Stony Brook, NY: High Radon Risk - Home Safety 83/100
2 ZIP codes · 1 water system · Updated
ZipCheckup grade for Stony Brook: B.
This ZIP looks solid, with a few items worth a quick check.
In current tracking cycles, Stony Brook records above-average water quality outcomes for NY; compliance history over recent years shows few departures from federal standards and no systemic failures across its water systems.
How Stony Brook Compares
Data: EPA SDWIS
Key Facts for Stony Brook Residents
- Average lead level: 0.0013 mg/L.
- Estimated remediation: $2,400 per household.
- CDC health risk index: 11.13.
Stony Brook's Water Providers
Federal drinking water records identify 1 system operating in Stony Brook, NY. One of those systems serves the overwhelming majority of residential addresses, concentrating infrastructure management, rate authority, and EPA compliance reporting within a single organization.
- B
Overview
We track home safety data for 2 ZIP codes in Stony Brook, New York (population ~21,453), covering 1 community water system serving approximately 1,100,000 people region-wide. The EPA snapshots used for this build directly map water systems to 2 of 2 ZIP codes.
The available EPA record reports 0 violations for 2 ZIP codes with a reported violation count.
Home Safety Score
Average Home Safety Score for Stony Brook: B (83/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Stony Brook water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0013 mg/L (EPA action level: 0.015 mg/L)
- 0 of 2 ZIP codes with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 2 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 11790 | B | Suffolk County Water Authority | 1,100,000 |
| 11794 | — | Suffolk County Water Authority | 1,100,000 |
All ZIP Codes in Stony Brook
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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Stony Brook 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
How Remediation Costs Compare in Stony Brook
In Stony Brook, property wealth outpaces what documented remediation typically demands - the equity burden lands well within the low tier.
Remediation costs in Stony Brook are relatively low compared to home values. The $1,600–$3,150 estimated range is a small fraction of median property value. Home values are 63% above the New York average.
Stony Brook: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Stony Brook appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Stony Brook: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Stony Brook contains 49 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $30,263. Among ZIP codes with claim records, 0% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The <strong>$2,400</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Stony Brook, NY