Clean Water Act discharge permit · NPDES SD0022179
GREGORY, CITY OF, Gregory, SD: NPDES SD0022179 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
GREGORY, CITY OF, held by Gregory, City of, holds NPDES permit SD0022179, which discharges to Unnamed Trib. Of Ponca Creek. EPA’s file records it issued March 14, 2014 and expiring March 31, 2019. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | GREGORY, CITY OF |
|---|---|
| Permittee as filed | Gregory, City of |
| NPDES ID | SD0022179 |
| 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 | March 14, 2014 |
| Expiration date | March 31, 2019 |
| Issuing agency | SDDENR |
| Address | Gregory, SD 57533 |
| Receiving water | Unnamed Trib. of Ponca Creek |
| Subwatershed | Lake Dolton-Ponca Creek (HUC 101500010104) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 18Pollutants on file
- 10Under a numeric limit
- 18With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 4 | 87 | 10 | March 31, 2022 | 823% over the limit |
| pH | 2 | 85 | 8 | November 30, 2018 | |
| Solids, total suspended | 2 | 81 | 7 | October 31, 2014 | 30% over the limit |
| Coliform, fecal general | 0 | 49 | 1 | June 30, 2001 | 15% over the limit |
| Temperature, water deg. centigrade | 2 | 76 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 76 | 0 | ||
| Flow rate | 2 | 74 | 0 | ||
| Duration | 0 | 21 | 0 | ||
| Chlorine, total residual | 0 | 21 | 0 | ||
| Flow, total | 1 | 16 | 0 | ||
| Duration of discharge | 1 | 15 | 0 | ||
| Nitrogen, total [as N] | 0 | 6 | 0 | ||
| Phosphorus, total [as P] | 0 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 4 | 0 | ||
| E. coli, colony forming units [CFU] | 2 | 3 | 0 | ||
| Stream flow, estimated | 1 | 3 | 0 | ||
| Oil & Grease | 0 | 3 | 0 | ||
| Oil and grease visual | 0 | 2 | 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 SD0022179.
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, SD0022179.
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 SD0022179 there.
Nearby on the register
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- Every permit record in Gregory, 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 14, 2026.