Clean Water Act discharge permit · NPDES IL0020001
AVISTON - STP, VILLAGE OF, Aviston, IL: NPDES IL0020001 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
AVISTON - STP, VILLAGE OF, held by AVISTON. VILLAGE OF, holds NPDES permit IL0020001, which discharges to Lake Branch. EPA’s file records it issued July 9, 2018 and expiring July 31, 2023. 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 | AVISTON - STP, VILLAGE OF |
|---|---|
| Permittee as filed | AVISTON. VILLAGE OF |
| NPDES ID | IL0020001 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 9, 2018 |
| Expiration date | July 31, 2023 |
| Address | Aviston, IL 62216 |
| Receiving water | LAKE BRANCH |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Lake Branch (HUC 071402040105) |
| Program components on file | Biosolids, POTW |
| 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
- 11Pollutants on file
- 10Under a numeric limit
- 11With a violation of any kind
- 7With 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 |
|---|---|---|---|---|---|
| Copper, total [as Cu] | 0 | 153 | 146 | February 28, 2018 | 1,125% over the limit |
| Solids, total suspended | 5 | 143 | 91 | April 30, 2022 | 99,999% over the limit |
| Oxygen, dissolved [DO] | 5 | 77 | 77 | April 30, 2024 | 83% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 102 | 61 | February 28, 2021 | 1,041% over the limit |
| Nitrogen, ammonia total [as N] | 1 | 28 | 16 | February 29, 2000 | 357% over the limit |
| Chlorine, total residual | 1 | 19 | 8 | November 30, 2007 | 400% over the limit |
| Coliform, fecal general | 1 | 8 | 1 | July 31, 1999 | 2,400% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 66 | 0 | ||
| pH | 2 | 20 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 16 | 0 | ||
| Phosphorus, total [as P] | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 22, 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.
Watch this permit
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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 IL0020001 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.