Clean Water Act discharge permit · NPDES SD0028611
SOUTH DAKOTA ELLSWORTH DEVELOPMENT AUTHORITY (SDEDA), Box Elder, SD: NPDES SD0028611 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 35Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
SOUTH DAKOTA ELLSWORTH DEVELOPMENT AUTHORITY (SDEDA), held by South Dakota Ellsworth Development Authority (SDEDA), holds NPDES permit SD0028611, which discharges to Box Elder Creek. EPA’s file records it issued March 28, 2014 and expiring March 31, 2019. 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 | SOUTH DAKOTA ELLSWORTH DEVELOPMENT AUTHORITY (SDEDA) |
|---|---|
| Permittee as filed | South Dakota Ellsworth Development Authority (SDEDA) |
| NPDES ID | SD0028611 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 28, 2014 |
| Expiration date | March 31, 2019 |
| Issuing agency | SDDANR |
| Address | Box Elder, SD 57719 |
| Receiving water | Box Elder Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | 101201110402-Boxelder Creek (HUC 101201110402) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 35Pollutants on file
- 35Under a numeric limit
- 9With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 24 | 4 | 4 | October 31, 2025 | 312% over the limit |
| E. coli, colony forming units [CFU] | 2 | 3 | 3 | May 31, 2025 | 105% over the limit |
| Toxicity [chronic], Ceriodaphnia dubia | 1 | 2 | 2 | October 31, 2025 | 99,999% over the limit |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 1 | 2 | 2 | October 31, 2015 | 99,999% over the limit |
| pH | 2 | 1 | 1 | October 31, 2025 | |
| BOD, 5-day, 20 deg. C | 3 | 2 | 0 | ||
| Conductivity | 1 | 1 | 0 | ||
| Nitrogen, nitrate total [as N] | 1 | 1 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 1 | 1 | 0 | ||
| Solids, total suspended | 3 | 0 | 0 | ||
| Temperature, water deg. centigrade | 2 | 0 | 0 | ||
| Flow rate | 2 | 0 | 0 | ||
| Cyanide, weak acid, dissociable | 2 | 0 | 0 | ||
| Cyanide, total [as CN] | 2 | 0 | 0 | ||
| Arsenic, total recoverable | 2 | 0 | 0 | ||
| Selenium, total recoverable | 2 | 0 | 0 | ||
| Thallium, total recoverable | 2 | 0 | 0 | ||
| Beryllium, total recoverable [as Be] | 2 | 0 | 0 | ||
| Nickel, total recoverable | 2 | 0 | 0 | ||
| Silver total recoverable | 2 | 0 | 0 | ||
| Zinc, total recoverable | 2 | 0 | 0 | ||
| Cadmium, total recoverable | 2 | 0 | 0 | ||
| Lead, total recoverable | 2 | 0 | 0 | ||
| Chromium, total recoverable | 2 | 0 | 0 | ||
| Copper, total recoverable | 2 | 0 | 0 | ||
| Molybdenum, total recoverable | 2 | 0 | 0 | ||
| Antimony, total recoverable | 2 | 0 | 0 | ||
| Phenols | 2 | 0 | 0 | ||
| Mercury, total [as Hg] | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| Oil and grease, hexane extr method | 1 | 0 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 1 | 0 | 0 | ||
| Oil and grease visual | 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 SD0028611.
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
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Start the watch
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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 SD0028611 there.
Nearby on the register
- Discharge permits in Box Elder
- Every permit record in Box Elder, A to Z
- Discharge permits in South Dakota
- Every permit record in South Dakota, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.