Chateau Ridge
EPA ID: NY3905685 · 440 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Chateau Ridge (NY3905685): no EPA violations recorded in the last five years. From the earliest to the most recent cycle in the five-year EPA window, Chateau Ridge has logged zero violations - no MCL exceedances, no health advisories, and no enforcement activity across the entire period for the 440 people in its service area, a record that stands up well against both state and national benchmarks.
Data: EPA SDWIS
Service Area Map
Coverage area for Chateau Ridge Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Chateau Ridge serves a community with a median household income of $133,929 and an estimated 26,137 residents across its service area. Approximately 81% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Chateau Ridge'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
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
Chateau Ridge (EPA ID: NY3905685) is a community water system in New York that serves approximately 440 people from groundwater sources.
This system serves ZIP code 10541 in Mahopac.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.015 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 NY or modeled from parcel and building-footprint data.
- 10541 - Mahopac
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Chateau Ridge (NY3905685) on EPA.gov.
Frequently Asked Questions
Is Chateau Ridge water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Chateau Ridge 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 Chateau Ridge serve?
Chateau Ridge serves approximately 440 people across 1 ZIP code in New York.
Where does Chateau Ridge get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Chateau Ridge Water Quality Report, NY. https://zipcheckup.com/water-system/ny3905685/
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author = {{ZipCheckup}},
title = {{Chateau Ridge Water Quality Report, NY}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ny3905685/}
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