Clean Water Act discharge permit · NPDES IL0070131
MAPLE PARK STP, VILLAGE OF, Maple Park, IL: NPDES IL0070131 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
MAPLE PARK STP, VILLAGE OF, held by MAPLE PARK, VILLAGE OF, holds NPDES permit IL0070131, which discharges to Union Ditch #2. EPA’s file records it issued December 14, 2018 and expiring November 30, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MAPLE PARK STP, VILLAGE OF |
|---|---|
| Permittee as filed | MAPLE PARK, VILLAGE OF |
| NPDES ID | IL0070131 |
| 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 | December 14, 2018 |
| Expiration date | November 30, 2023 |
| Address | Maple Park, IL 60151 |
| Receiving water | UNION DITCH #2 |
| Subwatershed | Union Ditch No. 3 (HUC 070900060503) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 9With a violation of any kind
- 3With 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 | 5 | 35 | 19 | July 31, 2025 | 165% over the limit |
| Oxygen, dissolved [DO] | 5 | 14 | 8 | September 30, 2019 | 96% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 16 | 4 | February 29, 2020 | 64% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 14 | 0 | ||
| pH | 2 | 6 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 4 | 0 | ||
| Chlorine, total residual | 1 | 4 | 0 | ||
| Coliform, fecal general | 1 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 1 | 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 IL0070131.
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, IL0070131.
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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 IL0070131 there.
Nearby on the register
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- Every permit record in Maple Park, A to Z
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- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.