Clean Water Act discharge permit · NPDES IL0048526
ROMEOVILLE WASTEWATER TREATMENT FACILITY, Romeoville, IL: NPDES IL0048526 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 11Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
ROMEOVILLE WASTEWATER TREATMENT FACILITY, held by ROMEOVILLE, VILLAGE OF, holds NPDES permit IL0048526, which discharges to Des Plaines River. EPA’s file records it issued January 25, 2011 and expiring February 29, 2016. 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 | ROMEOVILLE WASTEWATER TREATMENT FACILITY |
|---|---|
| Permittee as filed | ROMEOVILLE, VILLAGE OF |
| NPDES ID | IL0048526 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | January 25, 2011 |
| Expiration date | February 29, 2016 |
| Address | Romeoville, IL 60446 |
| Receiving water | DES PLAINES RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Maple Lake-Chicago Sanitary and Ship Canal (HUC 071200040705) |
| Program components on file | Biosolids, POTW, Pretreatment |
| 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
- 32Pollutants on file
- 11Under a numeric limit
- 27With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 96 | 305 | 305 | March 31, 2022 | 1,247% over the limit |
| Solids, total suspended | 9 | 75 | 71 | August 31, 2007 | 500% over the limit |
| Coliform, fecal general | 2 | 55 | 55 | September 30, 2015 | 99,999% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 53 | 49 | August 31, 2007 | 482% over the limit |
| Chlorine, total residual | 2 | 28 | 20 | May 31, 2003 | 1,180% over the limit |
| pH | 4 | 4 | 0 | ||
| Vector attraction reduction alternative used | 0 | 4 | 0 | ||
| Copper, total [as Cu] | 0 | 2 | 0 | ||
| Oil & Grease | 0 | 1 | 0 | ||
| Cyanide, total [as CN] | 0 | 1 | 0 | ||
| Cyanide, free [amenable to chlorination] | 0 | 1 | 0 | ||
| Fluoride, total [as F] | 0 | 1 | 0 | ||
| Arsenic, total [as As] | 0 | 1 | 0 | ||
| Barium, total [as Ba] | 0 | 1 | 0 | ||
| Cadmium, total [as Cd] | 0 | 1 | 0 | ||
| Chromium, hexavalent [as Cr] | 0 | 1 | 0 | ||
| Chromium, total [as Cr] | 0 | 1 | 0 | ||
| Iron, total [as Fe] | 0 | 1 | 0 | ||
| Iron, dissolved [as Fe] | 0 | 1 | 0 | ||
| Lead, total [as Pb] | 0 | 1 | 0 | ||
| Manganese, total [as Mn] | 0 | 1 | 0 | ||
| Nickel, total [as Ni] | 0 | 1 | 0 | ||
| Silver, total [as Ag] | 0 | 1 | 0 | ||
| Zinc, total [as Zn] | 0 | 1 | 0 | ||
| Selenium, total [as Se] | 0 | 1 | 0 | ||
| Phenolics, total recoverable | 0 | 1 | 0 | ||
| Mercury, total [as Hg] | 0 | 1 | 0 | ||
| Oxygen, dissolved [DO] | 10 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 0 | 0 | ||
| Nitrogen, total [as N] | 4 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 5, 2026 | Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
| July 4, 2026 | Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
| January 16, 2026 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
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.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.