Clean Water Act discharge permit · NPDES COG641158
BIG ELK MEADOWS WTP, Lyons, CO: NPDES COG641158 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
BIG ELK MEADOWS WTP, held by Big Elk Meadows Water Association, holds NPDES permit COG641158, which discharges to Mirror Lake. EPA’s file records it issued June 6, 2013 and expiring September 30, 2015. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | BIG ELK MEADOWS WTP |
|---|---|
| Permittee as filed | Big Elk Meadows Water Association |
| NPDES ID | COG641158 |
| 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 | June 6, 2013 |
| Expiration date | September 30, 2015 |
| Address | Lyons, CO 80540 |
| Receiving water | Mirror Lake |
| Subwatershed | West Fork Little Thompson River (HUC 101900060401) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 6Pollutants on file
- 6Under a numeric limit
- 6With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 2 | 43 | 5 | September 30, 2025 | 247% over the limit |
| pH | 2 | 40 | 2 | March 31, 2026 | |
| Flow, in conduit or thru treatment plant | 2 | 38 | 0 | ||
| Chlorine, total residual | 2 | 38 | 0 | ||
| Oil and grease | 1 | 19 | 0 | ||
| Oil and grease visual | 1 | 19 | 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 COG641158.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 COG641158 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.