Public water system · MT0001694
ActiveHysham Rest Area Eastbound
At a glance
Hysham Rest Area Eastbound (PWSID MT0001694) is an active transient non-community water system in Treasure County, Montana. It reports serving 400 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 4 violations for this system; none is health-based, and the most recent began in January 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
400
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Hysham Rest Area Eastbound compare with other water systems in Treasure County?
By EPA's size categories, Hysham Rest Area Eastbound is a very small system (500 people or fewer). Treasure County has 3 active public water systems, and Hysham Rest Area Eastbound is the 2nd-largest of them by population served. Its population served is roughly in line with the county average of 387 people per system, and accounts for 34% of the 1,162 people reported by systems filed under the county. Across Montana, the 2,378 active systems average 489 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Hysham Rest Area Eastbound is about 178% above 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. Montana has 1,206 active transient non-community water systems, 51% of the state's 2,378 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,994 Montana systems (84%) list groundwater as their primary source.
Who owns and regulates Hysham Rest Area Eastbound?
EPA lists Hysham Rest Area Eastbound as owned by a state government. The MT state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 2 of the 3 active systems in Treasure County (67%) are also owned by a state government.
Does Hysham Rest Area Eastbound have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2021. The violations listed here began between January 1981 and January 2021. By type: 4 monitoring and reporting. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2005-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1981-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
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.
Hysham Rest Area Eastbound: frequently asked questions
Who runs Hysham Rest Area Eastbound?
Hysham Rest Area Eastbound (PWSID MT0001694) is a transient non-community water system owned by a state government. It is regulated by the MT state drinking water program.
How many people does Hysham Rest Area Eastbound serve?
Hysham Rest Area Eastbound reports serving 400 people through 1 service connection in Treasure County, Montana.
Where does Hysham Rest Area Eastbound 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 Hysham Rest Area Eastbound have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2021. 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 Hysham Rest Area Eastbound'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 January 2021. For current results, consult EPA ECHO, or the MT state drinking water program.
Where can I find Hysham Rest Area Eastbound's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Hysham Rest Area Eastbound 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 Treasure County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Hysham Rest Area Westbound | Treasure | 500 | Transient non-community | Groundwater |
| Hysham Town of | Treasure | 262 | Community | 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, “Hysham Rest Area Eastbound, PWSID MT0001694, Montana”, https://aquacensus.com/water-systems/montana/hysham-rest-area-eastbound-mt0001694 (data as of October 1, 2026).