Clean Water Act discharge permit · NPDES SDG589525
PORCUPINE COMMUNITY LAGOON, Porcupine, SD: NPDES SDG589525 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
PORCUPINE COMMUNITY LAGOON, held by Oglala Sioux Tribe Water and Sewer, holds NPDES permit SDG589525. EPA’s file records it issued March 12, 2018 and expiring December 31, 2020. 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 | PORCUPINE COMMUNITY LAGOON |
|---|---|
| Permittee as filed | Oglala Sioux Tribe Water and Sewer |
| NPDES ID | SDG589525 |
| 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 |
| Program | Publicly owned treatment works |
| Issued | March 12, 2018 |
| Expiration date | December 31, 2020 |
| Issuing agency | U.S. EPA Region 8 |
| Address | Porcupine, SD 57772 |
| Subwatershed | Porcupine Butte-Porcupine Creek (HUC 101402011702) |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
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
- 7Pollutants on file
- 0Under a numeric limit
- 7With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 0 | 34 | 0 | ||
| pH | 0 | 34 | 0 | ||
| Solids, total suspended | 0 | 34 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 34 | 0 | ||
| Oil & Grease | 0 | 17 | 0 | ||
| Duration of discharge | 0 | 17 | 0 | ||
| Oil and grease visual | 0 | 17 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES SDG589525.
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 SDG589525.
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.
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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 SDG589525 there.
Nearby on the register
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- Every permit record in South Dakota, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.