Public water system · NY3921987
ActiveMahopac School Complex (Falls, Mms, Mhs)
At a glance
Mahopac School Complex (Falls, Mms, Mhs) (PWSID NY3921987) is an active non-transient non-community water system in Putnam County, New York. It reports serving 3,200 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,200
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Mahopac School Complex (Falls, Mms, Mhs) compare with other water systems in Putnam County?
By EPA's size categories, Mahopac School Complex (Falls, Mms, Mhs) is a small system (501 to 3,300 people). Putnam County has 382 active public water systems, and Mahopac School Complex (Falls, Mms, Mhs) is the 2nd-largest of them by population served. Its population served is about 21 times the county average of 150 people per system, and accounts for 5.6% of the 57,156 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 Mahopac School Complex (Falls, Mms, Mhs) is about 7.4 times 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 Mahopac School Complex (Falls, Mms, Mhs)?
EPA lists Mahopac School Complex (Falls, Mms, Mhs) 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. 342 of the 382 active systems in Putnam County (90%) are also privately owned.
Does Mahopac School Complex (Falls, Mms, Mhs) have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2024. By type: 1 reporting. The contaminant or rule involved is Lead and Copper Rule Revisions. EPA lists 1 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 |
The one violation in EPA's records.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.
Mahopac School Complex (Falls, Mms, Mhs): frequently asked questions
Who runs Mahopac School Complex (Falls, Mms, Mhs)?
Mahopac School Complex (Falls, Mms, Mhs) (PWSID NY3921987) is a non-transient non-community water system privately owned. It is regulated by the NY state drinking water program.
How many people does Mahopac School Complex (Falls, Mms, Mhs) serve?
Mahopac School Complex (Falls, Mms, Mhs) reports serving 3,200 people through 1 service connection in Putnam County, New York.
Where does Mahopac School Complex (Falls, Mms, Mhs) 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 Mahopac School Complex (Falls, Mms, Mhs) have any drinking water violations?
EPA's records list one violation for this system; it is not 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 Mahopac School Complex (Falls, Mms, Mhs)'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 one violation for this system; it is not health-based, and the most recent began in October 2024. For current results, consult EPA ECHO, or the NY state drinking water program.
Where can I find Mahopac School Complex (Falls, Mms, Mhs)'s water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mahopac School Complex (Falls, Mms, Mhs) 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 Putnam County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Carmel Wd 2 | Putnam | 5,000 | Community | Surface water |
| Cold Spring Village | Putnam | 2,666 | Community | Surface water |
| Brewster Village | Putnam | 2,162 | Community | Groundwater |
| Continental Village Wd | Putnam | 1,509 | Community | Purchased surface water |
| Mount Ebo Ws | Putnam | 1,500 | Community | Groundwater |
| Carmel Wd 3 | Putnam | 1,350 | 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, “Mahopac School Complex (Falls, Mms, Mhs), PWSID NY3921987, New York”, https://aquacensus.com/water-systems/new-york/mahopac-school-complex-falls-mms-mhs-ny3921987 (data as of October 1, 2026).