Harvey School

PWSID: NY5912829

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1 active violation (non-health-based)
This system has unresolved violations related to monitoring, reporting, or procedural requirements, but none involve contaminant levels exceeding EPA health limits.

This system has more violations on record than 91% of water systems in New York.

Violation trend: 8.2 per year over the last 5 years, up from 4.4 per year in the previous 5.

System Details

Population Served	510
Service Connections	15
Water Source	Groundwater
System Type	Community Water System
Owner	Private
Status	Active
City	Katonah
EPA ZIP on File	10536

Areas Served

Westchester County

Lead & Copper Testing

Contaminant	Level	EPA Action Level	Status
Lead (90th percentile)	0.0130 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0080 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0024 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0024 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0010 mg/L	0.015 mg/L	Below Action Level

1 Active Violations

Contaminant	Violation	Date	Health-Based	Status
7000	Other	2023-01-01		Open

Violation History (64 total)

Contaminant	Violation	Date	Health-Based	Status
2806	MCL Measured: 0.000012 MG/L (limit: 0.000010 MG/L)	2025-01-01	Yes	Acknowledged
2805	MCL Measured: 0.000011 MG/L (limit: 0.000010 MG/L)	2024-10-01	Yes	Acknowledged
2806	MCL Measured: 0.000012 MG/L (limit: 0.000010 MG/L)	2024-10-01	Yes	Acknowledged
2805	MCL Measured: 0.000011 MG/L (limit: 0.000010 MG/L)	2024-07-01	Yes	Acknowledged
2805	MCL Measured: 0.000011 MG/L (limit: 0.000010 MG/L)	2024-07-01	Yes	Acknowledged
2805	MCL Measured: 0.000011 MG/L (limit: 0.000010 MG/L)	2024-07-01	Yes	Acknowledged
2806	MCL Measured: 0.000017 MG/L (limit: 0.000010 MG/L)	2024-07-01	Yes	Acknowledged
2806	MCL Measured: 0.000017 MG/L (limit: 0.000010 MG/L)	2024-07-01	Yes	Acknowledged
2806	MCL Measured: 0.000017 MG/L (limit: 0.000010 MG/L)	2024-07-01	Yes	Acknowledged
2805	MCL Measured: 0.000011 MG/L (limit: 0.000010 MG/L)	2024-04-01	Yes	Acknowledged
2805	MCL Measured: 0.000011 MG/L (limit: 0.000010 MG/L)	2024-04-01	Yes	Acknowledged
2806	MCL Measured: 0.000013 MG/L (limit: 0.000010 MG/L)	2024-04-01	Yes	Acknowledged
2806	MCL Measured: 0.000013 MG/L (limit: 0.000010 MG/L)	2024-04-01	Yes	Acknowledged
2805	MCL Measured: 0.000016 MG/L (limit: 0.000010 MG/L)	2024-01-01	Yes	Acknowledged
2806	MCL Measured: 0.000016 MG/L (limit: 0.000010 MG/L)	2024-01-01	Yes	Acknowledged
8000	MON	2023-10-01		Acknowledged
8000	MON	2023-10-01		Acknowledged
8000	MON	2023-10-01		Acknowledged
2805	MCL Measured: 0.000012 MG/L (limit: 0.000010 MG/L)	2023-10-01	Yes	Acknowledged
2806	MCL Measured: 0.000019 MG/L (limit: 0.000010 MG/L)	2023-10-01	Yes	Acknowledged
2805	MCL Measured: 0.000011 MG/L (limit: 0.000010 MG/L)	2023-07-01	Yes	Acknowledged
2806	MCL Measured: 0.000016 MG/L (limit: 0.000010 MG/L)	2023-07-01	Yes	Acknowledged
2805	MCL Measured: 0.000013 MG/L (limit: 0.000010 MG/L)	2023-04-01	Yes	Acknowledged
2806	MCL Measured: 0.000018 MG/L (limit: 0.000010 MG/L)	2023-04-01	Yes	Acknowledged
1038	MR	2023-01-01	Major	Acknowledged
1038	MR	2023-01-01	Major	Acknowledged
1040	MR	2023-01-01	Major	Acknowledged
1040	MR	2023-01-01	Major	Acknowledged
1041	MR	2023-01-01	Major	Acknowledged
1041	MR	2023-01-01	Major	Acknowledged
2805	MCL Measured: 0.000012 MG/L (limit: 0.000010 MG/L)	2023-01-01	Yes	Acknowledged
2806	MCL Measured: 0.000015 MG/L (limit: 0.000010 MG/L)	2023-01-01	Yes	Acknowledged
2805	MCL Measured: 0.000012 MG/L (limit: 0.000010 MG/L)	2022-10-01	Yes	Acknowledged
2806	MCL Measured: 0.000016 MG/L (limit: 0.000010 MG/L)	2022-10-01	Yes	Acknowledged
2805	MCL Measured: 13.90 NG/L (limit: 10.00 NG/L)	2022-07-01	Yes	Acknowledged
2806	MCL Measured: 16.80 NG/L (limit: 10.00 NG/L)	2022-07-01	Yes	Acknowledged
2805	MCL Measured: 13.60 NG/L (limit: 10.00 NG/L)	2022-04-01	Yes	Acknowledged
2806	MCL Measured: 17.50 NG/L (limit: 10.00 NG/L)	2022-04-01	Yes	Acknowledged
2805	MCL Measured: 0.000022 MG/L (limit: 0.000010 MG/L)	2022-01-01	Yes	Acknowledged
2806	MCL Measured: 0.000015 MG/L (limit: 0.000010 MG/L)	2022-01-01	Yes	Acknowledged
4002	MR	2020-01-01		Acknowledged
4002	MR	2020-01-01		Acknowledged
4006	MR	2020-01-01		Acknowledged
4006	MR	2020-01-01		Acknowledged
4010	MR	2020-01-01		Acknowledged
4010	MR	2020-01-01		Acknowledged
4020	MR	2020-01-01		Acknowledged
4020	MR	2020-01-01		Acknowledged
4030	MR	2020-01-01		Acknowledged
4030	MR	2020-01-01		Acknowledged

Showing 50 of 63 historical violations.

Understanding This Water System's Record

Harvey School is a community water system water system that draws from groundwater sources and serves a population of 510 in Katonah, New York. This page shows its complete compliance history as reported to the EPA's Safe Drinking Water Information System (SDWIS), the federal database that tracks every public water system in the United States.

What Do These Violations Mean?

Health-based violations mean the system exceeded an EPA maximum contaminant level (MCL) or failed to provide required treatment. These indicate potential health risks from contaminants like lead, arsenic, bacteria, nitrates, or disinfection byproducts. Non-health-based violations involve monitoring, reporting, or procedural requirements — the system missed a testing deadline or failed to notify customers, but contaminant levels were not necessarily unsafe.

What Should You Do?

Your water utility is required to publish an annual Consumer Confidence Report (CCR) that details test results and any violations. If your system has active health-based violations, consider a certified water filter rated for the specific contaminants involved. The contaminant guides on this site explain health risks and filter options for common pollutants. For the most current results, contact your water utility directly — EPA data can lag weeks or months behind real-time testing.