Clean Water Act discharge permit · NPDES SDG920133
TYNDALL, CITY OF, Tyndall, SD: NPDES SDG920133 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
TYNDALL, CITY OF, held by Tyndall, City of, holds NPDES permit SDG920133, which discharges to Silver Creek. EPA’s file records it issued March 1, 2017 and expiring December 31, 2020. 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 | TYNDALL, CITY OF |
|---|---|
| Permittee as filed | Tyndall, City of |
| NPDES ID | SDG920133 |
| 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 | March 1, 2017 |
| Expiration date | December 31, 2020 |
| Issuing agency | SDDENR |
| Address | Tyndall, SD 57066 |
| Receiving water | Silver Creek |
| Subwatershed | Upper Lewis and Clark Lake (HUC 101701010906) |
| 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
- 10Pollutants on file
- 8Under a numeric limit
- 10With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| pH | 2 | 6 | 2 | April 30, 2019 | |
| Nitrogen, ammonia total [as N] | 2 | 6 | 0 | ||
| Temperature, water deg. centigrade | 2 | 2 | 0 | ||
| Flow rate | 2 | 2 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 2 | 0 | ||
| Solids, total suspended | 2 | 2 | 0 | ||
| Nitrogen, total [as N] | 0 | 2 | 0 | ||
| Phosphorus, total [as P] | 0 | 2 | 0 | ||
| Flow, total | 1 | 1 | 0 | ||
| Duration of discharge | 1 | 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 SDG920133.
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 SDG920133 there.
Nearby on the register
- Discharge permits in Tyndall
- Every permit record in Tyndall, 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 October 14, 2026.