Public water system · ND5311777
ActiveStallion Oilfield Services-Williston
At a glance
Stallion Oilfield Services-Williston (PWSID ND5311777) is an active transient non-community water system in Williams County, North Dakota. It reports serving 90 people through 24 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 4 violations for this system; none is health-based, and the most recent began in April 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
90
Service connections
24
Primary source
SWP
Purchased surface water
System type
TNCWS
Transient non-community water system
System record
How does Stallion Oilfield Services-Williston compare with other water systems in Williams County?
By EPA's size categories, Stallion Oilfield Services-Williston 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 0.2% 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 Stallion Oilfield Services-Williston is about 37% 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 83 North Dakota systems (21%) list purchased surface water as their primary source.
Who owns and regulates Stallion Oilfield Services-Williston?
EPA lists Stallion Oilfield Services-Williston as privately owned. 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. 10 of the 19 active systems in Williams County (53%) are also privately owned.
Does Stallion Oilfield Services-Williston have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in April 2023. The violations listed here began between July 2020 and April 2023. By type: 4 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (4 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2023-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
All 4 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.
Stallion Oilfield Services-Williston: frequently asked questions
Who runs Stallion Oilfield Services-Williston?
Stallion Oilfield Services-Williston (PWSID ND5311777) is a transient non-community water system privately owned. It is regulated by the ND state drinking water program.
How many people does Stallion Oilfield Services-Williston serve?
Stallion Oilfield Services-Williston reports serving 90 people through 24 service connections in Williams County, North Dakota.
Where does Stallion Oilfield Services-Williston get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Stallion Oilfield Services-Williston have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in April 2023. 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 Stallion Oilfield Services-Williston'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 4 violations for this system; none is health-based, and the most recent began in April 2023. For current results, consult EPA ECHO, or the ND state drinking water program.
Where can I find Stallion Oilfield Services-Williston's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Stallion Oilfield Services-Williston 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, “Stallion Oilfield Services-Williston, PWSID ND5311777, North Dakota”, https://aquacensus.com/water-systems/north-dakota/stallion-oilfield-services-williston-nd5311777 (data as of October 1, 2026).