Public water system · NY5907702
ActiveOld Lewisboro Elementary School
At a glance
Old Lewisboro Elementary School (PWSID NY5907702) is an active non-transient non-community water system in Westchester County, New York. It reports serving 50 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in October 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Old Lewisboro Elementary School compare with other water systems in Westchester County?
By EPA's size categories, Old Lewisboro Elementary School is a very small system (500 people or fewer). Westchester County has 273 active public water systems. Its population served is well below the county average of 3,808 people per system, and accounts for less than 0.1% of the 1,039,556 people reported by systems filed under the county. Across New York, the 8,167 active systems average 2,374 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Old Lewisboro Elementary School is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. New York has 704 active non-transient non-community water systems, 8.6% of the state's 8,167 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 7,096 New York systems (87%) list groundwater as their primary source.
Who owns and regulates Old Lewisboro Elementary School?
EPA lists Old Lewisboro Elementary School as owned by a local government. The NY state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 77 of the 273 active systems in Westchester County (28%) are also owned by a local government.
Does Old Lewisboro Elementary School have drinking water violations?
EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in October 2017. The violations listed here began between September 2003 and October 2017. By type: 7 monitoring and reporting and 1 required treatment not met. The contaminant or rule involved most often is Lead and Copper Rule (6 of them). EPA lists 7 as resolved and 1 as unaddressed. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2017-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2012-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2012-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2010-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2009-07-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2008-07-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2003-09-01 | Required treatment not metOCCT/SOWT Study/Recommendation · code 57 | Lead and Copper Rulecode 5000 | Yes | Unaddressed |
All 8 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Old Lewisboro Elementary School: frequently asked questions
Who runs Old Lewisboro Elementary School?
Old Lewisboro Elementary School (PWSID NY5907702) is a non-transient non-community water system owned by a local government. It is regulated by the NY state drinking water program.
How many people does Old Lewisboro Elementary School serve?
Old Lewisboro Elementary School reports serving 50 people through 1 service connection in Westchester County, New York.
Where does Old Lewisboro Elementary School get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Old Lewisboro Elementary School have any drinking water violations?
EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in October 2017. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Old Lewisboro Elementary School's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in October 2017. For current results, consult EPA ECHO, or the NY state drinking water program.
Where can I find Old Lewisboro Elementary School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Old Lewisboro Elementary School is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Westchester County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Yonkers City | Westchester | 211,569 | Community | Purchased surface water |
| Veolia Water New York, Inc.. Rd-1 | Westchester | 146,732 | Community | Purchased surface water |
| Greenburgh Consolidated Wd #1 | Westchester | 86,624 | Community | Purchased surface water |
| Mount Vernon Water Department | Westchester | 73,893 | Community | Purchased surface water |
| Westchester Joint Water Works | Westchester | 59,629 | Community | Surface water |
| White Plains City | Westchester | 59,559 | Community | Purchased surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Old Lewisboro Elementary School, PWSID NY5907702, New York”, https://aquacensus.com/water-systems/new-york/old-lewisboro-elementary-school-ny5907702 (data as of October 1, 2026).