San Diego Municipal Utility District 1
EPA ID: TX0660003 · 6,291 people served · 2 ZIP codes
ZipCheckup's reading of EPA SDWIS for San Diego Municipal Utility District 1 (TX0660003): 5 unresolved EPA violations on record. The EPA enforcement database lists 5 active violations for San Diego Municipal Utility District 1 - a provider that delivers drinking water to approximately 6,291 people and has not yet formally resolved those findings.
Data: EPA SDWIS
Service Area Map
Coverage area for San Diego Municipal Utility District 1 Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The San Diego Municipal Utility District 1 serves a community with a median household income of $52,598 and an estimated 8,382 residents across its service area. Approximately 66% 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?
San Diego Municipal Utility District 1'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.
Infrastructure Risk
Detected Contaminants
How San Diego Municipal Utility District 1 compares to EPA limits
What This Means For You
Lead and Copper Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Barium at 4 mg/L exceeds the EPA maximum of 2 mg/L.
Stage 2 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 1 mg/L exceeds the EPA maximum of mg/L.
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 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| July 1, 2025 | Surface Water Treatment Rule | Non-health-based | Unaddressed (current) |
| June 30, 2025 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unaddressed (current) |
| October 17, 2024 | Stage 2 DBP Rule | Non-health-based | Unaddressed (current) |
| April 15, 2024 | Lead and Copper Rule | Non-health-based | Resolved |
| April 1, 2024 | Barium | Health-based | Resolved |
| February 1, 2024 | Consumer Confidence Report Rule | Non-health-based | Resolved |
| January 1, 2024 | Barium | Health-based | Resolved |
| January 1, 2024 | Barium | Health-based | Resolved |
| October 1, 2023 | Barium | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Barium | Inorganic | 4 | Yes |
| Lead and Copper Rule | Treatment Failure | 3 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
| Consumer Confidence Report Rule | Reporting 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.
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
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 the full compliance record 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: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
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/
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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
San Diego Municipal Utility District 1 (EPA ID: TX0660003) - request the latest Consumer Confidence Report or ask about specific contaminants.