Clean Water Act discharge permit · NPDES SDG589101
ISABEL WASTEWATER FACILITY, Isabel, SD: NPDES SDG589101 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
ISABEL WASTEWATER FACILITY, held by ISABEL, TOWN OF, holds NPDES permit SDG589101. EPA’s file records it issued April 25, 2016 and expiring December 31, 2020. 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 | ISABEL WASTEWATER FACILITY |
|---|---|
| Permittee as filed | ISABEL, TOWN OF |
| NPDES ID | SDG589101 |
| 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 | April 25, 2016 |
| Expiration date | December 31, 2020 |
| Issuing agency | U.S. EPA Region 8 |
| Address | Isabel, SD 57633 |
| Subwatershed | Isabel Lake (HUC 101303030902) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 7Pollutants on file
- 0Under a numeric limit
- 7With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 0 | 30 | 0 | ||
| pH | 0 | 30 | 0 | ||
| Solids, total suspended | 0 | 30 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 30 | 0 | ||
| Oil & Grease | 0 | 15 | 0 | ||
| Floating solids, waste or visible foam-visual | 0 | 15 | 0 | ||
| Oil and grease visual | 0 | 15 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES SDG589101.
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 SDG589101.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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, SDG589101.
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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 SDG589101 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.