Clean Water Act discharge permit · NPDES SD0027391
ONAKA, TOWN OF, Onaka, Town Of, SD: NPDES SD0027391 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
ONAKA, TOWN OF, held by Onaka, Town of, holds NPDES permit SD0027391, which discharges to Unnamed Wetland. EPA’s file records it issued February 15, 2008 and expiring March 31, 2013. 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 | ONAKA, TOWN OF |
|---|---|
| Permittee as filed | Onaka, Town of |
| NPDES ID | SD0027391 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | February 15, 2008 |
| Expiration date | March 31, 2013 |
| Issuing agency | SDDENR |
| Address | Onaka, Town Of, SD 57466 |
| Receiving water | Unnamed Wetland |
| Subwatershed | Town of Onaka (HUC 101600070303) |
| 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
- 9Pollutants on file
- 7Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| Temperature, water deg. centigrade | 2 | 90 | 0 | ||
| Flow rate | 2 | 90 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 90 | 0 | ||
| pH | 2 | 90 | 0 | ||
| Solids, total suspended | 2 | 90 | 0 | ||
| Duration | 0 | 24 | 0 | ||
| Flow, total | 0 | 24 | 0 | ||
| Flow, total | 1 | 21 | 0 | ||
| Duration of discharge | 1 | 21 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES SD0027391.
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 SD0027391.
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, SD0027391.
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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 SD0027391 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.