401 West Plant Road, Ennis, TX 75119 · Ellis County · Publicly Owned Treatment Works
City Of Ennis Wastewater Treatment Plant is a publicly owned wastewater treatment works in Ennis, Ellis County, Texas treating an average of 3.87 million gallons per day against a permitted design capacity of 4 MGD, serving about 21,124 residents. It discharges under NPDES permit TX0047261 (effective), which expires in July 2028, with 3 recorded violations in the last three years. EPA has recorded 3 formal enforcement actions naming the plant, the latest in October 2005.
9 treatment structures and unit processes identified at City Of Ennis Wastewater Treatment Plant.
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See the full treatment train at City Of Ennis Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for City Of Ennis Wastewater Treatment Plant in EPA's ICIS system.
Latest case · Oct 2005
Ennis, City of
Administrative order · SDWA, Intentional Acts · Unilateral Administrative Order Without Adjudication · Compliance actions $1,000
EPA's description of the case:
“Failed to submit vulnerability assessment report”
Source: EPA ECHO, civil enforcement case 06-2005-1325.
Full case history with a free Klarifi account
Every action against City Of Ennis Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
31 verified contacts for City Of Ennis Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 31 verified contacts (28 more than shown)
Names, validated emails and direct phone numbers for decision-makers at City Of Ennis Wastewater Treatment Plant, plus the full compliance history and discharge data.
Ennis · 3 mi away
0.3 MGD
Palmer · 9 mi away
0.48 MGD
Blooming Grove · 15 mi away
0.08 MGD
Italy · 17 mi away
0.24 MGD
Corsicana · 19 mi away
3.85 MGD
Frost · 19 mi away
0.05 MGD
Red Oak · 20 mi away
7.15 MGD
Scurry · 20 mi away
0.0019 MGD
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 April 12, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms