Golden Valley County, Montana — public water systems
At a glance
4 active public water systems are filed under Golden Valley County, Montana in EPA's SDWIS records, together reporting 514 people served. The largest is Town of Ryegate, which reports serving 270 people. 2 are community water systems serving people where they live; the other 2 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
4
Population served
514
Community systems
2
Groundwater share
75%
How does Golden Valley County compare with other Montana counties?
Golden Valley County has the 52nd-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 514 people served in total, the 57th-largest county figure in the state and less than 0.1% of the statewide total. The average system here reports serving 129 people, well below 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 Golden Valley County's drinking water come from?
By primary water source, Golden Valley County's active systems draw on groundwater (3, 75%) and purchased surface water (1, 25%). Overall, 75% rely mainly on groundwater (including purchased groundwater) and 25% 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 Ryegate, draws primarily on groundwater.
What kinds of water systems operate in Golden Valley County?
Golden Valley County's active systems break down as 2 community systems (50%), 1 non-transient non-community systems (25%) and 1 transient non-community systems (25%). 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. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. 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. EPA lists their owner types as local government (50%) and private (50%).
Water systems in Golden Valley County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Ryegate Town of | Golden Valley | 270 | Community | Groundwater |
| 2 | Golden Valley Colony | Golden Valley | 100 | Community | Groundwater |
| 3 | Lavina School District | Golden Valley | 94 | Non-transient non-community | Groundwater |
| 4 | Cozy Corner Bar | Golden Valley | 50 | Transient non-community | Purchased surface water |
Golden Valley County water systems: frequently asked questions
How many public water systems are in Golden Valley County, Montana?
EPA's SDWIS records file 4 active public water systems under Golden Valley County, Montana: 2 community systems (50%), 1 non-transient non-community systems (25%) and 1 transient non-community systems (25%).
Who supplies drinking water in Golden Valley County, MT?
The largest community water systems filed under Golden Valley County are Town of Ryegate (270 people served) and Golden Valley Colony (100 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 Golden Valley County's drinking water come from groundwater or surface water?
Of the 4 active public water systems in Golden Valley County, 75% draw mainly on groundwater and 25% on surface water, counting purchased supplies. The largest system, Town of Ryegate, uses groundwater.
Where can I find a water quality report for Golden Valley 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. 2 community systems are filed under Golden Valley 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 Golden Valley 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
- Garfield County· 6 systems
- Carter County· 5 systems
- Roosevelt County· 4 systems
- Fallon County· 4 systems
- Powder River County· 3 systems
- Treasure 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 Golden Valley County, Montana”, https://aquacensus.com/water-systems/montana/golden-valley (data as of October 1, 2026).