Public water system · OH4838512
ActiveOak Openings - Evergreen Lake
At a glance
Oak Openings - Evergreen Lake (PWSID OH4838512) is an active transient non-community water system in Lucas County, Ohio. It reports serving 95 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in November 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
95
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Oak Openings - Evergreen Lake compare with other water systems in Lucas County?
By EPA's size categories, Oak Openings - Evergreen Lake is a very small system (500 people or fewer). Lucas County has 44 active public water systems. Its population served is well below the county average of 9,828 people per system, and accounts for less than 0.1% of the 432,425 people reported by systems filed under the county. Across Ohio, the 3,854 active systems average 2,767 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Oak Openings - Evergreen Lake is about 34% below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Ohio has 2,282 active transient non-community water systems, 59% of the state's 3,854 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 3,446 Ohio systems (89%) list groundwater as their primary source.
Who owns and regulates Oak Openings - Evergreen Lake?
EPA lists Oak Openings - Evergreen Lake as privately owned. The OH state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 37 of the 44 active systems in Lucas County (84%) are also privately owned.
Does Oak Openings - Evergreen Lake have drinking water violations?
EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in November 2013. The violations listed here began between April 1995 and November 2013. By type: 7 monitoring and reporting and 3 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (9 of them). EPA lists 10 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 |
|---|---|---|---|---|
| 2013-11-16 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2013-11-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2013-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-10-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 10 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.
Oak Openings - Evergreen Lake: frequently asked questions
Who runs Oak Openings - Evergreen Lake?
Oak Openings - Evergreen Lake (PWSID OH4838512) is a transient non-community water system privately owned. It is regulated by the OH state drinking water program.
How many people does Oak Openings - Evergreen Lake serve?
Oak Openings - Evergreen Lake reports serving 95 people through 1 service connection in Lucas County, Ohio.
Where does Oak Openings - Evergreen Lake 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 Oak Openings - Evergreen Lake have any drinking water violations?
EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in November 2013. 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 Oak Openings - Evergreen Lake'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 10 violations for this system; 3 are health-based, and the most recent began in November 2013. For current results, consult EPA ECHO, or the OH state drinking water program.
Where can I find Oak Openings - Evergreen Lake's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Oak Openings - Evergreen Lake is a 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 Lucas County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Toledo City of | Lucas | 360,000 | Community | Surface water |
| Sylvania City | Lucas | 21,618 | Community | Purchased surface water |
| Oregon City | Lucas | 19,950 | Community | Surface water |
| Maumee City | Lucas | 14,286 | Community | Purchased surface water |
| Waterville City | Lucas | 6,500 | Community | Purchased surface water |
| Whitehouse Village | Lucas | 5,200 | 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, “Oak Openings - Evergreen Lake, PWSID OH4838512, Ohio”, https://aquacensus.com/water-systems/ohio/oak-openings-evergreen-lake-oh4838512 (data as of October 1, 2026).