County · Montana
Gallatin County, Montana: drinking water records
This overview covers 8 ZIP codes and 62 community water systems in Gallatin 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 |
|---|---|---|---|---|---|
| West Yellowstone Town of MT0003136 | 9,899 | 180 | 0 | 1 | 1.3 ppb |
| Bozeman City of MT0000161 | 56,000 | 180 | 0 | 0 | 1.6 ppb |
| Belgrade City of MT0000136 | 10,460 | 420 | 0 | 0 | 1.8 ppb |
| River Rock County Water and Sewer Dist MT0004082 | 4,200 | 60 | 0 | 0 | 3.7 ppb |
| Three Forks City of MT0000343 | 1,900 | 0 | 0 | 1 | 2 ppb |
| Baxter Creek No 2 HOA MT0003323 | 450 | 0 | 0 | 1 | 1.1 ppb |
| Mt Ellis Academy MT0001262 | 106 | 0 | 0 | 2 | 1 ppb |
| Godfrey Canyon Estates MT0002398 | 100 | 0 | 0 | 1 | 1 ppb |
| Home 40 Public Water Supply MT0004960 | 45 | 0 | 0 | 1 | 0.2 ppb |
| Fishermans Village Subdivision MT0004722 | 25 | 0 | 0 | 4 | 0.5 ppb |
| North Star Zoot Water MT0004284 | 4,323 | 0 | 0 | 0 | 3 ppb |
| Rae Water and Sewer Dist 313 MT0000628 | 2,325 | 0 | 0 | 0 | 2.0 ppb |
| Manhattan Town of MT0000285 | 1,800 | 0 | 0 | 0 | 2 ppb |
| Valley Grove Subdivision MT0003780 | 825 | 0 | 0 | 0 | 2.0 ppb |
| Landmark Subdivision MT0004262 | 750 | 0 | 0 | 0 | 0 ppb |
| Elk Grove Water MT0004248 | 672 | 0 | 0 | 0 | 4.4 ppb |
| Genesis Business Park MT0004178 | 670 | 0 | 0 | 0 | 4.3 ppb |
| Covered Wagon Mb Hm Park MT0003810 | 500 | 0 | 0 | 0 | 2.6 ppb |
| Wylie Creek Estates Subdivision MT0003961 | 400 | 0 | 0 | 0 | 2 ppb |
| Firelight Meadows LLC MT0004236 | 350 | 0 | 0 | 0 | 0 ppb |
| Riverside Water and Sewer Dist MT0002173 | 344 | 0 | 0 | 0 | 0.3 ppb |
| Mountain Meadows Estates LLP MT0001791 | 300 | 0 | 0 | 0 | 4 ppb |
| Lexley Acres Mobile Home Park MT0000461 | 250 | 0 | 0 | 0 | 2 ppb |
| Hebgen Lake Estates Co Water Sewer Distr MT0001983 | 230 | 0 | 0 | 0 | 13 ppb |
| Spirit Hills Subdivision MT0004208 | 230 | 0 | 0 | 0 | 1.6 ppb |
ZIP reports in Gallatin 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: 59760.
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.