NPDES CO0048437 · Clean Water Act

KREMMLING SANITATION DISTRICT WWTF, Kremmling, CO: NPDES CO0048437 discharge permit, effluent exceedances, inspections, penalties

KREMMLING SANITATION DISTRICT WWTF, Kremmling, Colorado: Individual permit CO0048437, held by Kremmling Sanitation District; Effective; issued November 29, 2010, term to December 31, 2015; discharges to Muddy Creek.

8 of the 12 pollutants listed for NPDES CO0048437 have no violation or effluent exceedance.

Nitrogen, ammonia total [as N]: 4 limits, 14 violations of any kind, 14 effluent exceedances, latest March 31, 2025, largest 113% over the limit.
pH: 2 limits, 11 violations of any kind, 2 effluent exceedances, latest July 31, 2026.
BOD, 5-day, 20 deg. C: 6 limits, 1 violation of any kind.
E. coli: 4 limits, 1 violation of any kind.
Flow, in conduit or thru treatment plant: 4 limits.
Solids, total dissolved: 4 limits.
Chlorine, total residual: 3 limits.
Temperature, water deg. centigrade: 2 limits.
Solids, total suspended: 2 limits.
Oil and grease: 1 limit.
BOD, 5-day, percent removal: 1 limit.
Oil and grease visual: 1 limit.

September 18, 2026: Letter of Violation/ Warning Letter (State).
February 19, 2025: Monitoring Violations - Invalid/Unrepresentative Sample (ST6).

Other permits held by Kremmling Sanitation District

KREMMLING WWTF, Kremmling: COE021000, issued 2015-08-27
KREMMLING SANITATION DISTRICT, Kremmling: COL048437, issued 2021-01-01

KREMMLING SANITATION DISTRICT WWTF among its neighbors

7 discharge permits are in the Lower Muddy Creek subwatershed (HUC 140100010709); CO0048437 is one. Its county: 104, 4 major; CO0048437 is minor permit.

Other permits in the Lower Muddy Creek subwatershed (HUC 140100010709)

KREMMLING MCELROY AIRFIELD, Kremmling: COR900204, minor, term to 2017-06-30
KREMMLING MCELROY AIRFIELD GRAND RIVER, Kremmling: COR901609, minor, term to 2025-12-31
KREMMLING SEWER NAUB EXTENSION, Kremmling: COG074305, minor, term to 2013-09-30
KREMMLING WWTF, Kremmling: COE021000, minor, term to 2020-08-26
MCELROY FIELD, Kremmling: COR431123, minor, term to 2029-03-31
UPRR KREMMLING CO YARD, Kremmling: COR901442, minor, term to 2022-12-31

Identity

Facility	KREMMLING SANITATION DISTRICT WWTF
Permittee	Kremmling Sanitation District
NPDES ID	CO0048437
Status	Effective
Type	Individual permit
Class	Minor
Facility type	Non-POTW
Issued	November 29, 2010
Expires	December 31, 2015
Address	Kremmling, CO 80459
Receiving water	Muddy Creek
Receiving water impaired	303(D) Listed
Subwatershed	Lower Muddy Creek (HUC 140100010709)

NPDES CO0048437: effluent limits and exceedances

KREMMLING SANITATION DISTRICT WWTF (NPDES CO0048437): 12 pollutants on file, 12 limited; 4 with a violation of any kind, 2 with an exceedance.

How exceedances are counted.

Pollutant	Limits	Violations	Exceedances	Latest	Largest, as filed
Nitrogen, ammonia total [as N]	4	14	14	March 31, 2025	113% over the limit
pH	2	11	2	July 31, 2026
BOD, 5-day, 20 deg. C	6	1	0
E. coli	4	1	0
Flow, in conduit or thru treatment plant	4	0	0
Solids, total dissolved	4	0	0
Chlorine, total residual	3	0	0
Temperature, water deg. centigrade	2	0	0
Solids, total suspended	2	0	0
Oil and grease	1	0	0
BOD, 5-day, percent removal	1	0	0
Oil and grease visual	1	0	0

NPDES CO0048437: inspections, violations and enforcement

NPDES CO0048437: 1 single-event violation

Date	What EPA recorded	Agency
February 19, 2025	Monitoring Violations - Invalid/Unrepresentative Sample	ST6

NPDES CO0048437: 1 informal enforcement action

Date	What EPA recorded	Agency
September 18, 2026	Letter of Violation/ Warning Letter	State

NPDES CO0048437 (KREMMLING SANITATION DISTRICT WWTF): no inspection and formal enforcement action on file.

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Permits near NPDES CO0048437

NPDES CO0048437: 12 pollutant rows, 2 dated events; ICIS-NPDES download, loaded September 15, 2026.