Clean Water Act discharge permit · NPDES ILG580149
NIANTIC STP, VILLAGE OF, Niantic, IL: NPDES ILG580149 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
NIANTIC STP, VILLAGE OF, held by NIANTIC, VILLAGE OF, holds NPDES permit ILG580149, which discharges to Long Point Slough. EPA’s file records it issued April 18, 2014 and expiring June 30, 2018. 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 | NIANTIC STP, VILLAGE OF |
|---|---|
| Permittee as filed | NIANTIC, VILLAGE OF |
| NPDES ID | ILG580149 |
| 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 18, 2014 |
| Expiration date | June 30, 2018 |
| Address | Niantic, IL 62551 |
| Receiving water | LONG POINT SLOUGH |
| Subwatershed | Minier Lake-West Fork Sugar Creek (HUC 071300090606) |
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
- 3With 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 | 150 | 67 | January 31, 2026 | 386% over the limit |
| Oxygen, dissolved [DO] | 1 | 76 | 64 | July 31, 2026 | 85% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 94 | 26 | March 31, 2026 | 120% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 68 | 0 | ||
| pH | 2 | 34 | 0 | ||
| Chlorine, total residual | 1 | 16 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 15 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 12 | 0 | ||
| Coliform, fecal general | 1 | 5 | 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 ILG580149.
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, ILG580149.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 ILG580149 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.