Clean Water Act discharge permit · NPDES IL0029939
MOLINE SOUTH SLOPE STP, Moline, IL: NPDES IL0029939 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 33Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
MOLINE SOUTH SLOPE STP, held by MOLINE, CITY OF, holds NPDES permit IL0029939, which discharges to Rock River. EPA’s file records it issued March 20, 2015 and expiring March 31, 2020. 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 | MOLINE SOUTH SLOPE STP |
|---|---|
| Permittee as filed | MOLINE, CITY OF |
| NPDES ID | IL0029939 |
| 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 | March 20, 2015 |
| Expiration date | March 31, 2020 |
| Address | Moline, IL 61265 |
| Receiving water | ROCK RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Case Creek-Rock River (HUC 070900051302) |
| 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
- 35Pollutants on file
- 33Under a numeric limit
- 10With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Coliform, fecal general | 3 | 27 | 25 | June 30, 2026 | 99,999% over the limit |
| Solids, total suspended | 10 | 2 | 2 | January 31, 1999 | 82% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 2 | 2 | November 30, 2019 | 50% over the limit |
| pH | 4 | 3 | 1 | February 29, 2000 | |
| Chlorine, total residual | 8 | 6 | 0 | ||
| Mercury, total [as Hg] | 8 | 3 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 0 | 3 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 0 | 3 | 0 | ||
| Nitrogen, total [as N] | 2 | 1 | 0 | ||
| Phosphorus, total [as P] | 2 | 1 | 0 | ||
| Oil & Grease | 6 | 0 | 0 | ||
| Cyanide, weak acid, dissociable | 6 | 0 | 0 | ||
| Cyanide, total [as CN] | 6 | 0 | 0 | ||
| Fluoride, total [as F] | 6 | 0 | 0 | ||
| Arsenic, total [as As] | 6 | 0 | 0 | ||
| Barium, total [as Ba] | 6 | 0 | 0 | ||
| Beryllium, total [as Be] | 6 | 0 | 0 | ||
| Cadmium, total [as Cd] | 6 | 0 | 0 | ||
| Chromium, hexavalent [as Cr] | 6 | 0 | 0 | ||
| Chromium, total [as Cr] | 6 | 0 | 0 | ||
| Copper, total [as Cu] | 6 | 0 | 0 | ||
| Iron, total [as Fe] | 6 | 0 | 0 | ||
| Iron, dissolved [as Fe] | 6 | 0 | 0 | ||
| Lead, total [as Pb] | 6 | 0 | 0 | ||
| Manganese, total [as Mn] | 6 | 0 | 0 | ||
| Thallium, total [as Tl] | 6 | 0 | 0 | ||
| Nickel, total [as Ni] | 6 | 0 | 0 | ||
| Silver, total [as Ag] | 6 | 0 | 0 | ||
| Zinc, total [as Zn] | 6 | 0 | 0 | ||
| Antimony, total [as Sb] | 6 | 0 | 0 | ||
| Selenium, total [as Se] | 6 | 0 | 0 | ||
| Phenolics, total recoverable | 6 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 0 | 0 | ||
| Flow | 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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 21, 2026 | Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
| February 9, 2026 | Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangerment | ST6 |
| January 11, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | ST6 |
| October 16, 2025 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | ST6 |
| October 9, 2025 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | ST6 |
| March 28, 2025 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
| January 31, 2025 | Wet-weather SSO 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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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 IL0029939 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.