Glenwood Landing, NY Water Safety: 95/100 (2026)
1 ZIP code · 4 water systems · Updated 2026-06-03
In current tracking cycles, Glenwood Landing 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 Glenwood Landing Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Glenwood Landing Water
- Average lead level: 0.0013 mg/L.
- Homes built before 1986: 84% — older plumbing may contain lead solder.
- Estimated remediation: $1,800 per household.
- CDC health risk index: 10.69.
Who Supplies Your Water in Glenwood Landing
Throughout Glenwood Landing, NY, water comes from one of 3 primary utilities out of 4 total systems — independent providers with different rate structures, infrastructure, and compliance records that vary across the service territory.
Overview
We track water quality and home safety data for 1 ZIP code in Glenwood Landing, New York (population ~788), covering 4 community water systems serving approximately 89,400 people region-wide.
No EPA violations recorded across any ZIP codes in Glenwood Landing — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Glenwood Landing: A (95/100)
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
Glenwood Landing water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0013 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 11547 | A | JERICHO WD | 58,000 |
All ZIP Codes in Glenwood Landing
- 11547 [A]
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.
Health Outcomes in Glenwood Landing
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
Housing & Infrastructure in Glenwood Landing
With 84% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Pre-1986 plumbing is not a rare legacy case in Glenwood Landing — it's the dominant profile. The median build year of 1956 indicates a housing stock where lead-soldered copper joints are a common structural feature of residences across the city.
Over half of homes in Glenwood Landing were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Glenwood Landing Homeowners
Equity impact data for Glenwood Landing lands in the favorable tier — remediation claims a small slice of what properties here are worth.
Remediation costs in Glenwood Landing are relatively low compared to home values. The $1,200–$2,500 estimated range is a small fraction of median property value. Home values are 153% above the New York average.
Lead Exposure Risk for Children in Glenwood Landing
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.
In recent monitoring under the Lead and Copper Rule, citywide samples for Glenwood Landing have approached or crossed the regulatory action level on multiple occasions. Combined with 84% of stock dating from the pre-rule era, the picture supports baseline single-tap reads as a standard household-level step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Glenwood Landing
2 FEMA flood insurance claims are on file for Glenwood Landing, and 100% of local ZIP codes fall within federally designated flood zones — enough to put flood exposure on the planning radar, though short of the concentrated-risk threshold where treatment-system vulnerability becomes a primary consideration.
Glenwood Landing has a moderate flood history with 2 FEMA claims averaging $38,611 per payout. 100% 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>$1,800</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.
Deep Dive Reports
Detailed analysis for Glenwood Landing, NY