Clean Water Act discharge permit · NPDES SDG860002
MNI WICONI RWS (WTP), Fort Pierre, SD: NPDES SDG860002 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
MNI WICONI RWS (WTP), held by MNI WICONI RWS, holds NPDES permit SDG860002, which discharges to Lake Sharpe (Missouri River). EPA’s file records it issued October 1, 2016 and expiring September 30, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MNI WICONI RWS (WTP) |
|---|---|
| Permittee as filed | MNI WICONI RWS |
| NPDES ID | SDG860002 |
| 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 | October 1, 2016 |
| Expiration date | September 30, 2021 |
| Issuing agency | SDDANR |
| Address | Fort Pierre, SD 57532 |
| Receiving water | Lake Sharpe (Missouri River) |
| Subwatershed | Snake Butte-Missouri River (HUC 101401010301) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 4Pollutants on file
- 0Under a numeric limit
- 4With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 0 | 11 | 11 | September 30, 2013 | 900% over the limit |
| Solids, total suspended | 0 | 1 | 1 | June 30, 2015 | 202% over the limit |
| Nitrogen, ammonia total [as N] | 0 | 1 | 1 | May 31, 2015 | 101% over the limit |
| Solids, total dissolved | 0 | 1 | 1 | July 31, 2013 | 3% over the limit |
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 SDG860002.
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, SDG860002.
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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 SDG860002 there.
Nearby on the register
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- Every permit record in Fort Pierre, A to Z
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- Every permit record in South Dakota, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.