Clean Water Act discharge permit · NPDES SD0020737
OACOMA, TOWN OF, Oacoma, SD: NPDES SD0020737 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
OACOMA, TOWN OF, held by Town of Oacoma, holds NPDES permit SD0020737, which discharges to Lake Francis Case - Missouri River. EPA’s file records it issued December 28, 2017 and expiring December 31, 2022. 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 | OACOMA, TOWN OF |
|---|---|
| Permittee as filed | Town of Oacoma |
| NPDES ID | SD0020737 |
| 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 | December 28, 2017 |
| Expiration date | December 31, 2022 |
| Issuing agency | SDDANR |
| Address | Oacoma, SD 57365 |
| Receiving water | Lake Francis Case - Missouri River |
| Subwatershed | Pontoon Creek-Missouri River (HUC 101401011102) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 17Pollutants on file
- 10Under a numeric limit
- 17With a violation of any kind
- 6With 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 | 2 | 158 | 13 | August 31, 2024 | 60% over the limit |
| pH | 2 | 156 | 9 | September 30, 2019 | |
| Coliform, total general | 2 | 157 | 7 | August 31, 2024 | 99,999% over the limit |
| Solids, total suspended | 2 | 152 | 4 | May 31, 2018 | 184% over the limit |
| E. coli, colony forming units [CFU] | 2 | 38 | 3 | August 31, 2024 | 930% over the limit |
| Coliform, fecal general | 0 | 76 | 2 | May 31, 2009 | 325% over the limit |
| Temperature, water deg. centigrade | 2 | 146 | 0 | ||
| Flow rate | 2 | 146 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 146 | 0 | ||
| Chlorine, total residual | 0 | 52 | 0 | ||
| Oil and grease | 0 | 26 | 0 | ||
| Flow | 0 | 26 | 0 | ||
| Oil and grease visual | 0 | 26 | 0 | ||
| Flow, total | 1 | 21 | 0 | ||
| Duration of discharge | 1 | 21 | 0 | ||
| Nitrogen, total [as N] | 0 | 1 | 0 | ||
| Phosphorus, total [as P] | 0 | 1 | 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 SD0020737.
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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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 SD0020737 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.