Fallon County, Montana — public water systems
At a glance
4 active public water systems are filed under Fallon County, Montana in EPA's SDWIS records, together reporting 2,185 people served. The largest is City of Baker, which reports serving 1,858 people. All 4 are community water systems serving people where they live.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
4
Population served
2.2K
Community systems
4
Groundwater share
100%
How does Fallon County compare with other Montana counties?
Fallon County has the 51st-most active public water systems among the 76 counties listed for active Montana systems in EPA records; among the 55 with 3 or more systems, the median has 16. Its systems report 2,185 people served in total, the 44th-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 546 people, about 12% above the Montana average of 489. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.
Where does Fallon County's drinking water come from?
By primary water source, Fallon County's active systems draw on groundwater (2, 50%) and purchased groundwater (2, 50%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 89% and 11% across Montana. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, City of Baker, draws primarily on groundwater.
What kinds of water systems operate in Fallon County?
Fallon County's active systems break down as 4 community systems (100%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. EPA lists their owner types as local government (75%) and private (25%).
Water systems in Fallon County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Baker City of | Fallon | 1,858 | Community | Groundwater |
| 2 | Plevna Town of | Fallon | 130 | Community | Groundwater |
| 3 | North Baker Water and Or Sewer Dist | Fallon | 112 | Community | Purchased groundwater |
| 4 | Fallon County Water District | Fallon | 85 | Community | Purchased groundwater |
Fallon County water systems: frequently asked questions
How many public water systems are in Fallon County, Montana?
EPA's SDWIS records file 4 active public water systems under Fallon County, Montana: 4 community systems (100%).
Who supplies drinking water in Fallon County, MT?
The largest community water systems filed under Fallon County are City of Baker (1,858 people served), Town of Plevna (130 people served) and North Baker Water and Or Sewer Dist (112 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.
Does Fallon County's drinking water come from groundwater or surface water?
Of the 4 active public water systems in Fallon County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, City of Baker, uses groundwater.
Where can I find a water quality report for Fallon County?
Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 4 community systems are filed under Fallon County, so the report to look for is the one from the system that supplies your address.
How can I check violations for a water system in Fallon County?
Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.
More Montana water systems
- All Montana public water systems· 2,378 active
- McCone County· 6 systems
- Garfield County· 6 systems
- Carter County· 5 systems
- Roosevelt County· 4 systems
- Golden Valley County· 4 systems
- Powder River County· 3 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
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, “Public water systems in Fallon County, Montana”, https://aquacensus.com/water-systems/montana/fallon (data as of October 1, 2026).