South Mesquite Regional Wastewater Treatment Plant
3500 Lawson Road, Mesquite, TX 75149 · Dallas County · Publicly Owned Treatment Works
- Average flow
- 43.31 MGD
- Design flow
- 41 MGD
- NPDES permit
- TX0047431
- Effective
- Permit expires
- August 2027
- Population served
- 354,544
- CWNS 2022
South Mesquite Regional Wastewater Treatment Plant is a publicly owned wastewater treatment works in Mesquite, Dallas County, Texas treating an average of 43.31 million gallons per day against a permitted design capacity of 41 MGD, serving about 354,544 residents. It discharges under NPDES permit TX0047431 (effective), which expires in August 2027, with 24 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at South Mesquite Regional Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at South Mesquite Regional Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 24
- Effluent violations
- 18
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for South Mesquite Regional Wastewater Treatment Plant in EPA's ICIS system.
- Formal actions
- 0
- none on record
- EPA inspections
- 1
- latest Apr 2013
No formal federal enforcement case is on record for this plant.
Full case history with a free Klarifi account
Every action against South Mesquite Regional Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
1 verified contact for South Mesquite Regional Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at South Mesquite Regional Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Texas
Crandall · 9 mi away
0.91 MGD
Rockwall · 13 mi away
1.03 MGD
Dallas · 14 mi away
118.1 MGD
Garland · 14 mi away
25.28 MGD
Terrell · 16 mi away
4.75 MGD
Scurry · 17 mi away
0.0019 MGD
City Of Royse City · 17 mi away
0.06 MGD
Rockwall County · 17 mi away
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South Mesquite Regional Wastewater Treatment Plant: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026; facility record last updated August 13, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Filter press · FOG · all terms