City Of Collinsville WWTP
0.5Mi SE Intx Ushwy 377 & Fm, Collinsville, TX 76233 · Grayson County · Publicly Owned Treatment Works
- Average flow
- 0.29 MGD
- Design flow
- 0.5 MGD
- NPDES permit
- TX0034410
- Effective
- Permit expires
- November 2026
- Population served
- 2,084
- CWNS 2022
City Of Collinsville WWTP is a publicly owned wastewater treatment works in Collinsville, Grayson County, Texas treating an average of 0.29 million gallons per day against a permitted design capacity of 0.5 MGD, serving about 2,084 residents. It discharges under NPDES permit TX0034410 (effective), which expires in November 2026, with 28 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at City Of Collinsville WWTP.
Available with a free Klarifi account
See the full treatment train at City Of Collinsville WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 28
- Effluent violations
- 28
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
3 verified contacts for City Of Collinsville WWTP, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at City Of Collinsville WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Texas
Tioga · 6 mi away
0.17 MGD
Sadler · 10 mi away
0.03 MGD
Gainesville · 10 mi away
0.01 MGD
Pilot Point · 10 mi away
0.98 MGD
Gunter · 11 mi away
0.44 MGD
Gainesville · 12 mi away
0.04 MGD
Celina · 14 mi away
0.57 MGD
Gunter · 14 mi away
0.15 MGD
City Of Collinsville WWTP: 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 May 26, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms