Oakwood Lake Water District-subdivision
EPA ID: CA3910023 · 1,479 people served · 2 ZIP codes
ZipCheckup's reading of EPA SDWIS for Oakwood Lake Water District-subdivision (CA3910023): no EPA violations recorded in the last five years. Compared to the national average for mid-size utilities, Oakwood Lake Water District-subdivision sits well above the baseline - five years of EPA monitoring show no violations, no MCL exceedances, and no enforcement actions for the full service territory of 1,479 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Oakwood Lake Water District-subdivision Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Oakwood Lake Water District-subdivision serves a community with a median household income of $114,297 and an estimated 79,172 residents across its service area.
Environmental Justice Note: 55% 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?
Oakwood Lake Water District-subdivision'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.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 7 detections recorded. 3 exceed federal EPA limits (4 ppt for PFOA/PFOS). 2 exceed state limits.
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
Oakwood Lake Water District-subdivision (EPA ID: CA3910023) is a community water system in California that serves approximately 1,479 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
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.
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 CA 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 Oakwood Lake Water District-subdivision (CA3910023) on EPA.gov.
Frequently Asked Questions
Is Oakwood Lake Water District-subdivision water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Oakwood Lake Water District-subdivision in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Oakwood Lake Water District-subdivision serve?
Oakwood Lake Water District-subdivision serves approximately 1,479 people across 2 ZIP codes in California.
Where does Oakwood Lake Water District-subdivision get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Oakwood Lake Water District-subdivision Water Report, CA. https://zipcheckup.com/water-system/ca3910023/
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title = {{Oakwood Lake Water District-subdivision Water Report, CA}},
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url = {https://zipcheckup.com/water-system/ca3910023/}
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