Public water system · NY2701047
ActiveMcwa
At a glance
Mcwa (PWSID NY2701047) is an active community water system serving Orleans and Monroe counties, New York. It reports serving 525,262 people through 178,932 service connections. Its primary water source is surface water, and EPA lists it as under public/private ownership. EPA's records list one violation for this system; it is health-based, and the most recent began in January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
525,262
Service connections
178,932
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Mcwa compare with other water systems in New York?
By EPA's size categories, Mcwa is a very large system (more than 100,000 people). 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 Mcwa is about 78 times 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 296 New York systems (3.6%) list surface water as their primary source.
Who owns and regulates Mcwa?
EPA lists Mcwa as under public/private ownership. 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.
Does Mcwa have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in January 2025. By type: 1 required treatment not met. The contaminant or rule involved is Lead and Copper Rule. EPA lists 1 as unaddressed. 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 |
|---|---|---|---|---|
| 2025-01-01 | Required treatment not metOCCT/SOWT Treatment Installation/Demonstration · code 58 | Lead and Copper Rulecode 5000 | Yes | Unaddressed |
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.
Mcwa: frequently asked questions
Who runs Mcwa?
Mcwa (PWSID NY2701047) is a community water system under public/private ownership. It is regulated by the NY state drinking water program.
How many people does Mcwa serve?
Mcwa reports serving 525,262 people through 178,932 service connections in Orleans and Monroe counties, New York.
Where does Mcwa get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Mcwa have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in January 2025. 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 Mcwa'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 health-based, and the most recent began in January 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.
Where can I find Mcwa's water quality report?
As a community water system, Mcwa 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 Orleans County(the first county EPA lists for this system)
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Medina Village | Orleans | 6,500 | Community | Purchased surface water |
| Albion Village | Orleans | 6,000 | Community | Surface water |
| Mcwa Kendall Water District | Orleans | 3,000 | Community | Purchased surface water |
| Carlton Water District | Orleans | 2,800 | Community | Purchased surface water |
| Albion Town | Orleans | 2,725 | Community | Purchased surface water |
| Ridgeway Town Wd | Orleans | 2,600 | 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, “Mcwa, PWSID NY2701047, New York”, https://aquacensus.com/water-systems/new-york/mcwa-ny2701047 (data as of October 1, 2026).