Public water system · MO5292380
ActiveD Diamond Travel Plaza
At a glance
D Diamond Travel Plaza (PWSID MO5292380) is an active transient non-community water system in Dallas County, Missouri. It reports serving 25 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in November 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does D Diamond Travel Plaza compare with other water systems in Dallas County?
By EPA's size categories, D Diamond Travel Plaza is a very small system (500 people or fewer). Dallas County has 17 active public water systems. Its population served is well below the county average of 367 people per system, and accounts for 0.4% of the 6,244 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 D Diamond Travel Plaza 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 D Diamond Travel Plaza?
EPA lists D Diamond Travel Plaza 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. 14 of the 17 active systems in Dallas County (82%) are also privately owned.
Does D Diamond Travel Plaza have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in November 2025. The violations listed here began between September 2014 and November 2025. By type: 6 monitoring and 6 contaminant level above the legal limit. The contaminant or rule involved most often is Revised Total Coliform Rule (6 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2025-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2015-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2015-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2015-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2014-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2014-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
The 12 most recent 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.
D Diamond Travel Plaza: frequently asked questions
Who runs D Diamond Travel Plaza?
D Diamond Travel Plaza (PWSID MO5292380) is a transient non-community water system privately owned. It is regulated by the MO state drinking water program.
How many people does D Diamond Travel Plaza serve?
D Diamond Travel Plaza reports serving 25 people through 1 service connection in Dallas County, Missouri.
Where does D Diamond Travel Plaza 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 D Diamond Travel Plaza have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in November 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 D Diamond Travel Plaza'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. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in November 2025. For current results, consult EPA ECHO, or the MO state drinking water program.
Where can I find D Diamond Travel Plaza's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. D Diamond Travel Plaza 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 Dallas County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Buffalo Pws | Dallas | 3,462 | Community | Groundwater |
| Danieldale Community Water Service | Dallas | 702 | Community | Purchased surface water |
| Urbana Pws | Dallas | 409 | Community | Groundwater |
| Meltons 64 73 Junction | Dallas | 300 | Transient non-community | Groundwater |
| Rivers Bend Campground | Dallas | 300 | Transient non-community | Groundwater |
| Prairie Grove School | Dallas | 245 | Non-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, “D Diamond Travel Plaza, PWSID MO5292380, Missouri”, https://aquacensus.com/water-systems/missouri/d-diamond-travel-plaza-mo5292380 (data as of October 1, 2026).