Maryknoll, NY: High Radon Risk — 40/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Compared to NY averages, Maryknoll scores below the baseline — health violations appear more frequently than the norm and the city's grade reflects that ongoing shortfall.
How Maryknoll Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Maryknoll Residents
- Estimated remediation: $1,200 per household.
- CDC health risk index: 10.47.
Maryknoll's Water Providers
In Maryknoll, NY, residential water supply is distributed across multiple utilities rather than concentrated in one. The 2 leading providers out of 2 tracked systems each control their own infrastructure, file separate EPA compliance reports, and set independent rate schedules.
Overview
We track water quality and home safety data for 1 ZIP code in Maryknoll, New York (population ~182), covering 2 community water systems serving approximately 89,559 people region-wide.
No EPA violations recorded across any ZIP codes in Maryknoll — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Maryknoll: D (40/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Maryknoll water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Maryknoll
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 10545 | D | Ossining Water Department | 30,000 |
All ZIP Codes in Maryknoll
- 10545 [D]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Maryknoll Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What You Can Do in Maryknoll
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Maryknoll, NY