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Clean Water Act discharge permit · NPDES ILR10ZG1O

PANTHER CREEK WEST 7TH ADDITION, Springfield, IL: NPDES ILR10ZG1O discharge permit, effluent exceedances, inspections, penalties

PANTHER CREEK WEST 7TH ADDITION, held by J.C. Dowson Inc., holds NPDES permit ILR10ZG1O. EPA’s file records it issued September 7, 2025 and expiring August 31, 2028.

PANTHER CREEK WEST 7TH ADDITION, Springfield, Illinois: Coverage under a general permit ILR10ZG1O, held by J.C. Dowson Inc.; Construction stormwater; Effective; issued September 7, 2025, term to August 31, 2028, by IEPA.

Illinois holds 5,215 Construction stormwater coverages of this permit type in EPA’s file; 3,534 were issued before ILR10ZG1O.

Coverages issued nearest ILR10ZG1O

PANTHER CREEK WEST 7TH ADDITION among its neighbors

EPA’s permit file holds 14 discharge permits in the Polecat Creek subwatershed (HUC 071300070706), ILR10ZG1O among them.

Other permits in the Polecat Creek subwatershed (HUC 071300070706)

What the register holds for PANTHER CREEK WEST 7TH ADDITION: its NPDES ID, its permit type and status, its dates, its address in Springfield, Illinois. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ILR10ZG1O.

Identity

Facility as filedPANTHER CREEK WEST 7TH ADDITION
Permittee as filedJ.C. Dowson Inc.
NPDES IDILR10ZG1O
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedSeptember 7, 2025
Expiration dateAugust 31, 2028
Issuing agencyIEPA
AddressSpringfield, IL 62711
SubwatershedPolecat Creek (HUC 071300070706)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES ILR10ZG1O.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES ILR10ZG1O.

Inspections

EPA’s inspection file holds no inspection for NPDES ILR10ZG1O.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES ILR10ZG1O.

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, ILR10ZG1O.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

The 63 storm water construction permits in Springfield include 0.0% with a violation on file. The Polecat Creek subwatershed (HUC 071300070706) holds 14 NPDES permits, and PANTHER CREEK WEST 7TH ADDITION is among Springfield's register entries. Of the 63 Springfield permits, 71.4% carry an earlier issue date than this permit.