Public water system · NY5203322
ActiveMountaindale Wd
At a glance
Mountaindale Wd (PWSID NY5203322) is an active community water system in Sullivan County, New York. It reports serving 320 people through 285 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; none is health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
320
Service connections
285
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Mountaindale Wd compare with other water systems in Sullivan County?
By EPA's size categories, Mountaindale Wd is a very small system (500 people or fewer). Sullivan County has 497 active public water systems. Its population served is about 21% above the county average of 264 people per system, and accounts for 0.2% of the 131,057 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 community water system reports serving 6,703 people, so Mountaindale Wd is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. New York has 2,281 active community water systems, 28% 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 Mountaindale Wd?
EPA lists Mountaindale Wd 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. 40 of the 497 active systems in Sullivan County (8%) are also owned by a local government.
Does Mountaindale Wd have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in October 2024. The violations listed here began between January 2005 and October 2024. By type: 3 monitoring and reporting, 1 reporting, 1 monitoring and 1 public notice, recordkeeping or other. The contaminants or rules involved are Lead and Copper Rule Revisions, Revised Total Coliform Rule, Consumer Confidence Rule and Lead and Copper Rule. EPA lists 6 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 |
|---|---|---|---|---|
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2022-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2006-01-10 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
All 6 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.
Mountaindale Wd: frequently asked questions
Who runs Mountaindale Wd?
Mountaindale Wd (PWSID NY5203322) is a community water system owned by a local government. It is regulated by the NY state drinking water program.
How many people does Mountaindale Wd serve?
Mountaindale Wd reports serving 320 people through 285 service connections in Sullivan County, New York.
Where does Mountaindale Wd 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 Mountaindale Wd have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in October 2024. 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 Mountaindale Wd'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 6 violations for this system; none is health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.
Where can I find Mountaindale Wd's water quality report?
As a community water system, Mountaindale Wd must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Sullivan County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Monticello Village | Sullivan | 8,000 | Community | Surface water |
| Fallsburg Who-Ls-Sf | Sullivan | 7,850 | Community | Groundwater |
| Bethel Woods Center for the Arts | Sullivan | 5,000 | Transient non-community | Groundwater |
| Liberty Village | Sullivan | 3,900 | Community | Surface water |
| Stevensville+Rfl | Sullivan | 3,250 | Community | Groundwater |
| Swan in Swan Lake | Sullivan | 2,900 | Community | Groundwater |
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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, “Mountaindale Wd, PWSID NY5203322, New York”, https://aquacensus.com/water-systems/new-york/mountaindale-wd-ny5203322 (data as of October 1, 2026).