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Clean Water Act discharge permit · NPDES IA0052331

REG RALSTON LLC, Ralston, IA: NPDES IA0052331 discharge permit, effluent exceedances, inspections, penalties

REG RALSTON LLC holds NPDES permit IA0052331. EPA’s file records it issued July 1, 2021 and expiring June 30, 2026. 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 filedREG RALSTON LLC
Permittee as filedREG RALSTON LLC
NPDES IDIA0052331
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
IssuedJuly 1, 2021
Expiration dateJune 30, 2026
Issuing agencySTA
AddressRalston, IA 51459
SubwatershedOtter Creek (HUC 071000061401)
NAICS325193 – Ethyl Alcohol Manufacturing
SIC2869 – Industrial Organic Chemicals
Other EPA IDs (FRS)RCRA handler IAR000513986

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

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
Chlorine, total residual473August 31, 20185% over the limit
Nitrogen, nitrate total [as N]4120
Iron, total [as Fe]480
pH260
Nitrogen, ammonia total [as N]4800
Temperature, water deg. fahrenheit2400

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 IA0052331.

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 IA0052331 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 discharge permit IA0052331, held by REG RALSTON LLC in Ralston, IA, and shows the permit as administratively continued with a minor discharger class. The facts list 6 pollutants under a numeric limit and 1 pollutant with an effluent exceedance, within the Otter Creek (HUC 071000061401) subwatershed.