Data / Site & infrastructure / Utilities & power
Public water system service areas
600 Montana community water systems. Most boundaries are EPA-modelled from parcels and system size (Modeled: 486, System Sourced: 114).
About this data
- Published by
- U.S. EPA (Office of Water / ORD)
Community Water System Service Area Boundaries - Method
- Downloaded from Community Water System Service Area Boundaries.
- Update frequency
- Irregular
- Last updated
- Oct 6, 2026
- Records
- 600
- Coverage
- 600 Montana community water systems. Most boundaries are EPA-modelled from parcels and system size (Modeled: 486, System Sourced: 114).
Records in 55 of 56 counties. - License
- Public domain
Known gaps
Modelled boundaries are approximate, so ask the system whether a lot can connect. Montana DEQ's own water-system and septic layers block automated access (robots.txt), so they are not included. No statewide sewer service-area map is published. City sewer usually follows the water areas shown here.
Preview
The newest or first 500 records. Click a column heading to sort. Use the filter to find a place or a name.
Fields
| Field | Column | Description |
|---|---|---|
| Pwsid | pwsid | |
| Name | name | |
| Population served | pop | |
| Service connections | conn | |
| Boundary | method | |
| Model | model | |
| Area type | atype | |
| Url | url | |
| Area (km²) | km2 |
Downloads and links
Data 4 MT is an index of public records. It republishes only what Montana and federal agencies make public, with a link to the source on each record. People are shown as “Private individual” on public pages and downloads; companies, trusts held by institutions, and governments keep their names. No document images, sale prices, voter, MVD or wildlife-telemetry data are stored. Verify any record against the publisher’s copy before relying on it.