Clean Water Act discharge permit · NPDES SD0020338
CHESTER SANITARY DISTRICT, Chester, SD: NPDES SD0020338 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
CHESTER SANITARY DISTRICT, held by Chester Sanitary District, holds NPDES permit SD0020338, which discharges to Skunk Creek. EPA’s file records it issued January 1, 2017 and expiring December 31, 2021. 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 | CHESTER SANITARY DISTRICT |
|---|---|
| Permittee as filed | Chester Sanitary District |
| NPDES ID | SD0020338 |
| 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 | January 1, 2017 |
| Expiration date | December 31, 2021 |
| Issuing agency | SDDENR |
| Address | Chester, SD 57016 |
| Receiving water | Skunk Creek |
| Receiving water impaired | 303(D) Listed |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 13Pollutants on file
- 10Under a numeric limit
- 11With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 2 | 108 | 14 | November 30, 2006 | 683% over the limit |
| Nitrogen, ammonia total [as N] | 12 | 107 | 11 | April 30, 2019 | 935% over the limit |
| pH | 2 | 111 | 10 | March 31, 2019 | |
| BOD, 5-day, 20 deg. C | 2 | 104 | 8 | May 31, 2001 | 163% over the limit |
| Coliform, fecal general | 0 | 51 | 5 | August 31, 2001 | 28,400% over the limit |
| Flow rate | 2 | 106 | 0 | ||
| Temperature, water deg. centigrade | 2 | 104 | 0 | ||
| Chlorine, total residual | 0 | 42 | 0 | ||
| Duration | 0 | 14 | 0 | ||
| Flow, total | 1 | 9 | 0 | ||
| Duration of discharge | 1 | 9 | 0 | ||
| E. coli, colony forming units [CFU] | 2 | 0 | 0 | ||
| Flowing, Receiving Stream | 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 SD0020338.
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, SD0020338.
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 SD0020338 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.