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Clean Water Act discharge permit · NPDES ILR10ZH1I

66P04, Ottawa, IL: NPDES ILR10ZH1I discharge permit, effluent exceedances, inspections, penalties

66P04, held by D Construction, Inc., holds NPDES permit ILR10ZH1I. EPA’s file records it issued June 6, 2026 and expiring August 31, 2028.

66P04, Ottawa, Illinois: Coverage under a general permit ILR10ZH1I, held by D Construction, Inc.; Construction stormwater; Effective; issued June 6, 2026, term to August 31, 2028, by IEPA.

Illinois holds 5,215 Construction stormwater coverages of this permit type in EPA’s file; 4,758 were issued before ILR10ZH1I. D Construction, Inc. holds 6 permits in Illinois.

Other permits held by D Construction, Inc.

Coverages issued nearest ILR10ZH1I

66P04 among its neighbors

EPA’s permit file holds 2 discharge permits in the Little Indian Creek subwatershed (HUC 071200070508), ILR10ZH1I among them.

Other permits in the Little Indian Creek subwatershed (HUC 071200070508)

What the register holds for 66P04: its NPDES ID, its permit type and status, its dates, its address in Ottawa, Illinois. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ILR10ZH1I.

Identity

Facility as filed66P04
Permittee as filedD Construction, Inc.
NPDES IDILR10ZH1I
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJune 6, 2026
Expiration dateAugust 31, 2028
Issuing agencyIEPA
AddressOttawa, IL 61350
SubwatershedLittle Indian Creek (HUC 071200070508)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES ILR10ZH1I.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES ILR10ZH1I.

Inspections

EPA’s inspection file holds no inspection for NPDES ILR10ZH1I.

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 ILR10ZH1I.

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, ILR10ZH1I.

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Nearby on the register

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

What this page shows

The Little Indian Creek subwatershed holds 2 NPDES permits, including 66P04. Ottawa has 15 storm water construction permits, and 0.0% of them carry a violation on file.