Little Elm WWTP
1600 Mark Tree Lane, Little Elm, TX 75068 · Denton County · Publicly Owned Treatment Works
- Average flow
- 3.51 MGD
- Design flow
- 4 MGD
- NPDES permit
- TX0053783
- Effective
- Permit expires
- January 2027
- Population served
- 24,308
- CWNS 2022
Little Elm WWTP is a publicly owned wastewater treatment works in Little Elm, Denton County, Texas treating an average of 3.51 million gallons per day against a permitted design capacity of 4 MGD, serving about 24,308 residents. It discharges under NPDES permit TX0053783 (effective), which expires in January 2027, with 21 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in July 2023.
Treatment technology
One treatment structure or unit process identified at Little Elm WWTP.
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See the full treatment train at Little Elm WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 21
- Effluent violations
- 14
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 Little Elm WWTP in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Compliance actions
- $15,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Jul 2023
Little Elm - Administrative Order
Administrative order · CWA, NPDES Permit Violations · Superseded by Another Enforcement Action · Compliance actions $15,000
EPA's description of the case:
“The AO was issued in response to effluent violations of permit limits. The AO requires the facility to; 1.) submit a list of specific actions taken to correct the violations and 2.) submit written…”
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Source: EPA ECHO, civil enforcement case 06-2023-1753.
Full case history with a free Klarifi account
Every action against Little Elm WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
7 verified contacts for Little Elm WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Little Elm WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Texas
Hackberry · 1 mi away
0.74 MGD
Frisco · 3 mi away
—
Lakewood Village · 4 mi away
0.15 MGD
Frisco · 4 mi away
7.09 MGD
The Colony · 4 mi away
4.62 MGD
Lewisville · 5 mi away
5.41 MGD
Lewisville · 5 mi away
1.82 MGD
Aubrey · 8 mi away
1.06 MGD
Little Elm 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 · WWTP · Biosolids · all terms