Public water system · MD0180207
ActiveLexington Estates
At a glance
Lexington Estates (PWSID MD0180207) is an active community water system in St. Mary's County, Michigan. It reports serving 300 people through 73 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 8 violations for this system; 4 are health-based, and the most recent began in November 2014.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
300
Service connections
73
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Lexington Estates compare with other water systems in St. Mary's County?
By EPA's size categories, Lexington Estates is a very small system (500 people or fewer). St. Mary's County has 1 active public water system, and Lexington Estates is the largest of them by population served. Its population served is roughly in line with the county average of 300 people per system, and accounts for 100% of the 300 people reported by systems filed under the county. Across Michigan, the 10,599 active systems average 847 people each. Nationally, the average active community water system reports serving 6,703 people, so Lexington Estates 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. Michigan has 1,332 active community water systems, 13% of the state's 10,599 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,214 Michigan systems (96%) list groundwater as their primary source.
Who owns and regulates Lexington Estates?
EPA lists Lexington Estates as privately owned. The MD 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 1 active systems in St. Mary's County (100%) are also privately owned.
Does Lexington Estates have drinking water violations?
EPA's records list 8 violations for this system; 4 are health-based, and the most recent began in November 2014. The violations listed here began between June 1994 and November 2014. By type: 4 monitoring and reporting and 4 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 7 as resolved and 1 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2014-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2011-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2008-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1999-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1996-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1994-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 8 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.
Lexington Estates: frequently asked questions
Who runs Lexington Estates?
Lexington Estates (PWSID MD0180207) is a community water system privately owned. It is regulated by the MD state drinking water program.
How many people does Lexington Estates serve?
Lexington Estates reports serving 300 people through 73 service connections in St. Mary's County, Michigan.
Where does Lexington Estates 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 Lexington Estates have any drinking water violations?
EPA's records list 8 violations for this system; 4 are health-based, and the most recent began in November 2014. 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 Lexington Estates' 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 8 violations for this system; 4 are health-based, and the most recent began in November 2014. For current results, consult the system's annual water quality report, EPA ECHO, or the MD state drinking water program.
Where can I find Lexington Estates' water quality report?
As a community water system, Lexington Estates 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.
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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, “Lexington Estates, PWSID MD0180207, Michigan”, https://aquacensus.com/water-systems/michigan/lexington-estates-md0180207 (data as of October 1, 2026).