Golden State Water Company - Tanglewood
EPA ID: CA4210021 · 1,947 people served · 2 ZIP codes
ZipCheckup's reading of EPA records for Golden State Water Company - Tanglewood (CA4210021): no drinking-water violations recorded since 2021. With no violations in its EPA file, Golden State Water Company - Tanglewood serves 1,947 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Golden State Water Company - Tanglewood Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Golden State Water Company - Tanglewood have a median household income of $96,340 and about 86,060 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.
🌊 Where Does Your Water Come From?
Golden State Water Company - Tanglewood'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.
Infrastructure Risk
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
Golden State Water Company - Tanglewood (EPA ID: CA4210021) is a community water system in California that serves approximately 1,947 people from surface water sources.
This system provides water to 2 ZIP codes across 1 community.
Violation History
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 | 2023-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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 available EPA compliance records for Golden State Water Company - Tanglewood (CA4210021) on EPA.gov.
Frequently Asked Questions
Is Golden State Water Company - Tanglewood water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Golden State Water Company - Tanglewood 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 Golden State Water Company - Tanglewood serve?
Golden State Water Company - Tanglewood serves approximately 1,947 people across 2 ZIP codes in California.
Where does Golden State Water Company - Tanglewood get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Golden State Water Company - Tanglewood Water Report, CA. https://zipcheckup.com/water-system/ca4210021/
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