Compliance figures for Jericho indicate average water quality in NY overall — some service areas have recorded health-based violations in recent monitoring cycles, while others operate cleanly, making system-level data the most actionable reference point for residents.

Data: EPA SDWIS Last verified: 2026-06-03

Overview

We track water quality and home safety data for 2 ZIP codes in Jericho, New York (population ~12,729), covering 3 community water systems serving approximately 110,700 people region-wide.

No EPA violations recorded across any ZIP codes in Jericho — an excellent indicator of water quality.

Home Safety Score

Average Home Safety Score for Jericho: C (66/100)

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

Jericho water systems draw from: Groundwater.

Lead & Copper

• Lead data: not yet available for Jericho
• 0 ZIP codes exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 3 (Low Risk)

• Zone 1 (High): 0 ZIP codes
• Zone 2 (Moderate): 0 ZIP codes
• Zone 3 (Low): 2 ZIP codes

Areas with No Violations

All ZIP Codes in Jericho

• 11753 [C]
• 11853 [C]

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.

Jericho: Remediation Cost in Perspective

Equity impact data for Jericho lands in the favorable tier — remediation claims a small slice of what properties here are worth.

Median Home Value

$950,100

Est. Remediation

$1,200

Remediation as % of home value 0.1%

Remediation costs in Jericho are relatively low compared to home values. The $800–$1,800 estimated range is a small fraction of median property value. Home values are 162% above the New York average.

Climate-Related Water Risk for Jericho

Across the NFIP's long tracking period, Jericho shows 43 claims and 50% of ZIP codes within FEMA-designated flood zones — figures that place it in moderate flood exposure territory. At this level, the water-quality implications of flooding — contaminated wells, stressed treatment intake, distribution backflow — move from theoretical edge cases to genuine periodic risks, particularly during higher-severity events.

43

Total FEMA Flood Claims

$3,594

Avg Claim Payout

50%

ZIPs in FEMA Flood Zones

~2

Est. Claims/Year

Jericho has a moderate flood history with 43 FEMA claims averaging $3,594 per payout. 50% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.

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. Flood damage can add significantly to the estimated <strong>$1,200</strong> remediation cost per household.

Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.

Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.