Liberty County, Montana — public water systems
At a glance
8 active public water systems are filed under Liberty County, Montana in EPA's SDWIS records, together reporting 1,827 people served. The largest is Town of Chester, which reports serving 870 people. All 8 are community water systems serving people where they live.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
8
Population served
1.8K
Community systems
8
Groundwater share
50%
How does Liberty County compare with other Montana counties?
Liberty County has the 39th-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 1,827 people served in total, the 45th-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 228 people, about half of 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 Liberty County's drinking water come from?
By primary water source, Liberty County's active systems draw on groundwater (4, 50%), purchased surface water (3, 38%) and surface water (1, 13%). Overall, 50% rely mainly on groundwater (including purchased groundwater) and 50% 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, Town of Chester, draws primarily on surface water.
What kinds of water systems operate in Liberty County?
Liberty County's active systems break down as 8 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 private (63%) and local government (38%).
Water systems in Liberty County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Chester Town of | Liberty | 870 | Community | Surface water |
| 2 | Sage Creek Co Water District | Liberty | 225 | Community | Groundwater |
| 3 | Ncmrwa Tiber Service Area | Liberty | 200 | Community | Purchased surface water |
| 4 | Sage Creek Colony | Liberty | 130 | Community | Groundwater |
| 5 | Riverview Colony | Liberty | 130 | Community | Purchased surface water |
| 6 | Eagle Creek Colony | Liberty | 125 | Community | Groundwater |
| 7 | Hi-Line Colony | Liberty | 92 | Community | Groundwater |
| 8 | South Chester Water Dist | Liberty | 55 | Community | Purchased surface water |
Liberty County water systems: frequently asked questions
How many public water systems are in Liberty County, Montana?
EPA's SDWIS records file 8 active public water systems under Liberty County, Montana: 8 community systems (100%).
Who supplies drinking water in Liberty County, MT?
The largest community water systems filed under Liberty County are Town of Chester (870 people served), Sage Creek Co Water District (225 people served) and Ncmrwa Tiber Service Area (200 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 Liberty County's drinking water come from groundwater or surface water?
Of the 8 active public water systems in Liberty County, 50% draw mainly on groundwater and 50% on surface water, counting purchased supplies. The largest system, Town of Chester, uses surface water.
Where can I find a water quality report for Liberty 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. 8 community systems are filed under Liberty 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 Liberty 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
- Pondera County· 12 systems
- Blaine County· 12 systems
- Phillips County· 12 systems
- Custer County· 11 systems
- Meagher County· 8 systems
- Judith Basin County· 8 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 Liberty County, Montana”, https://aquacensus.com/water-systems/montana/liberty (data as of October 1, 2026).