City of Mason
EPA ID: TX1600001 ยท 2,228 people served ยท 1 ZIP code
ZipCheckup's reading of EPA records for City of Mason (TX1600001): 3 violations recorded with unresolved status in the SDWIS data used. In the federal compliance data used here, City of Mason has 3 violations listed as open; the utility serves approximately 2,228 people.
Data: EPA SDWIS
Service Area Map
Coverage area for City of Mason Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with City of Mason have a median household income of $75,048 and about 3,525 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 67% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 50% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
๐ง Where Does Your Water Come From?
City of Mason's water is classified in EPA records as a groundwater source. 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.
Infrastructure Risk
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
City of Mason (EPA ID: TX1600001) is a community water system in Texas that serves approximately 2,228 people from groundwater sources.
This system serves ZIP code 76856 in Mason.
Violation History
Status breakdown for accepted records with record years 2021-2026: 13 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 11, 2026 | Revised Total Coliform Rule | Health-based | Unaddressed (current) |
| February 12, 2026 | E. COLI | Non-health-based | Unaddressed (current) |
| December 30, 2025 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| July 1, 2025 | Consumer Confidence Rule | Non-health-based | Resolved |
| November 27, 2024 | E. COLI | Non-health-based | Resolved |
| October 1, 2022 | Gross Alpha | Health-based | Resolved |
| July 1, 2022 | Lead and Copper Rule | Non-health-based | Resolved |
| April 1, 2022 | Gross Alpha | Health-based | Resolved |
| January 1, 2022 | Gross Alpha | Health-based | Resolved |
| October 1, 2021 | Combined Radium (-226 and -228) | Health-based | Resolved |
| July 1, 2021 | Combined Radium (-226 and -228) | Health-based | Resolved |
| July 1, 2021 | Gross Alpha | Health-based | Resolved |
| April 1, 2021 | Combined Radium (-226 and -228) | Health-based | Resolved |
| April 1, 2021 | Gross Alpha | Health-based | Resolved |
| January 1, 2021 | Combined Radium (-226 and -228) | Health-based | Resolved |
| January 1, 2021 | Gross Alpha | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Gross Alpha | MCL Violation | 6 | Yes |
| Combined Radium (-226 and -228) | MCL Violation | 4 | Yes |
| E. COLI | Monitoring & Reporting | 2 | No |
| Lead and Copper Rule | Monitoring & Reporting | 2 | No |
| Consumer Confidence Rule | Other (notice or report rule) | 1 | No |
| Revised Total Coliform Rule | Treatment Technique | 1 | Yes |
Health Risk Details
Gross Alpha Particle Activity (EPA limit: pCi/L)
Increased cancer risk from radioactive particles At-risk groups: long-term residents in areas with uranium or radium-rich geology, people on private wells in western US.
Treatment options (verify a product is certified to reduce this contaminant): reverse osmosis, ion exchange, lime softening. Find the right filter โ
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0015 mg/L | No | 2025-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
1 of 1 ZIP records with known zones is in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
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.
- 76856 - Mason
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of Mason (TX1600001) on EPA.gov.
Frequently Asked Questions
Is City of Mason water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current health-based noncompliance record for City of Mason. Review the utility's current notices and EPA record. This system-level compliance history cannot determine conditions at a specific tap.
How many people does City of Mason serve?
City of Mason serves approximately 2,228 people across 1 ZIP code in Texas.
Where does City of Mason get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). City of Mason (TX): 11 Health Violations. https://zipcheckup.com/water-system/tx1600001/
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author = {{ZipCheckup}},
title = {{City of Mason (TX): 11 Health Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/tx1600001/}
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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 โ
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report โ
Contact your utility
City of Mason (EPA ID: TX1600001) - request the latest Consumer Confidence Report or ask about specific contaminants.