Mount Fuji
EPA ID: NY4320531 · 282 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Mount Fuji (NY4320531): no EPA violations recorded in the last five years. Zero violations in five consecutive years of EPA monitoring - Mount Fuji has held a clean track record across every reporting cycle in that span, with no enforcement activity of any kind on file for the full service population of 282 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Mount Fuji Source: EPA SDWIS service area boundaries.
Service area boundary - Grade B
Service Area Demographics
The Mount Fuji serves a community with a median household income of $81,406 and an estimated 1,170 residents across its service area. Approximately 86% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Mount Fuji'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 60th 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. 10 detections recorded. 2 exceed federal EPA limits (4 ppt for PFOA/PFOS). 1 exceeds state limits.
Comparable Water Systems
Similar-sized systems in New York
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
Mount Fuji (EPA ID: NY4320531) is a community water system in New York that serves approximately 282 people from groundwater sources.
This system serves ZIP code 10931 in Hillburn.
ZIP-Area Home Safety Context: B (83/100)
This is the average Home Safety Score for 1 of 1 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
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0021 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.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
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 NY or modeled from parcel and building-footprint data.
- 10931 - Hillburn
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Mount Fuji (NY4320531) on EPA.gov.
Frequently Asked Questions
Is Mount Fuji water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Mount Fuji 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 Mount Fuji serve?
Mount Fuji serves approximately 282 people across 1 ZIP code in New York.
Where does Mount Fuji get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Mount Fuji Water Quality Report, NY. https://zipcheckup.com/water-system/ny4320531/
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title = {{Mount Fuji Water Quality Report, NY}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ny4320531/}
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