CITY REPORT NY HEALTH VIOLATIONS: 1

Syosset, NY: 1 Health Violation - Home Safety 99/100

2 ZIP codes · 5 water systems · Updated

ZipCheckup grade for Syosset: A.

Checked records flag no major concern; missing data is unknown.

Based on available records, Syosset, NY holds an A or B ZipCheckup grade.

How Syosset Compares

Syosset99/100
New York avg84/100
National avg73/100

Data: EPA SDWIS

2
ZIP Codes
5
Water Systems
1
ZIPs Linked to Systems with Violations
A · 99
Avg Safety Score
Zone 3
County Radon Potential (Low)
$919K
Median Home Value
$800
Est. Remediation (0.1% of home value)

Syosset Water: The Quick Version

  • Water systems mapped to your city have 1 violation on record since 2021.
  • Average of reported 90th-percentile lead results: 0.0057 mg/L.
  • Estimated remediation: $800 per household.
  • Health risk index (ZipCheckup composite of CDC data): 10.69.

Water Systems Serving Syosset

Service in Syosset, NY can differ by address: 5 water systems are tied to the area in federal records, and the 3 largest are listed with their violation records.

Overview

We track home safety data for 2 ZIP codes in Syosset, New York (population ~25,194), covering 5 community water systems serving approximately 148,980 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 2 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 1 health-based violation appear in the available health breakdown.

Home Safety Score

Average Home Safety Score for Syosset: A (99/100)

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

Syosset water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0057 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

2 of 2 ZIP records with known zones are in EPA Radon Zone 3.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Lead and Copper Rule Treatment Technique 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
11791 A 1 1 Jericho Water District

All ZIP Codes in Syosset

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

CDC Health Data for Syosset

9.6%
Asthma (US: 9.8%)
10.1%
Diabetes (US: 10.4%)
13.2%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 9.6% ↓
Diabetes 10.1% ↓
Mental Health 13.2% ↓

Vertical line = national average. ■ Above national · ■ Below national

Key Contaminants Detected in Syosset

Lead and Copper Rule 2 violations
Treatment Technique
Developmental delays in children, kidney damage

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

Syosset: Remediation Cost in Perspective

Because the median home value in Syosset is large relative to the estimated cost of remediation, the ratio between them stays at or below 1%; that is a statement about two area-level numbers, not a quote for a particular house or a judgment about what an owner can pay.

Median Home Value
$918,900
Est. Remediation
$800
Remediation as % of home value 0.1%

Estimated remediation costs in Syosset can be compared with local home values. The $450–$1,400 estimated range can be set against the median property value; actual costs vary by home. Home values are 154% above the New York average.

Protecting Children from Lead in Syosset

0.0057
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

Available area-level lead records for Syosset do not determine the lead level at an individual tap. 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.

Historical Flood-Claim Evidence for Syosset

34
Total FEMA Flood Claims
$2,453
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Syosset contains 34 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $2,453. 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 $800 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.

Frequently Asked Questions

What does the Home Safety Score mean for Syosset, NY?
Syosset has an average Home Safety Score of 99/100 (Grade A) under ZipCheckup model 4.0.0, an area-level model that draws on EPA water compliance records, PFAS screening, EPA radon zones, and annual EPA air quality data; see the methodology page for how inputs and coverage are handled. 1 violation appears in EPA records for water systems mapped to these ZIP codes. Check individual ZIP code reports for component details.
How many violations are on record for water systems serving Syosset?
EPA records list 1 EPA violation, including 1 health-based violation for Syosset water systems. These water-system violations are shown for 2 mapped ZIP codes.
Does Syosset water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Syosset is 0.0057 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How does Syosset compare to New York average?
Syosset has an average Home Safety Score of 99/100, which is at or above the New York state average of 84/100 for the same model series.
How many water systems serve Syosset?
Our records map 5 water systems to 2 ZIP codes in Syosset. The related population figure in our data is approximately 25,194 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Syosset?
Estimated remediation cost per household in Syosset: $800; modeled range $450 to $1,400. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
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How to cite this page

APA ZipCheckup. (2026). Syosset, NY: 1 Health Violation - Home Safety 99/100. https://zipcheckup.com/cities/ny/syosset/
BibTeX
@misc{zipcheckup-cities-ny-syosset,
  author = {{ZipCheckup}},
  title  = {{Syosset, NY: 1 Health Violation - Home Safety 99/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/ny/syosset/}
}

Page version: October 2026.

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