450 Seitz Rd, Seguin, TX 78155 · Guadalupe County · Publicly Owned Treatment Works
Geronimo Creek Wastewater Treatment Plant is a publicly owned wastewater treatment works in Seguin, Guadalupe County, Texas treating an average of 2.64 million gallons per day against a permitted design capacity of 12 MGD, serving about 7,929 residents. It discharges under NPDES permit TX0103535 (effective), which expires in December 2030, with 4 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in July 2005.
2 treatment structures and unit processes identified at Geronimo Creek Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Geronimo Creek 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 Geronimo Creek Wastewater Treatment Plant in EPA's ICIS system.
Latest case · Jul 2005
Seguin Water Plant
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 06-2005-1345.
Full case history with a free Klarifi account
Every action against Geronimo Creek Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
7 verified contacts for Geronimo Creek Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 7 verified contacts (4 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Geronimo Creek Wastewater Treatment Plant, plus the full compliance history and discharge data.
Seguin · 3 mi away
3.68 MGD
New Braunfels · 11 mi away
3.38 MGD
Seguin · 12 mi away
—
Seguin · 12 mi away
1.62 MGD
Marion · 13 mi away
0.13 MGD
New Braunfels · 14 mi away
4.62 MGD
New Braunfels · 14 mi away
3.2 MGD
New Braunfels · 17 mi away
2.12 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 28, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms