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Clean Water Act discharge permit · NPDES ILPIU007S

RHO CHEMICAL COMPANY, Joliet, IL: NPDES ILPIU007S discharge permit, effluent exceedances, inspections, penalties

RHO CHEMICAL COMPANY, held by Rho Chemical Company, holds NPDES permit ILPIU007S. EPA’s file records it issued October 1, 2024 and expiring September 30, 2028. 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.

What the register holds for RHO CHEMICAL COMPANY: its NPDES ID, its permit type and status, its dates, its address in Joliet, Illinois. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ILPIU007S.

Identity

Facility as filedRHO CHEMICAL COMPANY
Permittee as filedRho Chemical Company
NPDES IDILPIU007S
Permit statusEffective
Permit typeIndividual industrial user permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedOctober 1, 2024
Expiration dateSeptember 30, 2028
Issuing agencyJoliet Eastside Stp, City Of
AddressJoliet, IL 60435
Receiving water impaired303(D) Listed

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES ILPIU007S.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES ILPIU007S.

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

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, ILPIU007S.

Start the watch

How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

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 ILPIU007S there.

Nearby on the register

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