Santa Margarita Water District-id9
EPA ID: CA3010030 · 39,684 people served · 9 ZIP codes
ZipCheckup's reading of EPA records for Santa Margarita Water District-id9 (CA3010030): 1 violation on record since 2021. Past violations at Santa Margarita Water District-id9 total 1, all marked resolved; it supplies 39,684 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Santa Margarita Water District-id9 Source: EPA SDWIS service area boundaries.
Service area boundary - average Home Safety grade of mapped ZIPs: A
Demographics of ZIP Codes Served
The ZIP codes associated with Santa Margarita Water District-id9 have a median household income of $133,028 and about 327,407 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 56% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Santa Margarita Water District-id9'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.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 4 detections recorded.
Comparable Water Systems
Similar-sized systems in California
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
Santa Margarita Water District-id9 (EPA ID: CA3010030) is a community water system in California that serves approximately 39,684 people from surface water sources.
This system provides water to 9 ZIP codes across 7 communities.
ZIP-Area Home Safety Context: A (91/100)
This is the average Home Safety Score for 1 of 9 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 0 archived, 0 addressed, and 0 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 |
|---|---|---|---|
| October 1, 2022 | TTHM | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| TTHM | 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 | 2024-12-31 |
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
9 of 9 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 CA or modeled from parcel and building-footprint data.
- 92624 - Capistrano Beach
- 92629 - Dana Point
- 92672 - San Clemente
- 92673 - San Clemente
- 92675 - San Juan Capistrano
- 92677 - Laguna Niguel
- 92691 - Mission Viejo
- 92692 - Mission Viejo
- 92694 - Ladera Ranch
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Santa Margarita Water District-id9 (CA3010030) on EPA.gov.
Frequently Asked Questions
Is Santa Margarita Water District-id9 water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Santa Margarita Water District-id9; its 1 accepted 2021-2026 record are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Santa Margarita Water District-id9 serve?
Santa Margarita Water District-id9 serves approximately 39,684 people across 9 ZIP codes in California.
Where does Santa Margarita Water District-id9 get its water?
The primary water source is surface water.
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.). Santa Margarita Water District-id9 (CA): 1 EPA Violation. https://zipcheckup.com/water-system/ca3010030/
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title = {{Santa Margarita Water District-id9 (CA): 1 EPA Violation}},
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url = {https://zipcheckup.com/water-system/ca3010030/}
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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
Santa Margarita Water District-id9 (EPA ID: CA3010030) - request the latest Consumer Confidence Report or ask about specific contaminants.