Katonah, NY: 13 Violations - Home Safety 80/100
1 ZIP code · 5 water systems · Updated
ZipCheckup grade for Katonah: B.
This ZIP has a few items worth a quick check.
In ZipCheckup's scoring, Katonah, NY lands in the A-B grade tier.
How Katonah Compares
Data: EPA SDWIS
Key Facts for Katonah Residents
- Your city's water systems recorded 13 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0106 mg/L.
- Homes built before 1986: 79% - older plumbing may contain lead solder.
- Estimated remediation: $500 per household.
- Health risk index (ZipCheckup composite of CDC data): 10.47.
Katonah's Water Providers
3 systems shown for Katonah, NY, from 5 on the federal list.
- B
- B
- B
Overview
We track home safety data for 1 ZIP code in Katonah, New York, covering 5 community water systems serving approximately 11,010 people. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.
Home Safety Score
Average Home Safety Score for Katonah: B (80/100)
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
Katonah water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0106 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
1 of 1 ZIP records with known zones is 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 |
|---|---|---|---|
| Revised Total Coliform Rule | Microbiological | 8 | 1 |
| Lead and Copper Rule | Treatment Technique | 4 | 1 |
| Consumer Confidence Rule | Reporting | 4 | 1 |
| Public Notice Rule | Reporting | 4 | 1 |
| Nitrate-Nitrite | Inorganic | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 10536 | B | 13 | 0 | Bedford Consolidated W.d. |
All ZIP Codes in Katonah
- 10536 [B] - 13 violations
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.
Katonah Community Health Snapshot
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
Vertical line = national average. ■ Above national · ■ Below national
What's in Katonah's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Katonah Infrastructure Age
With 79% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Lead can reach tap water from service lines, solder and brass fittings inside a building, which is why housing age draws attention in Katonah, where the median build year is 1965.
Over half of homes in Katonah were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Katonah
Measured against the median home value, the estimated cost of fixing the issues flagged for Katonah lands in the lowest of the three tiers this page uses.
Estimated remediation costs in Katonah can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 136% above the New York average.
Katonah: Lead Risk & Vulnerable Populations
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.
What does the lead data say about a home in Katonah? Only part of the story. The average of 90th-percentile lead results across the city's ZIP codes is at least 0.010 mg/L, and roughly 79% of dwellings date from the pre-1986 period. Lead usually enters drinking water from a building's own service line and plumbing, so results at any one faucet can be higher or lower than the area average.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Katonah: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Katonah contains 29 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $4,195. 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 $500 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 Katonah, NY