Clean Water Act discharge permit · NPDES ILG580107
TILDEN STP, Tilden, IL: NPDES ILG580107 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
TILDEN STP, held by TILDEN, VILLAGE OF, holds NPDES permit ILG580107, which discharges to Plum Creek. EPA’s file records it issued March 12, 2014 and expiring June 30, 2018. 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 | TILDEN STP |
|---|---|
| Permittee as filed | TILDEN, VILLAGE OF |
| NPDES ID | ILG580107 |
| 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 | March 12, 2014 |
| Expiration date | June 30, 2018 |
| Address | Tilden, IL 62292 |
| Receiving water | PLUM CREEK |
| Subwatershed | Town of Tilden-Plum Creek (HUC 071402040701) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 9With 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 | 5 | 319 | 71 | July 31, 2026 | 276% over the limit |
| Oxygen, dissolved [DO] | 1 | 64 | 42 | July 31, 2026 | 90% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 244 | 40 | April 30, 2025 | 264% over the limit |
| pH | 2 | 108 | 2 | April 30, 2021 | |
| Chlorine, total residual | 1 | 56 | 1 | August 31, 2021 | 100% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 202 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 48 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 22 | 0 | ||
| Coliform, fecal general | 1 | 10 | 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 ILG580107.
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, ILG580107.
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- One watershed — $2,990/year
- One state — $4,990/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 ILG580107 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.