Clean Water Act discharge permit · NPDES IL0024937
DESOTO STP, VILLAGE OF, De Soto, IL: NPDES IL0024937 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
DESOTO STP, VILLAGE OF, held by DESOTO, VILLAGE OF, holds NPDES permit IL0024937, which discharges to Big Muddy River. EPA’s file records it issued October 8, 2020 and expiring October 31, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | DESOTO STP, VILLAGE OF |
|---|---|
| Permittee as filed | DESOTO, VILLAGE OF |
| NPDES ID | IL0024937 |
| 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 | October 8, 2020 |
| Expiration date | October 31, 2025 |
| Address | De Soto, IL 62924 |
| Receiving water | BIG MUDDY RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Mud Creek-Big Muddy River (HUC 071401061201) |
| Program components on file | Biosolids, POTW |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 10Pollutants on file
- 10Under a numeric limit
- 8With a violation of any kind
- 6With 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, carbonaceous [5 day, 20 C] | 4 | 265 | 253 | August 31, 2023 | 8,997% over the limit |
| Solids, total suspended | 5 | 119 | 113 | July 31, 2023 | 354% over the limit |
| Coliform, fecal general | 1 | 100 | 99 | August 31, 2025 | 99,999% over the limit |
| Chlorine, total residual | 2 | 99 | 92 | September 30, 2025 | 23,100% over the limit |
| Oxygen, dissolved [DO] | 5 | 68 | 65 | September 30, 2023 | 94% over the limit |
| pH | 2 | 3 | 1 | August 31, 2016 | |
| Flow, in conduit or thru treatment plant | 4 | 12 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 1 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 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 IL0024937.
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, IL0024937.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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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 IL0024937 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.