Public water system · NY4411889
ActiveSt. Lawrence Seaway - Maintenance
At a glance
St. Lawrence Seaway - Maintenance (PWSID NY4411889) is an active non-transient non-community water system in St. Lawrence County, New York. It reports serving 65 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
65
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does St. Lawrence Seaway - Maintenance compare with other water systems in St. Lawrence County?
By EPA's size categories, St. Lawrence Seaway - Maintenance is a very small system (500 people or fewer). St. Lawrence County has 229 active public water systems. Its population served is well below the county average of 354 people per system, and accounts for less than 0.1% of the 81,125 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 St. Lawrence Seaway - Maintenance 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 St. Lawrence Seaway - Maintenance?
EPA lists St. Lawrence Seaway - Maintenance as owned by the federal 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. 1 of the 229 active systems in St. Lawrence County (0.4%) are also owned by the federal government.
Does St. Lawrence Seaway - Maintenance have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2018. The violations listed here began between March 2005 and January 2018. By type: 3 monitoring and reporting. The contaminants or rules involved are Nitrate, Lead and Copper Rule and Total coliform bacteria (TCR). EPA lists 3 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 |
|---|---|---|---|---|
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2012-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2005-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 3 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.
St. Lawrence Seaway - Maintenance: frequently asked questions
Who runs St. Lawrence Seaway - Maintenance?
St. Lawrence Seaway - Maintenance (PWSID NY4411889) is a non-transient non-community water system owned by the federal government. It is regulated by the NY state drinking water program.
How many people does St. Lawrence Seaway - Maintenance serve?
St. Lawrence Seaway - Maintenance reports serving 65 people through 1 service connection in St. Lawrence County, New York.
Where does St. Lawrence Seaway - Maintenance 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 St. Lawrence Seaway - Maintenance have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2018. 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 St. Lawrence Seaway - Maintenance'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 3 violations for this system; none is health-based, and the most recent began in January 2018. For current results, consult EPA ECHO, or the NY state drinking water program.
Where can I find St. Lawrence Seaway - Maintenance's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. St. Lawrence Seaway - Maintenance 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 St. Lawrence County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Massena Village | St. Lawrence | 16,729 | Community | Surface water |
| Ogdensburg City | St. Lawrence | 10,064 | Community | Surface water |
| Potsdam Village | St. Lawrence | 8,312 | Community | Surface water |
| Canton Village | St. Lawrence | 7,055 | Community | Groundwater |
| Gouverneur | St. Lawrence | 4,263 | Community | Surface water |
| East Louisville Water District | St. Lawrence | 3,235 | Community | 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, “St. Lawrence Seaway - Maintenance, PWSID NY4411889, New York”, https://aquacensus.com/water-systems/new-york/st-lawrence-seaway-maintenance-ny4411889 (data as of October 1, 2026).