Water Quality in CHAPPAQUA, NY (10514)

EPA violation data for public water systems serving ZIP code 10514.

1,991

Total Violations

6

Health-Based

1,985

Monitoring / Reporting

1,991

Resolved

What does this mean?

1,991 of 1,991 violations have been resolved. 6 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 1,985 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.

Water systems: 12 Population served: 19,484

Violations Detail (1991 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
ChlorineMonitoringN/AN/AAug 31, 2025ResolvedEye and nose irritation; stomach discomfort
ChlorineMonitoringN/AN/AAug 31, 2025ResolvedEye and nose irritation; stomach discomfort
ChlorineMonitoringN/AN/AAug 31, 2025ResolvedEye and nose irritation; stomach discomfort
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
Lead and Copper RuleMonitoringN/AN/ADec 31, 2024ResolvedN/A
Lead and Copper RuleMonitoringN/AN/ADec 31, 2024ResolvedN/A
Lead and Copper RuleMonitoringN/AN/ADec 31, 2024ResolvedN/A

Lead & Copper Levels

Violation Timeline

2025(7)

Chlorine

27

Aug 31Resolved

Chlorine

27

Aug 31Resolved

Chlorine

27

Aug 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

2024(132)

Lead and Copper Rule

52

Dec 31Resolved

Lead and Copper Rule

52

Dec 31Resolved

Lead and Copper Rule

52

Dec 31Resolved

Lead and Copper Rule

52

Dec 31Resolved

Public Notice

75

Oct 10Resolved

Public Notice

75

Oct 10Resolved

Lead and Copper Rule

52

Jun 30Resolved

Lead and Copper Rule

52

Jun 30Resolved

Lead and Copper Rule

52

Jun 30Resolved

Lead and Copper Rule

52

Jun 30Resolved

Public Notice

75

Feb 10Resolved

Public Notice

75

Feb 10Resolved

Public Notice

75

Feb 10Resolved

Public Notice

75

Feb 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

Public Notice

75

Jan 10Resolved

How Does This Compare?

CHAPPAQUA (10514) has 1,991 recorded violations, including 6 health-based. All violations have been resolved, which is a positive sign for current water quality. Consider testing your tap water independently for added peace of mind.

Recommended Water Filters

Based on the contaminants detected in your area, these filter types may help improve your water quality.

Reverse Osmosis System

Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.

Targets:Lead, Copper, Arsenic, Mercury, Cadmium

Look for:NSF/ANSI 58 certified

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

UV Water Purifier

Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.

Targets:E. coli, Coliform, Giardia, Cryptosporidium

Look for:NSF/ANSI 55 (Class A) certified

Always look for filters certified by NSF International for the specific contaminants you want to remove.

Nearby ZIP Codes

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