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Clean Water Act discharge permit · NPDES SCR10ZHRU

WEST ASHLEY TRANSMISSION MAIN EXTENSION, Charleston, SC: NPDES SCR10ZHRU discharge permit, effluent exceedances, inspections, penalties

WEST ASHLEY TRANSMISSION MAIN EXTENSION, held by Donal Benjamin, Charleston Water System, holds NPDES permit SCR10ZHRU. EPA’s file records it issued June 11, 2025 and expiring June 10, 2030. 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 WEST ASHLEY TRANSMISSION MAIN EXTENSION: its NPDES ID, its permit type and status, its dates, its address in Charleston, South Carolina. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES SCR10ZHRU.

Identity

Facility as filedWEST ASHLEY TRANSMISSION MAIN EXTENSION
Permittee as filedDonal Benjamin, Charleston Water System
NPDES IDSCR10ZHRU
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJune 11, 2025
Expiration dateJune 10, 2030
Issuing agencyState
AddressCharleston, SC 29414
SubwatershedStono River-Atlantic Intracoastal Waterway (HUC 030502020202)

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 SCR10ZHRU.

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 SCR10ZHRU.

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, SCR10ZHRU.

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  • 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 SCR10ZHRU there.

Nearby on the register

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

What this page shows

The WEST ASHLEY TRANSMISSION MAIN EXTENSION is one of 933 storm water construction permits in Charleston County, and 0.0% of those carry a violation on file. Of all 933 permits in that county, 72.7% were issued earlier than this one. It sits among 121 NPDES permits in the Stono River-Atlantic Intracoastal Waterway subwatershed, and it has no pollutant under a numeric limit and no pollutant with an effluent exceedance.