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Clean Water Act discharge permit · NPDES IL0055344

IAWC - INDIAN COVE SUBDIVISION STP, Oregon, IL: NPDES IL0055344 discharge permit, effluent exceedances, inspections, penalties

IAWC - INDIAN COVE SUBDIVISION STP, held by PRAIRIE PATH WATER COMPANY (ROCKVALE), holds NPDES permit IL0055344, which discharges to Rock River. EPA’s file records it issued August 21, 2020 and expiring August 31, 2025. 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 filedIAWC - INDIAN COVE SUBDIVISION STP
Permittee as filedPRAIRIE PATH WATER COMPANY (ROCKVALE)
NPDES IDIL0055344
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedAugust 21, 2020
Expiration dateAugust 31, 2025
AddressOregon, IL 60661
Receiving waterROCK RIVER
SubwatershedSilver Creek-Rock River (HUC 070900050408)
SIC6552 – Subdividers And Developers

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

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Coliform, fecal general19276August 31, 202199,999% over the limit
Oxygen, dissolved [DO]54712July 31, 202156% over the limit
Solids, total suspended52173June 30, 2011247% over the limit
BOD, carbonaceous [5 day, 20 C]41691April 30, 200344% over the limit
Chlorine, total residual1441July 31, 202136% over the limit
Flow, in conduit or thru treatment plant41700
pH2860
BOD, 5-day, 20 deg. C1420
Nitrogen, ammonia total [as N]100

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

DateWhat EPA recordedAgency
February 17, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentST6
December 17, 2024Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6

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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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 IL0055344 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers NPDES permit IL0055344 for IAWC - INDIAN COVE SUBDIVISION STP in Oregon, IL, held by PRAIRIE PATH WATER COMPANY (ROCKVALE), with the permit listed as administratively continued and a Minor discharger class. The page lists 9 pollutants under a numeric limit and 5 pollutants with an effluent exceedance.