Clean Water Act discharge permit · NPDES COG641087
LITTLE MAC WTP, Grand County, CO: NPDES COG641087 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
LITTLE MAC WTP, held by Grand County WSD 1, holds NPDES permit COG641087, which discharges to Little Vasquez Creek. EPA’s file records it issued January 19, 2006 and expiring October 31, 2010. 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 | LITTLE MAC WTP |
|---|---|
| Permittee as filed | Grand County WSD 1 |
| NPDES ID | COG641087 |
| 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 | Not a publicly owned treatment works |
| Issued | January 19, 2006 |
| Expiration date | October 31, 2010 |
| Address | Grand County, CO 80482 |
| Receiving water | LITTLE VASQUEZ CREEK |
| Subwatershed | Vasquez Creek (HUC 140100010201) |
| SIC | 4941 – Water Supply |
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
- 8Pollutants on file
- 8Under a numeric limit
- 8With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| pH | 8 | 226 | 0 | ||
| Solids, total suspended | 8 | 226 | 0 | ||
| Flow, in conduit or thru treatment plant | 8 | 226 | 0 | ||
| Chlorine, total residual | 8 | 226 | 0 | ||
| Solids, total dissolved | 6 | 226 | 0 | ||
| BOD, 5-day, 20 deg. C | 4 | 216 | 0 | ||
| Oil and grease | 4 | 113 | 0 | ||
| Oil and grease visual | 4 | 113 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG641087.
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 COG641087.
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
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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 COG641087 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.