, 1999: CITY OF TOWNSEND WWTF, Townsend, MTG580020, held by CITY OF TOWNSEND
November 1, 1999: EUREKA SEWAGE TREATMENT, Eureka, MTG580032, held by TOWN OF EUREKA
March 21, 2000: TOWN OF FROMBERG WWTP, Fromberg, MTG580033, held by TOWN OF FROMBERG
April 4, 2000: CITY OF THOMPSON FALLS WWTF, Thompson Falls, MTG580035, held by CITY OF THOMPSON FALLS
November 29, 2004: ST. LABRE INDIAN SCHOOL, Ashland, MTG589002, held by Catholic Diocese of Great Falls

PARK CITY - COUNTY WWTF among its neighbors

EPA’s permit file holds 3 discharge permits in the Yellowstone River-Bellion Creek subwatershed (HUC 100700040601), MTG580007 among them. Its county holds 41, 0 of them major permits; MTG580007 is a minor permit.

Other permits in the Yellowstone River-Bellion Creek subwatershed (HUC 100700040601)

BULLSEYE FEEDLOT - PARK CITY UNIT, Park City: MTG010135, minor permit, discharging to ITALIAN DITCH, permit term to October 31, 2023
PARK CITY COUNTY WASTEWATER TREATMENT FACILITY, Park City Division: MTG581007, minor permit, discharging to VANDENBERG DRAIN DITCH, permit term to December 31, 2022

Identity

Facility as filed	PARK CITY - COUNTY WWTF
Permittee as filed	PARK CITY WATER AND SEWER DIST
NPDES ID	MTG580007
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	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	June 8, 1993
Expiration date	May 31, 1998
Issuing agency	MONTANA DEQ
Address	Park City, MT 59063
Receiving water	KEEFER DRAINAGE DITCH
Subwatershed	Yellowstone River-Bellion Creek (HUC 100700040601)

Effluent limits and exceedances

16Pollutants on file
4Under a numeric limit
16With a violation of any kind
4With 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
BOD, 5-day, 20 deg. C	1	73	56	June 30, 2017	363% over the limit
pH	0	10	5	June 30, 2016
Solids, total suspended	1	19	2	November 30, 1996	340% over the limit
Solids, suspended percent removal	0	2	2	June 30, 2017	25% over the limit
Phosphorus, total [as P]	0	19	0
Nitrogen, total [as N]	0	16	0
Flow rate	1	14	0
Nitrite + Nitrate total [as N]	0	14	0
Nitrogen, Kjeldahl, total [as N]	0	13	0
Nitrogen, ammonia total [as N]	0	12	0
Chlorine, total residual	0	8	0
E. coli, MTEC-MF	0	6	0
Coliform, fecal general	1	3	0
Temperature, water deg. centigrade	0	2	0
Flow rate	0	2	0
Oil and grease, hexane extr method	0	2	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTG580007.

Inspections

EPA’s inspection file holds no inspection for NPDES MTG580007.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES MTG580007.

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

This public-records page covers the Clean Water Act discharge permit NPDES MTG580007 for PARK CITY - COUNTY WWTF in Park City, MT, held by PARK CITY WATER AND SEWER DIST, which discharges to Keefer Drainage Ditch. The page lists 4 pollutants under a numeric limit and 4 pollutants with an effluent exceedance, out of 16 pollutants in the effluent limits and exceedances section.