Public water system · NY5919522
ActiveMonteverde at Oldstone
At a glance
Monteverde at Oldstone (PWSID NY5919522) is an active transient non-community water system in Westchester County, New York. It reports serving 150 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
150
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Monteverde at Oldstone compare with other water systems in Westchester County?
By EPA's size categories, Monteverde at Oldstone 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 transient non-community water system reports serving 144 people, so Monteverde at Oldstone is roughly in line with that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. New York has 5,182 active transient non-community water systems, 63% 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 Monteverde at Oldstone?
EPA lists Monteverde at Oldstone as privately owned. 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. 185 of the 273 active systems in Westchester County (68%) are also privately owned.
Does Monteverde at Oldstone have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2021. The violations listed here began between January 2010 and July 2021. By type: 5 monitoring and reporting, 4 monitoring and 3 public notice, recordkeeping or other. The contaminant or rule involved most often is Revised Total Coliform Rule (4 of them). EPA lists 12 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2021-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2012-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2010-03-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2010-02-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2010-01-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2010-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
The 12 most recent 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.
Monteverde at Oldstone: frequently asked questions
Who runs Monteverde at Oldstone?
Monteverde at Oldstone (PWSID NY5919522) is a transient non-community water system privately owned. It is regulated by the NY state drinking water program.
How many people does Monteverde at Oldstone serve?
Monteverde at Oldstone reports serving 150 people through 1 service connection in Westchester County, New York.
Where does Monteverde at Oldstone 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 Monteverde at Oldstone have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2021. 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 Monteverde at Oldstone'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2021. For current results, consult EPA ECHO, or the NY state drinking water program.
Where can I find Monteverde at Oldstone's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Monteverde at Oldstone is a 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 |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Monteverde at Oldstone, PWSID NY5919522, New York”, https://aquacensus.com/water-systems/new-york/monteverde-at-oldstone-ny5919522 (data as of October 1, 2026).