Clean Water Act discharge permit · NPDES IL0022675
CARLINVILLE STP, Carlinville, IL: NPDES IL0022675 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 33Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
CARLINVILLE STP, held by CARLINVILLE, CITY OF, holds NPDES permit IL0022675, which discharges to Briar Creek. EPA’s file records it issued July 16, 2015 and expiring July 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 | CARLINVILLE STP |
|---|---|
| Permittee as filed | CARLINVILLE, CITY OF |
| NPDES ID | IL0022675 |
| 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 | July 16, 2015 |
| Expiration date | July 31, 2020 |
| Address | Carlinville, IL 62626 |
| Receiving water | BRIAR CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Spanish Needle Creek-Upper Macoupin Creek (HUC 071300120109) |
| Program components on file | Biosolids, CSO, 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
- 42Pollutants on file
- 33Under a numeric limit
- 41With a violation of any kind
- 12With 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 | 8 | 68 | 42 | June 30, 2026 | 487% over the limit |
| Nitrogen, ammonia total [as N] | 25 | 69 | 39 | July 31, 2026 | 331% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 104 | 28 | July 31, 2026 | 1,745% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 36 | 21 | July 31, 2026 | 183% over the limit |
| pH | 6 | 48 | 20 | January 31, 2020 | |
| Mercury, total [as Hg] | 4 | 60 | 19 | July 31, 2026 | 73% over the limit |
| Zinc, total [as Zn] | 6 | 66 | 15 | January 31, 2025 | 264% over the limit |
| Coliform, fecal general | 2 | 31 | 13 | July 31, 2020 | 99,999% over the limit |
| Copper, total [as Cu] | 6 | 20 | 9 | March 31, 2025 | 427% over the limit |
| Chromium, hexavalent [as Cr] | 6 | 16 | 5 | February 28, 2026 | 82% over the limit |
| Cyanide, free [amenable to chlorination] | 6 | 12 | 4 | April 30, 2018 | 237% over the limit |
| Chlorine, total residual | 3 | 33 | 3 | January 31, 2020 | 44% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 42 | 0 | ||
| Oxygen, dissolved [DO] | 8 | 14 | 0 | ||
| Phosphorus, total [as P] | 3 | 14 | 0 | ||
| Flow, total | 2 | 11 | 0 | ||
| Lead, total [as Pb] | 2 | 8 | 0 | ||
| Nickel, total [as Ni] | 2 | 8 | 0 | ||
| Silver, total [as Ag] | 2 | 8 | 0 | ||
| Selenium, total [as Se] | 2 | 8 | 0 | ||
| Phenolics, total recoverable | 2 | 8 | 0 | ||
| Iron, total [as Fe] | 2 | 7 | 0 | ||
| Iron, dissolved [as Fe] | 2 | 7 | 0 | ||
| Manganese, total [as Mn] | 2 | 7 | 0 | ||
| Nitrogen, total [as N] | 1 | 6 | 0 | ||
| Oil & Grease | 2 | 3 | 0 | ||
| Cyanide, total [as CN] | 2 | 3 | 0 | ||
| Arsenic, total [as As] | 2 | 3 | 0 | ||
| Cadmium, total [as Cd] | 2 | 3 | 0 | ||
| Chromium, total [as Cr] | 2 | 3 | 0 | ||
| Cyanide, weak acid, dissociable | 0 | 3 | 0 | ||
| Fluoride, total [as F] | 2 | 2 | 0 | ||
| Barium, total [as Ba] | 2 | 2 | 0 | ||
| Arsenic, dry weight | 0 | 1 | 0 | ||
| Selenium, dry weight | 0 | 1 | 0 | ||
| Copper, dry weight | 0 | 1 | 0 | ||
| Cadmium, dry weight | 0 | 1 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 0 | 1 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 0 | 1 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 0 | 1 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 0 | 1 | 0 | ||
| Overflows | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 16, 2025 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | 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.