Utility · TX0660003
SAN DIEGO MUD 1
SAN DIEGO MUD 1 (PWSID TX0660003) is an active community water system in Texas serving about 6,291 people through roughly 2,658 service connections. Its primary source is listed as groundwater (wells). Cities/areas associated with this system in EPA geographic data: San Diego. In recent EPA records indexed here, we found 15 violation record(s), including 5 health-based and 4 still listed as addressed/unaddressed (not fully resolved). This page summarizes public EPA SDWA/ECHO data for educational purposes. It is not a substitute for your utility’s official Consumer Confidence Report or public notices.
System facts
- PWSID: TX0660003
- Type: Community water system (active)
- Primary source: Groundwater (wells)
- Owner type: Local government
- Wholesaler flag: Yes
- Address (EPA record): 200 S DR E E DUNLAP HWY, San Diego 78384
Recent violation records (indexed subset)
Showing up to 40 recent violation identities (2021+ when dated), deduplicated from SDWA_VIOLATIONS_ENFORCEMENT. Status meanings come from EPA’s data dictionary (Resolved / Addressed / Unaddressed / Archived).
| Begin | Contaminant / issue | Violation | Category | Health-based | Status | Result / MCL |
|---|---|---|---|---|---|---|
| 12/09/2023 | Public Notice | Public Notification Violation for NPDWR Violation | Other | No | Resolved | — / MCL |
| 10/17/2024 | LEAD AND COPPER RULE REVISIONS | LSL Reporting | RPT | No | Unaddressed | — |
| 10/17/2024 | LEAD AND COPPER RULE REVISIONS | LSL Inventory | TT | Yes | Unaddressed | — |
| 10/01/2023 | Arsenic | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | .013 MG/L / MCL 0.010 mg/L |
| 09/03/2023 | Public Notice | Public Notification Violation for NPDWR Violation | Other | No | Resolved | — / MCL |
| 07/01/2025 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | Other | No | Resolved | — / MCL |
| 07/01/2022 | Chlorine | Monitoring and Reporting (DBP) | MR | No | Archived | — / MCL 4.0 mg/L |
| 06/30/2025 | Public Notice | Public Notification Violation for NPDWR Violation | Other | No | Unaddressed | — / MCL |
| 04/15/2024 | Public Notice | Public Notification Violation for NPDWR Violation | Other | No | Resolved | — / MCL |
| 04/02/2026 | Public Notice | Public Notification Violation for NPDWR Violation | Other | No | Unaddressed | — / MCL |
| 04/01/2024 | Arsenic | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | .011 MG/L / MCL 0.010 mg/L |
| 04/01/2022 | Chlorine | Monitoring and Reporting (DBP) | MR | No | Archived | — / MCL 4.0 mg/L |
| 02/01/2024 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | MON | No | Resolved | — |
| 01/01/2024 | Arsenic | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | .013 MG/L / MCL 0.010 mg/L |
| 01/01/2024 | Arsenic | Maximum Contaminant Level Violation, Average | MCL | Yes | Resolved | .011 MG/L / MCL 0.010 mg/L |
Lead & copper rule sample highlights
Codes PB90 / CU90 in SDWIS typically represent 90th percentile lead/copper monitoring results under the Lead and Copper Rule.
Lead (PB90)
- 12/31/2025: 0 mg/L
- 12/31/2022: 0 mg/L
- 12/31/2019: 0 mg/L
- 12/31/2016: 0 mg/L
- 12/31/2013: 0 mg/L
- 12/31/2010: .000436 mg/L
- 12/31/2007: 0 mg/L
- 12/31/2001: .0009 mg/L
FAQs
What does PWSID TX0660003 mean?
A Public Water System Identification number uniquely identifies a system in EPA’s Safe Drinking Water Information System (SDWIS). Texas IDs start with TX.
How current is this page?
Systems and geography reflect the EPA SDWA quarterly snapshot used for this build. Violation rows are a filtered recent subset (generally 2021+) and capped for readability—always confirm on ECHO and your CCR.
What should I do if I see a health-based violation?
Read the dates and status. Contact the utility for context, check for public notices, and review the newest Consumer Confidence Report. For medical concerns, talk with a clinician—this site is educational only.
Do lead/copper samples mean my home is safe?
LCR samples are utility monitoring results (often 90th percentile summary codes like PB90/CU90), not a test of every tap. Home plumbing can differ. Consider a certified lab test if you have reason for concern.
Citations
- EPA SDWIS via ECHO SDWA downloads: systems, geographic areas, violations/enforcement, LCR samples — SDWA Data Download Summary
- Explore the system in EPA tools using PWSID
TX0660003— ECHO home - Learn more about standards: EPA Safe Drinking Water Act