How much wastewater does City Of Collinsville WWTP treat?

City Of Collinsville WWTP treats an average of 0.15 MGD and is permitted for a design flow of 0.5 MGD.

What treatment technology does City Of Collinsville WWTP use?

Klarifi has identified clarifiers at the Collinsville facility.

What is the NPDES permit for City Of Collinsville WWTP?

The facility discharges under NPDES permit TX0034410, currently effective, expiring November 2026.

Is City Of Collinsville WWTP in compliance?

Discharge monitoring reports show 28 violations at City Of Collinsville WWTP in the last three years, 28 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates City Of Collinsville WWTP and how do I contact them?

City Of Collinsville WWTP is a publicly owned treatment works in Collinsville, Texas. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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City Of Collinsville WWTP

Collinsville, TX · Grayson County · Publicly Owned Treatment Works

Average flow: 0.15 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 0.15 million gallons per day against a permitted design capacity of 0.5 MGD, serving about 2,084 residents. Treatment on site includes clarifiers. It discharges under NPDES permit TX0034410 (effective), which expires in November 2026, with 28 recorded violations in the last three years.

Treatment technology

Treatment structures identified at this facility. Exact unit counts are available in Klarifi.

Clarifiers

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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

1 verified contact for City Of Collinsville WWTP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at City Of Collinsville WWTP, plus the full compliance history and discharge data.

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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 September 11, 2026; facility record last updated May 26, 2025.

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