City Of Mason WWTP
.75Mi NE Intx Ushwy 87/Fm 1723, Mason, TX 76856 · Mason County · Publicly Owned Treatment Works
- Average flow
- 0.27 MGD
- Design flow
- 0.35 MGD
- NPDES permit
- TX0071111
- Administratively continued
- Permit expires
- May 2025
- Population served
- 2,114
- CWNS 2022
City Of Mason WWTP is a publicly owned wastewater treatment works in Mason, Mason County, Texas treating an average of 0.27 million gallons per day against a permitted design capacity of 0.35 MGD, serving about 2,114 residents. It discharges under NPDES permit TX0071111 (administratively continued), which expires in May 2025, with 35 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at City Of Mason WWTP.
Available with a free Klarifi account
See the full treatment train at City Of Mason WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 35
- Effluent violations
- 15
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for City Of Mason WWTP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at City Of Mason WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Texas
Brady · 28 mi away
—
Junction · 36 mi away
0.15 MGD
Menard · 36 mi away
0.16 MGD
Fredericksburg · 40 mi away
1.31 MGD
San Saba · 44 mi away
—
Kingsland · 46 mi away
0.59 MGD
Eden · 49 mi away
0.26 MGD
Comfort · 56 mi away
0.38 MGD
City Of Mason 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 April 11, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms