Mount Zion Water Supply Corporation
EPA ID: TX1990010 · 2,028 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Mount Zion Water Supply Corporation (TX1990010): 3 unresolved EPA violations on record. Looking at the EPA enforcement file for Mount Zion Water Supply Corporation, 3 violations are listed as unresolved - those findings cover the utility's service area of approximately 2,028 people and remain open in the federal compliance system, awaiting formal corrective action documentation.
Data: EPA SDWIS
Service Area Map
Coverage area for Mount Zion Water Supply Corporation Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Mount Zion Water Supply Corporation serves a community with a median household income of $128,590 and an estimated 41,786 residents across its service area.
🌊 Where Does Your Water Come From?
Mount Zion 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.
Infrastructure Risk
Detected Contaminants
How Mount Zion Water Supply Corporation compares to EPA limits
What This Means For You
Stage 2 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Lead and Copper Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 4 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
Mount Zion Water Supply Corporation (EPA ID: TX1990010) is a community water system in Texas that serves approximately 2,028 people from surface water sources.
This system serves ZIP code 75087 in Rockwall.
Violation History
Status breakdown for accepted records with record years 2021-2026: 2 resolved, 0 archived, 0 addressed, and 3 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| April 16, 2026 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| December 30, 2025 | Stage 1 DBP Rule | Non-health-based | Unaddressed (current) |
| May 15, 2025 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Lead and Copper Rule | Treatment Failure | 2 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by TX or modeled from parcel and building-footprint data.
- 75087 - Rockwall
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Mount Zion Water Supply Corporation (TX1990010) on EPA.gov.
Frequently Asked Questions
Is Mount Zion Water Supply Corporation water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 3 current noncompliance records and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Mount Zion Water Supply Corporation serve?
Mount Zion Water Supply Corporation serves approximately 2,028 people across 1 ZIP code in Texas.
Where does Mount Zion Water Supply Corporation get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Mount Zion Water Supply Corporation (TX): 1 Health Violation. https://zipcheckup.com/water-system/tx1990010/
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author = {{ZipCheckup}},
title = {{Mount Zion Water Supply Corporation (TX): 1 Health Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/tx1990010/}
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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
Mount Zion Water Supply Corporation (EPA ID: TX1990010) - request the latest Consumer Confidence Report or ask about specific contaminants.