County · Montana
Sanders County, Montana: drinking water records
This overview covers 9 ZIP codes and 12 community water systems in Sanders County. It also stands in for 1 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Woodside Park County Water and Sewer Dis MT0002986 | 115 | 0 | 0 | 1 | 1 ppb |
| Thompson Falls City of MT0000341 | 1,950 | 0 | 0 | 0 | 0 ppb |
| Plains Town of MT0000305 | 1,700 | 0 | 0 | 0 | 2 ppb |
| Hot Springs Municipal Water MT0000251 | 600 | 0 | 0 | 0 | 0 ppb |
| Water Service INC Trout Creek MT0000347 | 350 | 0 | 0 | 0 | 0 ppb |
| Noxon Water District MT0000299 | 330 | 0 | 0 | 0 | 0 ppb |
| Salish Shores Trade Winds Comm Village MT0003911 | 215 | 0 | 0 | 0 | 0 ppb |
| Paradise Water District MT0000385 | 200 | 0 | 0 | 0 | 6 ppb |
| Heron Community Water System MT0000247 | 84 | 0 | 0 | 0 | 2 ppb |
| Clear View Academy MT0004536 | 70 | 0 | 0 | 0 | 1 ppb |
| North Shore Estates HOA MT0003556 | 65 | 0 | 0 | 0 | 0 ppb |
| Avista Utilities Noxon Rapids Dam MT0000300 | 43 | 0 | 0 | 0 | 2 ppb |
ZIP reports in Sanders County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 59848.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.