Public water system · MO5252337
ActiveMayo Beach Subd
At a glance
Mayo Beach Subd (PWSID MO5252337) is an active transient non-community water system in Barry County, Missouri. It reports serving 37 people through 19 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in February 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
37
Service connections
19
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Mayo Beach Subd compare with other water systems in Barry County?
By EPA's size categories, Mayo Beach Subd is a very small system (500 people or fewer). Barry County has 88 active public water systems. Its population served is well below the county average of 341 people per system, and accounts for 0.1% of the 30,034 people reported by systems filed under the county. Across Missouri, the 2,943 active systems average 2,049 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Mayo Beach Subd is well 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. Missouri has 1,103 active transient non-community water systems, 37% of the state's 2,943 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,521 Missouri systems (86%) list groundwater as their primary source.
Who owns and regulates Mayo Beach Subd?
EPA lists Mayo Beach Subd as privately owned. The MO state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 70 of the 88 active systems in Barry County (80%) are also privately owned.
Does Mayo Beach Subd have drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in February 2015. The violations listed here began between October 1998 and February 2015. By type: 2 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 2015-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2014-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1998-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
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.
Mayo Beach Subd: frequently asked questions
Who runs Mayo Beach Subd?
Mayo Beach Subd (PWSID MO5252337) is a transient non-community water system privately owned. It is regulated by the MO state drinking water program.
How many people does Mayo Beach Subd serve?
Mayo Beach Subd reports serving 37 people through 19 service connections in Barry County, Missouri.
Where does Mayo Beach Subd 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 Mayo Beach Subd have any drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in February 2015. 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 Mayo Beach Subd'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; 2 are health-based, and the most recent began in February 2015. For current results, consult EPA ECHO, or the MO state drinking water program.
Where can I find Mayo Beach Subd's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mayo Beach Subd 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 Barry County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Monett Pws | Barry | 9,789 | Community | Groundwater |
| Cassville Pws | Barry | 3,290 | Community | Groundwater |
| Southwest Rural Water District 1 | Barry | 2,700 | Community | Groundwater |
| Purdy Pws | Barry | 1,100 | Community | Groundwater |
| Georges Processing Inc. | Barry | 1,000 | Non-transient non-community | Groundwater |
| Harter House of Shell Knob | Barry | 900 | Transient non-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, “Mayo Beach Subd, PWSID MO5252337, Missouri”, https://aquacensus.com/water-systems/missouri/mayo-beach-subd-mo5252337 (data as of October 1, 2026).