Matagorda Water Supply Corporation
EPA ID: TX1610013 · 1,746 people served · 1 ZIP code
Tallying the federal enforcement file for Matagorda Water Supply Corporation yields 17 open violations that have not been formally closed — each finding sits in the EPA database while the utility continues to deliver water to approximately 1,746 residents and works through the required corrective action process.
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 7 (2024) to 8 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Matagorda Water Supply Corporation Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
💧 Where Does Your Water Come From?
Matagorda Water Supply Corporation's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 1% of homes in Matagorda 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
Detected Contaminants
How Matagorda Water Supply Corporation compares to EPA limits
What This Means For You
Total Trihalomethanes (TTHM) at 17 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Haloacetic Acids (HAA5) at 2 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Lead and Copper Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Total Trihalomethanes (TTHM) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →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
Matagorda Water Supply Corporation (EPA ID: TX1610013) is a community water system in Texas that serves approximately 1,746 people from groundwater sources.
This system serves ZIP code 77457 in Matagorda.
Average Home Safety Score: C (55/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| April 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| January 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| October 1, 2024 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| July 1, 2024 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| April 1, 2024 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| January 1, 2024 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| October 1, 2023 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| July 1, 2023 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| April 1, 2023 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| January 1, 2023 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 17 | Yes |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | Yes |
| Lead and Copper Rule | Treatment Failure | 1 | No |
Health Risk Details
Total Trihalomethanes (TTHM) (EPA limit: 0.08 mg/L)
Bladder & rectal cancer risk; reproductive concerns At-risk groups: pregnant women, long-term consumers of chlorinated water, people who frequently shower in chlorinated water.
Removal methods: granular activated carbon (GAC), carbon block filter, point-of-entry aeration. Find the right filter →
Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)
Cancer risk; reproductive & developmental effects At-risk groups: pregnant women, infants, long-term consumers of chlorinated municipal water.
Removal methods: granular activated carbon (GAC), carbon block filter, reverse osmosis. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 77457 | 0.0025 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
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
- 77457 — Matagorda
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Matagorda Water Supply Corporation (TX1610013) on EPA.gov.
Frequently Asked Questions
Is Matagorda Water Supply Corporation water safe to drink?
Matagorda Water Supply Corporation has recorded 18 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Matagorda Water Supply Corporation serve?
Matagorda Water Supply Corporation serves approximately 1,746 people across 1 ZIP code in Texas.
Where does Matagorda Water Supply Corporation get its water?
The primary water source is groundwater.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Matagorda Water Supply Corporation (EPA ID: TX1610013) — request the latest Consumer Confidence Report or ask about specific contaminants.