San Diego Municipal Utility District 1
EPA ID: TX0660003 · 6,291 people served · 2 ZIP codes
ZipCheckup's reading of EPA records for San Diego Municipal Utility District 1 (TX0660003): 5 violations recorded with unresolved status in the SDWIS data used. San Diego Municipal Utility District 1 has 5 EPA violations listed as open in the reviewed federal record - approximately 6,291 people fall within its service area.
Data: EPA SDWIS
Service Area Map
Coverage area for San Diego Municipal Utility District 1 Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with San Diego Municipal Utility District 1 have a median household income of $52,598 and about 8,382 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 66% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 100% 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.
💧 Where Does Your Water Come From?
San Diego Municipal Utility District 1'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
San Diego Municipal Utility District 1 (EPA ID: TX0660003) is a community water system in Texas that serves approximately 6,291 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 6 resolved, 0 archived, 0 addressed, and 5 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 2, 2026 | Public Notice | Non-health-based | Unaddressed (current) |
| July 1, 2025 | Consumer Confidence Rule | Non-health-based | Unaddressed (current) |
| June 30, 2025 | Public Notice | Non-health-based | Unaddressed (current) |
| October 17, 2024 | LEAD AND COPPER RULE REVISIONS | Health-based | Unaddressed (current) |
| October 17, 2024 | LEAD AND COPPER RULE REVISIONS | Non-health-based | Unaddressed (current) |
| April 15, 2024 | Public Notice | Non-health-based | Resolved |
| April 1, 2024 | Arsenic | Health-based | Resolved |
| February 1, 2024 | Revised Total Coliform Rule | Non-health-based | Resolved |
| January 1, 2024 | Arsenic | Health-based | Resolved |
| January 1, 2024 | Arsenic | Health-based | Resolved |
| October 1, 2023 | Arsenic | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Arsenic | MCL Violation | 4 | Yes |
| Public Notice | Other (notice or report rule) | 3 | No |
| LEAD AND COPPER RULE REVISIONS | Treatment Technique, Monitoring & Reporting | 2 | Yes |
| Consumer Confidence Rule | Other (notice or report rule) | 1 | No |
| Revised Total Coliform Rule | Monitoring & Reporting | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | 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
2 of 2 ZIP records with known zones are in EPA Radon Zone 3.
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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for San Diego Municipal Utility District 1 (TX0660003) on EPA.gov.
Frequently Asked Questions
Is San Diego Municipal Utility District 1 water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current health-based noncompliance record for San Diego Municipal Utility District 1. 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 San Diego Municipal Utility District 1 serve?
San Diego Municipal Utility District 1 serves approximately 6,291 people across 2 ZIP codes in Texas.
Where does San Diego Municipal Utility District 1 get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: No PFAS Reported Above Reporting Levels
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). San Diego Municipal Utility District 1: 5 Health Violations. https://zipcheckup.com/water-system/tx0660003/
@misc{zipcheckup-water-system-tx0660003,
author = {{ZipCheckup}},
title = {{San Diego Municipal Utility District 1: 5 Health Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/tx0660003/}
}
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
San Diego Municipal Utility District 1 (EPA ID: TX0660003) - request the latest Consumer Confidence Report or ask about specific contaminants.