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Clean Water Act discharge permit · NPDES TX0143898

STANLEY CREEK WWTP, Gunter, TX: NPDES TX0143898 discharge permit, effluent exceedances, inspections, penalties

STANLEY CREEK WWTP, held by MUSTANG SPECIAL UTILITY DISTRICT, holds NPDES permit TX0143898, which discharges to Lake Lavon. EPA’s file records it issued September 25, 2023 and expiring September 25, 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.

Identity

Facility as filedSTANLEY CREEK WWTP
Permittee as filedMUSTANG SPECIAL UTILITY DISTRICT
NPDES IDTX0143898
Permit statusEffective
Permit typeIndividual permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedSeptember 25, 2023
Expiration dateSeptember 25, 2028
AddressGunter, TX 76227
Receiving waterLake Lavon
SubwatershedSquirrel Creek-East Fork Trinity River (HUC 120301060201)

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

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
Nitrogen, ammonia total [as N]63021April 30, 20243,958% over the limit
Phosphorus, total [as P]62718May 31, 20262,315% over the limit
Solids, total suspended62213April 30, 20242,120% over the limit
BOD, carbonaceous [5 day, 20 C]6126November 30, 20233,129% over the limit
Flow, in conduit or thru treatment plant4126March 31, 2024419% over the limit
Oxygen, dissolved [DO]285April 30, 202489% over the limit
E. coli422March 31, 2024868% over the limit
pH200
Chlorine, total residual200

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

DateWhat EPA recordedAgency
May 4, 2026Permit Violations - Violation Specified in CommentST6
July 23, 2025Permit Violations - Violation Specified in CommentST6

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, TX0143898.

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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

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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 TX0143898 there.

Nearby on the register

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