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Clean Water Act discharge permit · NPDES ARR158798

ENTERGY ARKANSAS, LLC - IRONWOOD ENTERGY POWER STATION, Malvern, AR: NPDES ARR158798 discharge permit, effluent exceedances, inspections, penalties

ENTERGY ARKANSAS, LLC - IRONWOOD ENTERGY POWER STATION, held by Entergy Arkansas, LLC, holds NPDES permit ARR158798. EPA’s file records it issued September 22, 2025 and expiring October 31, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for ENTERGY ARKANSAS, LLC - IRONWOOD ENTERGY POWER STATION: its NPDES ID, its permit type and status, its dates, its address in Malvern, Arkansas. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ARR158798.

Identity

Facility as filedENTERGY ARKANSAS, LLC - IRONWOOD ENTERGY POWER STATION
Permittee as filedEntergy Arkansas, LLC
NPDES IDARR158798
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedSeptember 22, 2025
Expiration dateOctober 31, 2026
Issuing agencyArkansas Energy & Environment
AddressMalvern, AR 72104
SubwatershedLake Hamilton Dam (HUC 080401010806)
Other EPA IDs (FRS)RCRA handler ARD000632935; ICIS-AIR source AR0000000505900011

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES ARR158798.

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 ARR158798.

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, ARR158798.

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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 ARR158798 there.

Nearby on the register

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

What this page shows

The ENTERGY ARKANSAS, LLC - IRONWOOD ENTERGY POWER STATION permit is one of 9 storm water construction permits in Hot Spring County, and 66.7% of those 9 permits were issued before it. Among the 21 NPDES permits in the Lake Hamilton Dam subwatershed, this permit sits in the same group, and the 0.0% of Hot Spring County storm water construction permits with a violation on file gives it company, since it records no pollutants under a numeric limit and no effluent exceedances.