South Garza Water Supply Corporation
EPA ID: TX0850014 · 216 people served · 1 ZIP code
Five years of EPA monitoring have produced no violations for South Garza Water Supply Corporation — the supplier serving 216 residents has kept every contaminant level within federal limits, a result that places it among the top-performing utilities for systems with a service population of comparable size.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 1 (2023) to 1 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for South Garza Water Supply Corporation Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The South Garza Water Supply Corporation serves a community with a median household income of $48,466 and an estimated 5,362 residents across its service area. Approximately 70% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 100% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
South Garza Water Supply Corporation's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 4% of homes in Garza County, Texas rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 2 detections recorded.
Comparable Water Systems
Similar-sized systems in Texas
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
South Garza Water Supply Corporation (EPA ID: TX0850014) is a community water system in Texas that serves approximately 216 people from surface water sources.
This system serves ZIP code 79356 in Post.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
- 79356 — Post
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for South Garza Water Supply Corporation (TX0850014) on EPA.gov.
Frequently Asked Questions
Is South Garza Water Supply Corporation water safe to drink?
Based on EPA records, South Garza Water Supply Corporation has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does South Garza Water Supply Corporation serve?
South Garza Water Supply Corporation serves approximately 216 people across 1 ZIP code in Texas.
Where does South Garza Water Supply Corporation get its water?
The primary water source is surface water.