Clean Water Act discharge permit · NPDES SDG922799
ONIDA, CITY OF, Onida, SD: NPDES SDG922799 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
ONIDA, CITY OF, held by Onida, City of, holds NPDES permit SDG922799, which discharges to Unnamed Wetland. EPA’s file records it issued December 1, 2019 and expiring December 31, 2020. 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 | ONIDA, CITY OF |
|---|---|
| Permittee as filed | Onida, City of |
| NPDES ID | SDG922799 |
| 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 | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 1, 2019 |
| Expiration date | December 31, 2020 |
| Issuing agency | SDDENR |
| Address | Onida, SD 57564 |
| Receiving water | Unnamed Wetland |
| Subwatershed | Town of Onida (HUC 101301051901) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 10Pollutants on file
- 8Under a numeric limit
- 7With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 2 | 7 | 4 | November 30, 2021 | 35% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 1 | 1 | March 31, 2020 | 23% over the limit |
| Temperature, water deg. centigrade | 2 | 4 | 0 | ||
| Nitrogen, total [as N] | 0 | 3 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 2 | 0 | ||
| Phosphorus, total [as P] | 0 | 2 | 0 | ||
| Duration of discharge | 1 | 1 | 0 | ||
| Flow rate | 2 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Flow, total | 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 SDG922799.
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 SDG922799 there.
Nearby on the register
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- Every permit record in Onida, 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.