Clean Water Act discharge permit · NPDES SD0023388
BROOKINGS MUNICIPAL UTILITIES, Brookings, SD: NPDES SD0023388 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 0Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
BROOKINGS MUNICIPAL UTILITIES, held by BROOKINGS - CITY OF, holds NPDES permit SD0023388, which discharges to Big Sioux River. EPA’s file records it issued July 13, 1999 and expiring September 30, 2004. 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 | BROOKINGS MUNICIPAL UTILITIES |
|---|---|
| Permittee as filed | BROOKINGS - CITY OF |
| NPDES ID | SD0023388 |
| 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 | July 13, 1999 |
| Expiration date | September 30, 2004 |
| Address | Brookings, SD 57006 |
| Receiving water | BIG SIOUX RIVER |
| Subwatershed | Medary Creek-Big Sioux River (HUC 101702021110) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 21Pollutants on file
- 0Under a numeric limit
- 21With a violation of any kind
- 9With 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] | 0 | 10 | 6 | September 30, 2025 | 304% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 9 | 4 | April 30, 2011 | 108% over the limit |
| Solids, total suspended | 0 | 6 | 3 | April 30, 2011 | 59% over the limit |
| Coliform, fecal general | 0 | 5 | 3 | September 30, 2025 | 135% over the limit |
| Solids, suspended percent removal | 0 | 4 | 3 | April 30, 2011 | 145% over the limit |
| pH | 0 | 4 | 2 | December 31, 2012 | |
| Chlorine, total residual | 0 | 3 | 2 | April 30, 2010 | 1,742% over the limit |
| BOD, 5-day, percent removal | 0 | 3 | 2 | April 30, 2011 | 13% over the limit |
| Oxygen, dissolved [DO] | 0 | 2 | 1 | September 30, 2019 | 6% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 0 | 10 | 0 | ||
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 6 | 0 | ||
| IC25 Static Renewal 7 Day Chronic Chrpimephales | 0 | 3 | 0 | ||
| Temperature, water deg. centigrade | 0 | 2 | 0 | ||
| Flow rate | 0 | 2 | 0 | ||
| Alkalinity, total [as CaCO3] | 0 | 2 | 0 | ||
| Nitrogen, nitrate total [as N] | 0 | 2 | 0 | ||
| Hardness, total [as CaCO3] | 0 | 2 | 0 | ||
| Copper, total recoverable | 0 | 2 | 0 | ||
| Coliform, total general | 0 | 2 | 0 | ||
| Hydrocarbons, total petroleum | 0 | 1 | 0 | ||
| Oil and grease visual | 0 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 31, 2024 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | 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.
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, SD0023388.
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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 SD0023388 there.
Nearby on the register
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- Every permit record in South Dakota, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.