Clean Water Act discharge permit · NPDES IL0077666
WILLIAMSON ENERGY LLC, Johnston City, IL: NPDES IL0077666 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
WILLIAMSON ENERGY LLC holds NPDES permit IL0077666, which discharges to Unnamed Tribs To Pond Creek. EPA’s file records it issued June 28, 2005 and expiring July 31, 2010. 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 | WILLIAMSON ENERGY LLC |
|---|---|
| Permittee as filed | WILLIAMSON ENERGY LLC |
| NPDES ID | IL0077666 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 28, 2005 |
| Expiration date | July 31, 2010 |
| Address | Johnston City, IL 62951 |
| Receiving water | UNNAMED TRIBS TO POND CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Town of West Frankfort-Pond Creek (HUC 071401060501) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 29Pollutants on file
- 10Under a numeric limit
- 29With 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 |
|---|---|---|---|---|---|
| Chloride [as Cl] | 24 | 155 | 48 | March 31, 2024 | 1,060% over the limit |
| Sulfate, total [as SO4] | 24 | 171 | 37 | November 30, 2022 | 640% over the limit |
| Solids, total suspended | 24 | 136 | 17 | March 31, 2026 | 279% over the limit |
| pH | 32 | 191 | 10 | December 31, 2020 | |
| Solids, settleable | 8 | 34 | 4 | March 31, 2015 | 300% over the limit |
| Nitrogen, ammonia total [as N] | 0 | 1 | 1 | July 31, 2025 | 28% over the limit |
| Flow, in conduit or thru treatment plant | 16 | 136 | 0 | ||
| Iron, total [as Fe] | 24 | 119 | 0 | ||
| Copper, dissolved [as Cu] | 0 | 88 | 0 | ||
| Nickel, dissolved [as Ni] | 0 | 88 | 0 | ||
| Manganese, total [as Mn] | 9 | 62 | 0 | ||
| Hardness, total [as CaCO3] | 0 | 54 | 0 | ||
| Alkalinity, total [as CaCO3] | 8 | 51 | 0 | ||
| Acidity, total [as CaCO3] | 8 | 51 | 0 | ||
| Cadmium, total [as Cd] | 0 | 45 | 0 | ||
| Nickel, total [as Ni] | 0 | 29 | 0 | ||
| Copper, total [as Cu] | 0 | 24 | 0 | ||
| Zinc, total [as Zn] | 0 | 20 | 0 | ||
| Mercury, total [as Hg] | 0 | 20 | 0 | ||
| Arsenic, total [as As] | 0 | 12 | 0 | ||
| Barium, total [as Ba] | 0 | 12 | 0 | ||
| Chromium, hexavalent [as Cr] | 0 | 12 | 0 | ||
| Chromium, total [as Cr] | 0 | 12 | 0 | ||
| Iron, dissolved [as Fe] | 0 | 12 | 0 | ||
| Lead, total [as Pb] | 0 | 12 | 0 | ||
| Silver, total [as Ag] | 0 | 12 | 0 | ||
| Selenium, total [as Se] | 0 | 12 | 0 | ||
| Phenolics, total recoverable | 0 | 12 | 0 | ||
| Flow rate | 0 | 2 | 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 IL0077666.
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, IL0077666.
Start the watch
- One permit holder — $99/month
- 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 IL0077666 there.
Nearby on the register
- Discharge permits in Johnston City
- Every permit record in Johnston City, A to Z
- Discharge permits in Illinois
- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.