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Geronimo Creek Wastewater Treatment Plant

450 Seitz Rd, Seguin, TX 78155 · Guadalupe County · Publicly Owned Treatment Works

Average flow
2.64 MGD
Design flow
12 MGD
NPDES permit
TX0103535
Effective
Permit expires
December 2030
Population served
7,929
CWNS 2022

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.

Treatment technology

2 treatment structures and unit processes identified at Geronimo Creek Wastewater Treatment Plant.

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See the full treatment train at Geronimo Creek Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations
4
Effluent violations
4

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 Geronimo Creek Wastewater Treatment Plant in EPA's ICIS system.

Formal actions
1
0 since FY2020
Compliance actions
$1,000
required by EPA orders
EPA inspections
0
none on record

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.

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Every action against Geronimo Creek Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.

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Key contacts

7 verified contacts for Geronimo Creek Wastewater Treatment Plant, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Geronimo Creek Wastewater Treatment Plant, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Texas

Walnut Branch WWTP

Seguin · 3 mi away

3.68 MGD

3.38 MGD

Santa Clara Creek 1 WWTP

Seguin · 12 mi away

—

Dunlap WWTF

Seguin · 12 mi away

1.62 MGD

Marion WWTP

Marion · 13 mi away

0.13 MGD

South Kuehler WWTF

New Braunfels · 14 mi away

4.62 MGD

North Kuehler WWTP

New Braunfels · 14 mi away

3.2 MGD

Gruene Road Water Reclamation Facility

New Braunfels · 17 mi away

2.12 MGD

Geronimo Creek Wastewater Treatment Plant: 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 28, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms


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