Public water system · MT0003411
ActiveReynolds Market Sidney
At a glance
Reynolds Market Sidney (PWSID MT0003411) is an active transient non-community water system in Richland County, Montana. It reports serving 25 people through 1 service connection. Its primary water source is purchased groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
1
Primary source
GWP
Purchased groundwater
System type
TNCWS
Transient non-community water system
System record
How does Reynolds Market Sidney compare with other water systems in Richland County?
By EPA's size categories, Reynolds Market Sidney is a very small system (500 people or fewer). Richland County has 16 active public water systems. Its population served is well below the county average of 442 people per system, and accounts for 0.4% of the 7,074 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 Reynolds Market Sidney 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. Montana has 1,206 active transient non-community water systems, 51% of the state's 2,378 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 104 Montana systems (4.4%) list purchased groundwater as their primary source.
Who owns and regulates Reynolds Market Sidney?
EPA lists Reynolds Market Sidney as privately owned. 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. 10 of the 16 active systems in Richland County (63%) are also privately owned.
Does Reynolds Market Sidney have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2026. The violations listed here began between July 2024 and April 2026. By type: 12 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (12 of them). EPA lists 8 as resolved and 4 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 |
|---|---|---|---|---|
| 2026-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2026-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2026-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2025-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-10-01 | 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 | Archived |
| 2024-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | 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.
Reynolds Market Sidney: frequently asked questions
Who runs Reynolds Market Sidney?
Reynolds Market Sidney (PWSID MT0003411) is a transient non-community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Reynolds Market Sidney serve?
Reynolds Market Sidney reports serving 25 people through 1 service connection in Richland County, Montana.
Where does Reynolds Market Sidney get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Reynolds Market Sidney have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2026. 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 Reynolds Market Sidney'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, none is health-based, and the most recent began in April 2026. For current results, consult EPA ECHO, or the MT state drinking water program.
Where can I find Reynolds Market Sidney's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Reynolds Market Sidney 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 Richland County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sidney City of | Richland | 5,000 | Community | Groundwater |
| Fairview Town of | Richland | 1,000 | Community | Groundwater |
| Redwood Park Work Camp Phase 1 | Richland | 150 | Transient non-community | Groundwater |
| Lambert Sewer and Water Assn | Richland | 150 | Community | Groundwater |
| Sidney Richland County Airport Unapprove | Richland | 115 | Transient non-community | Groundwater |
| Savage Public School | Richland | 114 | 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, “Reynolds Market Sidney, PWSID MT0003411, Montana”, https://aquacensus.com/water-systems/montana/reynolds-market-sidney-mt0003411 (data as of October 1, 2026).