Clean Water Act discharge permit · NPDES COR431219

BIG LAKE, Ward, CO: NPDES COR431219 discharge permit, effluent exceedances, inspections, penalties

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

BIG LAKE, held by Big Lake LLC, holds NPDES permit COR431219. EPA’s file records it issued July 14, 2026 and expiring March 31, 2029. 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.

What the register holds for BIG LAKE: its NPDES ID, its permit type and status, its dates, its address in Ward, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR431219.

Identity

Facility as filed	BIG LAKE
Permittee as filed	Big Lake LLC
NPDES ID	COR431219
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	July 14, 2026
Expiration date	March 31, 2029
Address	Ward, CO 80481
Subwatershed	Headwaters South Saint Vrain Creek (HUC 101900050101)

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

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES COR431219.

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 COR431219.

Inspections

EPA’s inspection file holds no inspection for NPDES COR431219.

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 COR431219.

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, COR431219.

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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 COR431219 there.

Nearby on the register

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

BIG LAKE, a general permit coverage in Ward, Colorado, is one of 251 general permit coverages on EPA's NPDES register in Boulder County, and its issue date is earlier than 97.2% of the 249 coverages in the county, this one included. The permit sits within the Headwaters South Saint Vrain Creek subwatershed, where 4 NPDES permits, this one included, are listed. BIG LAKE records zero pollutants under a numeric limit and zero pollutants with an effluent exceedance, a contrast with the 25.5% of the county's 251 general permit coverages that carry a violation on file.