West Yellowstone Town Of, MT
Lead detected, under the action levels
Latest 90th-percentile lead: 1.25 ppb (monitoring period 2022-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About West Yellowstone Town Of
West Yellowstone Town Of serves about 9,899 people through 704 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Gallatin County, Montana. EPA system ID: MT0003136; phone on file: 406-646-7795. Call that number and ask whether your address has a lead, galvanized or unknown service line.
West Yellowstone Town Of's lead record
Against the period ending 2021 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for West Yellowstone Town Of is 6.73 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.25 ppb |
| 2021 | 1 ppb |
| 2018 | 1.26 ppb |
| 2017 | 3 ppb |
| 2016 | 6.73 ppb |
How West Yellowstone Town Of compares
Of the 753 Montana systems with a lead result, the median latest reading is 1 ppb; 5 are over 15 ppb right now and 28 have gone over at some point. West Yellowstone Town Of's 1.25 ppb sits at the 61st percentile in Montana and the 60th nationally (higher means more lead).
Nearby utilities
59 other systems share Gallatin County; 21 of them have a higher latest lead result than West Yellowstone Town Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Bozeman City Of | 56,000 | 1.6 ppb |
| Belgrade City Of | 10,460 | 1.79 ppb |
| North Star Zoot Water | 4,323 | 3 ppb |
| River Rock County Water And Sewer Dist | 4,200 | 2.81 ppb |
| Rae Water And Sewer Dist 313 | 2,325 | 2.08 ppb |
| Three Forks City Of | 1,900 | 2 ppb |
| Manhattan Town Of | 1,800 | 2 ppb |
| Valley Grove Subdivision | 825 | 2.04 ppb |
| Landmark Subdivision | 750 | 0 (not detected) |
| Elk Grove Water | 672 | 4.38 ppb |
Next steps for West Yellowstone, MT
Test your own tap with a certified lab first-draw sample; West Yellowstone, MT may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask West Yellowstone Town Of whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.