Public water system · ND5311471
ActiveMissouri-Yellowstone Interpretive Center
At a glance
Missouri-Yellowstone Interpretive Center (PWSID ND5311471) is an active transient non-community water system in Williams County, North Dakota. It reports serving 100 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 11 violations for this system; none is health-based, and the most recent began in April 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
100
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Missouri-Yellowstone Interpretive Center compare with other water systems in Williams County?
By EPA's size categories, Missouri-Yellowstone Interpretive Center is a very small system (500 people or fewer). Williams County has 19 active public water systems. Its population served is well below the county average of 1,990 people per system, and accounts for 0.3% of the 37,806 people reported by systems filed under the county. Across North Dakota, the 403 active systems average 1,864 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Missouri-Yellowstone Interpretive Center is about 31% 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. North Dakota has 81 active transient non-community water systems, 20% of the state's 403 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 177 North Dakota systems (44%) list groundwater as their primary source.
Who owns and regulates Missouri-Yellowstone Interpretive Center?
EPA lists Missouri-Yellowstone Interpretive Center as owned by a state government. The ND 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 19 active systems in Williams County (5.3%) are also owned by a state government.
Does Missouri-Yellowstone Interpretive Center have drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in April 2025. The violations listed here began between July 2011 and April 2025. By type: 10 monitoring and 1 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (10 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2025-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-08-01 | 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 |
| 2020-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2011-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 11 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.
Missouri-Yellowstone Interpretive Center: frequently asked questions
Who runs Missouri-Yellowstone Interpretive Center?
Missouri-Yellowstone Interpretive Center (PWSID ND5311471) is a transient non-community water system owned by a state government. It is regulated by the ND state drinking water program.
How many people does Missouri-Yellowstone Interpretive Center serve?
Missouri-Yellowstone Interpretive Center reports serving 100 people through 1 service connection in Williams County, North Dakota.
Where does Missouri-Yellowstone Interpretive Center 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 Missouri-Yellowstone Interpretive Center have any drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in April 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 Missouri-Yellowstone Interpretive Center'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 11 violations for this system; none is health-based, and the most recent began in April 2025. For current results, consult EPA ECHO, or the ND state drinking water program.
Where can I find Missouri-Yellowstone Interpretive Center's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Missouri-Yellowstone Interpretive Center 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 Williams County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Williston City of | Williams | 26,426 | Community | Surface water |
| Northwest Rural Water District | Williams | 5,102 | Community | Purchased surface water |
| Tioga City of | Williams | 2,202 | Community | Purchased surface water |
| R & T Water System | Williams | 1,003 | Community | Purchased surface water |
| Ray City of | Williams | 950 | Community | Purchased surface water |
| Trenton Water Users Assoc | Williams | 840 | 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, “Missouri-Yellowstone Interpretive Center, PWSID ND5311471, North Dakota”, https://aquacensus.com/water-systems/north-dakota/missouri-yellowstone-interpretive-center-nd5311471 (data as of October 1, 2026).