Mountain Shadows Estates Stevensville, MT
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2023-2025). 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 Mountain Shadows Estates Stevensville
Mountain Shadows Estates Stevensville serves about 55 people through 22 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Ravalli County, Montana. EPA system ID: MT0002132; phone on file: 406-214-8285. They can tell you what your service line is made of and whether they pay to replace it.
Mountain Shadows Estates Stevensville's lead record
That is down 2 ppb from 3 ppb in the period ending 2019. The highest 90th-percentile result EPA holds for Mountain Shadows Estates Stevensville is 3 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2019 | 3 ppb |
| 2016 | 0 (not detected) |
How Mountain Shadows Estates Stevensville 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. Mountain Shadows Estates Stevensville's 1 ppb sits at the 45th percentile in Montana and the 51st nationally (higher means more lead).
Other water systems in Ravalli County
22 other systems share Ravalli County; 12 of them have a higher latest lead result than Mountain Shadows Estates Stevensville. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Hamilton City Of | 5,660 | 2 ppb |
| Stevensville Town Of | 2,090 | 0 (not detected) |
| Darby Town Of | 850 | 0 (not detected) |
| Pinesdale Town Of | 800 | 2 ppb |
| Trapper Creek Job Corps | 275 | 6 ppb |
| Kootenai Creek Village | 175 | 1 ppb |
| Stock Farm The | 150 | 2 ppb |
| Daly Estates Subdivision | 123 | 0 (not detected) |
| Wild Flower Hoa The | 120 | 1 ppb |
| Centennial Homeowner'S Association, Inc | 115 | 2 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Missoula, 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 Mountain Shadows Estates Stevensville 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.