Hidden Harbor Marina & Rvp
EPA ID: CA5200526 · 70 people served · 5 ZIP codes
Although compliance varies widely among water utilities nationally, Hidden Harbor Marina & Rvp stands out with zero EPA violations over five consecutive monitoring years, delivering safe tap water to 70 residents and showing no enforcement activity across the entire reporting span.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Hidden Harbor Marina & Rvp Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Hidden Harbor Marina & Rvp serves a community with a median household income of $185,080 and an estimated 228,520 residents across its service area. Approximately 68% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Hidden Harbor Marina & Rvp'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.
About 1% of homes in Alameda County, California rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
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
Hidden Harbor Marina & Rvp (EPA ID: CA5200526) is a community water system in California that serves approximately 70 people from groundwater sources.
This system provides water to 5 ZIP codes across 1 community.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Hidden Harbor Marina & Rvp (CA5200526) on EPA.gov.
Frequently Asked Questions
Is Hidden Harbor Marina & Rvp water safe to drink?
Based on EPA records, Hidden Harbor Marina & Rvp has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Hidden Harbor Marina & Rvp serve?
Hidden Harbor Marina & Rvp serves approximately 70 people across 5 ZIP codes in California.
Where does Hidden Harbor Marina & Rvp get its water?
The primary water source is groundwater.