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Clean Water Act discharge permit · NPDES TXR1598WI

HORIZON LAKES OFFSITE, Mclendon Chisholm Etj, TX: NPDES TXR1598WI discharge permit, effluent exceedances, inspections, penalties

HORIZON LAKES OFFSITE, held by Atmos Energy Corporation, holds NPDES permit TXR1598WI, which discharges to Unnamed Tributary Of Long Branch. EPA’s file records it issued November 5, 2025 and expiring March 4, 2028. 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 HORIZON LAKES OFFSITE: its NPDES ID, its permit type and status, its dates, its address in Mclendon Chisholm Etj, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1598WI.

Identity

Facility as filedHORIZON LAKES OFFSITE
Permittee as filedAtmos Energy Corporation
NPDES IDTXR1598WI
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedNovember 5, 2025
Expiration dateMarch 4, 2028
AddressMclendon Chisholm Etj, TX 75032
Receiving waterUNNAMED TRIBUTARY OF LONG BRANCH
SubwatershedLong Branch-Buffalo Creek (HUC 120301060502)

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 TXR1598WI.

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 TXR1598WI.

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, TXR1598WI.

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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 TXR1598WI there.

Nearby on the register

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

What this page shows

HORIZON LAKES OFFSITE is one of 189 storm water construction permits on EPA's NPDES register in Rockwall County, and 66.7% of those permits have an earlier issue date than this permit. The permit is also one of 86 NPDES permits in the Long Branch-Buffalo Creek subwatershed, while 0.5% of the 189 storm water construction permits in Rockwall County have a violation on file.