Clean Water Act discharge permit · NPDES CO0000002
SWG ARAPAHOE FACILITY, Denver, CO: NPDES CO0000002 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 30Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
SWG ARAPAHOE FACILITY, held by SWG Arapahoe LLC, holds NPDES permit CO0000002, which discharges to South Platte River. EPA’s file records it issued March 29, 2013 and expiring April 30, 2018. 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 | SWG ARAPAHOE FACILITY |
|---|---|
| Permittee as filed | SWG Arapahoe LLC |
| NPDES ID | CO0000002 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 29, 2013 |
| Expiration date | April 30, 2018 |
| Address | Denver, CO 80202 |
| Receiving water | South Platte River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | 101900020904 (HUC 101900020904) |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | RCRA handler COD980285951; ICIS-AIR source CO0000000803100008 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 30Pollutants on file
- 30Under a numeric limit
- 10With 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 |
|---|---|---|---|---|---|
| Sulfate | 2 | 17 | 17 | July 31, 2026 | 21% over the limit |
| Temperature, water deg. centigrade | 8 | 22 | 2 | January 31, 2017 | 114% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 2 | 2 | July 31, 2026 | 19% over the limit |
| Chlorine, total residual | 3 | 1 | 1 | March 31, 2014 | 29% over the limit |
| Selenium, potentially dissolvd | 5 | 4 | 0 | ||
| Zinc, potentially dissolved | 4 | 4 | 0 | ||
| Iron, dissolved [as Fe] | 2 | 1 | 0 | ||
| Mercury, total [as Hg] | 2 | 1 | 0 | ||
| LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | 1 | 1 | 0 | ||
| LC50 Static Renewal 96Hr Acute Pimephales promelas | 1 | 1 | 0 | ||
| Nitrogen, ammonia total [as N] | 36 | 0 | 0 | ||
| Manganese, dissolved [as Mn] | 3 | 0 | 0 | ||
| Silver, potentially dissolved | 3 | 0 | 0 | ||
| Copper, potentially dissolved | 3 | 0 | 0 | ||
| Cadmium, potentially dissolvd | 3 | 0 | 0 | ||
| Lead, potentially dissolvd | 3 | 0 | 0 | ||
| Nickel, potentially dissolvd | 3 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Solids, total suspended | 2 | 0 | 0 | ||
| Cyanide, weak acid, dissociable | 2 | 0 | 0 | ||
| Chloride [as Cl] | 2 | 0 | 0 | ||
| Iron, total recoverable | 2 | 0 | 0 | ||
| Zinc, total [as Zn] | 2 | 0 | 0 | ||
| Chromium, total recoverable | 2 | 0 | 0 | ||
| Oil and grease | 2 | 0 | 0 | ||
| Chromium, trivalent total recoverable | 2 | 0 | 0 | ||
| Oil and grease visual | 2 | 0 | 0 | ||
| Arsenic, total recoverable | 1 | 0 | 0 | ||
| Arsenic, potentially dissolved | 1 | 0 | 0 | ||
| Priority pollutants scan [yes/no] | 1 | 0 | 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 CO0000002.
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
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, CO0000002.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 CO0000002 there.
Nearby on the register
- Discharge permits in Denver
- Every permit record in Denver, A to Z
- Discharge permits in Colorado
- Every permit record in Colorado, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.