Clean Water Act discharge permit · NPDES SD0023698
CHAMBERLAIN, CITY OF, Chamberlain, SD: NPDES SD0023698 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 35Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
CHAMBERLAIN, CITY OF, held by Chamberlain, City of, holds NPDES permit SD0023698, which discharges to Lake Francis Case (Missouri River). EPA’s file records it issued June 7, 2011 and expiring June 30, 2016. 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 | CHAMBERLAIN, CITY OF |
|---|---|
| Permittee as filed | Chamberlain, City of |
| NPDES ID | SD0023698 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | June 7, 2011 |
| Expiration date | June 30, 2016 |
| Issuing agency | SDDENR |
| Address | Chamberlain, SD 57325 |
| 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
- 37Pollutants on file
- 35Under a numeric limit
- 22With a violation of any kind
- 7With 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 |
|---|---|---|---|---|---|
| Coliform, total general | 2 | 18 | 18 | April 30, 2016 | 700% over the limit |
| pH | 2 | 17 | 17 | June 30, 2003 | |
| Coliform, fecal general | 2 | 13 | 13 | June 30, 2012 | 12,400% over the limit |
| Chlorine, total residual | 1 | 10 | 10 | December 31, 2009 | 10,584% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 2 | 2 | April 30, 2012 | 27% over the limit |
| E. coli, colony forming units [CFU] | 4 | 1 | 1 | June 30, 2026 | 6% over the limit |
| Solids, suspended percent removal | 1 | 1 | 1 | May 31, 2026 | 33% over the limit |
| Zinc, total recoverable | 2 | 4 | 0 | ||
| Cyanide, total [as CN] | 2 | 2 | 0 | ||
| Arsenic, total recoverable | 2 | 2 | 0 | ||
| Selenium, total recoverable | 2 | 2 | 0 | ||
| Nickel, total recoverable | 2 | 2 | 0 | ||
| Cadmium, total recoverable | 2 | 2 | 0 | ||
| Lead, total recoverable | 2 | 2 | 0 | ||
| Copper, total recoverable | 2 | 2 | 0 | ||
| Molybdenum, total recoverable | 2 | 2 | 0 | ||
| Mercury, total [as Hg] | 2 | 2 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 2 | 0 | ||
| Cyanide, free [as free] | 0 | 2 | 0 | ||
| Aluminum, total recoverable | 0 | 2 | 0 | ||
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | 1 | 1 | 0 | ||
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | 1 | 1 | 0 | ||
| Solids, total suspended | 3 | 0 | 0 | ||
| Temperature, water deg. centigrade | 2 | 0 | 0 | ||
| Flow rate | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 0 | 0 | ||
| Cyanide, weak acid, dissociable | 2 | 0 | 0 | ||
| Thallium, total recoverable | 2 | 0 | 0 | ||
| Beryllium, total recoverable [as Be] | 2 | 0 | 0 | ||
| Silver total recoverable | 2 | 0 | 0 | ||
| Chromium, total recoverable | 2 | 0 | 0 | ||
| Antimony, total recoverable | 2 | 0 | 0 | ||
| Phenols | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| Oil and grease, hexane extr method | 1 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 | ||
| Oil and grease visual | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 28, 2026 | Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
| July 27, 2026 | Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
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.
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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 SD0023698 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.