527 Ransom Island Rd, Aransas Pass, TX 78336 · San Patricio County · Publicly Owned Treatment Works
Aransas Pass WWTP is a publicly owned wastewater treatment works in Aransas Pass, San Patricio County, Texas treating an average of 1.45 million gallons per day against a permitted design capacity of 1.6 MGD, serving about 9,607 residents. It discharges under NPDES permit TX0025682 (effective), which expires in September 2029, with 39 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in May 2020.
2 treatment structures and unit processes identified at Aransas Pass WWTP.
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See the full treatment train at Aransas Pass WWTP: 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 Aransas Pass WWTP in EPA's ICIS system.
Latest case · May 2020
City of Aransas Pass
Administrative order · CWA, NPDES Permit Violations · Unilateral Administrative Order Without Adjudication · Compliance actions $10,000
EPA's description of the case:
“The Aransas Pass order was issued for permit violations. A corrective action plan is required.”
Source: EPA ECHO, civil enforcement case 06-2019-1812.
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Every action against Aransas Pass WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Decision-makers at Aransas Pass WWTP.
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Ingleside · 4 mi away
1.2 MGD
Port Aransas · 6 mi away
1.6 MGD
Gregory · 10 mi away
0.26 MGD
Rockport · 12 mi away
1.76 MGD
Taft · 15 mi away
0.51 MGD
Bayside · 15 mi away
0.0041 MGD
Corpus Christi · 17 mi away
2.28 MGD
Corpus Christi · 17 mi away
4.83 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 May 29, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms