Fm Rd 1093 & St Hwy 36, Wallis, TX 77485 · Austin County · Publicly Owned Treatment Works
City Of Wallis-Plant - 6810 Marek Street is a publicly owned wastewater treatment plant in Wallis, Austin County, Texas treating an average of 0.15 million gallons per day against a permitted design capacity of 0.5 MGD, serving about 1,389 residents. It discharges under NPDES permit TX0025968 (effective), which expires in September 2029, with 28 recorded violations in the last three years.
One treatment structure or unit process identified at City Of Wallis-Plant - 6810 Marek Street.
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See the full treatment train at City Of Wallis-Plant - 6810 Marek Street: 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.
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Wallis · 3 mi away
0.05 MGD
Orchard · 6 mi away
0.1 MGD
East Bernard · 7 mi away
0.35 MGD
Katy · 9 mi away
0.34 MGD
Fulshear · 11 mi away
0.19 MGD
Fulshear · 12 mi away
0.9 MGD
Brookshire · 13 mi away
1.42 MGD
Fulshear · 13 mi away
0.59 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 March 14, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms