Central Islip, NY Water Safety: 65/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
The systems supplying Central Islip vary in performance across NY benchmarks — most meet minimum federal standards, but documented violations in select areas are on record.
How Central Islip Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Central Islip Water
- Homes built before 1986: 75% — older plumbing may contain lead solder.
- Estimated remediation: $1,800 per household.
- CDC health risk index: 11.13.
Who Supplies Your Water in Central Islip
Because residential water in Central Islip, NY flows primarily through a single utility, infrastructure decisions, rate-setting, and EPA compliance are all managed within one organizational structure. Federal records show 1 system active in the area, but one provider dominates the service landscape for most homes and apartments.
Overview
We track water quality and home safety data for 1 ZIP code in Central Islip, New York (population ~38,443), covering 1 community water system serving approximately 1,100,000 people region-wide.
No EPA violations recorded across any ZIP codes in Central Islip — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Central Islip: C (65/100)
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
Central Islip water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Central Islip
- 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 |
|---|---|---|---|
| 11722 | C | SUFFOLK COUNTY WATER AUTHORITY | 1,100,000 |
All ZIP Codes in Central Islip
- 11722 [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.
Health Outcomes in Central Islip
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 Central Islip
With 75% 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
Because the majority of Central Islip's housing predates 1986, when lead solder was banned from new plumbing, the median build year of 1961 reflects a city where lead-era plumbing materials are common rather than exceptional.
Over half of homes in Central Islip 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 Central Islip Homeowners
Equity impact data for Central Islip lands in the favorable tier — remediation claims a small slice of what properties here are worth.
Remediation costs in Central Islip are relatively low compared to home values. The $1,200–$2,600 estimated range is a small fraction of median property value. Home values are 12% above the New York average.
Lead Exposure Risk for Children in Central Islip
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.
Routinely in Central Islip, where 75% of housing predates the solder ban and aggregate utility readings hover near the federal threshold, a faucet-level draw functions as a standard household step for families with small kids.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Central Islip
Measured across the NFIP's multi-decade tracking period, Central Islip shows a moderate flood record — 41 claims and 100% of ZIP codes carrying FEMA flood zone status. For water quality, that combination matters because flood events at this frequency can periodically stress infrastructure: treatment plants, private wells, and distribution systems all face elevated risk during significant flooding.
Central Islip has a moderate flood history with 41 FEMA claims averaging $3,026 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.
What You Can Do in Central Islip
- 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. With 75% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Central Islip, NY