Stewart Creek Wastewater Treatment Plant
1 Harris Plz, The Colony, TX 75056 · Denton County · Publicly Owned Treatment Works
- Average flow
- 4.62 MGD
- Design flow
- 6.3 MGD
- NPDES permit
- TX0053112
- Effective
- Permit expires
- February 2027
- Population served
- 45,143
- CWNS 2022
Stewart Creek Wastewater Treatment Plant is a publicly owned wastewater treatment works in The Colony, Denton County, Texas treating an average of 4.62 million gallons per day against a permitted design capacity of 6.3 MGD, serving about 45,143 residents. It discharges under NPDES permit TX0053112 (effective), which expires in February 2027, with 28 recorded violations in the last three years. EPA has recorded 3 formal enforcement actions naming the plant, the latest in April 2025.
Treatment technology
One treatment structure or unit process identified at Stewart Creek Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Stewart Creek Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 28
- Effluent violations
- 1
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 Stewart Creek Wastewater Treatment Plant in EPA's ICIS system.
- Formal actions
- 3
- 1 since FY2020
- Compliance actions
- $50,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Apr 2025
City of the Colony
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $8,000
EPA's description of the case:
“The City of the Colony was issued the order resulting from permit effluent violations. A corrective action plan is required.”
Source: EPA ECHO, civil enforcement case 06-2022-1706.
Full case history with a free Klarifi account
Every action against Stewart Creek Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
22 verified contacts for Stewart Creek Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 22 verified contacts (19 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Stewart Creek Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Texas
Frisco · 2 mi away
7.09 MGD
Hackberry · 4 mi away
0.74 MGD
Little Elm · 4 mi away
3.51 MGD
Lakewood Village · 5 mi away
0.15 MGD
Lewisville · 7 mi away
6.31 MGD
Frisco · 7 mi away
—
Lewisville · 8 mi away
8.62 MGD
Lewisville · 9 mi away
5.41 MGD
Stewart Creek 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 May 28, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms