Dillon City Of, MT
Lead detected, under the action levels
Latest 90th-percentile lead: 3 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.
Who runs the water here
Dillon City Of serves about 4,300 people through 1,920 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 Beaverhead County, Montana. EPA system ID: MT0000201; phone on file: 406-683-4245. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2021 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Dillon City Of is 3 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 3 ppb |
| 2021 | 2 ppb |
| 2018 | 2 ppb |
How Dillon City 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. Dillon City Of's 3 ppb sits at the 86th percentile in Montana and the 82nd nationally (higher means more lead).
Other water systems in Beaverhead County
8 other systems share Beaverhead County; 2 of them have a higher latest lead result than Dillon City Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Keller Subdivision No 2 Hoa | 300 | 2 ppb |
| Hildreth Subdivision No 2 | 300 | 3 ppb |
| Lima Town Of | 279 | 0 (not detected) |
| Hildreth Subdivision No 3 | 128 | 0 (not detected) |
| Western Mobile Village Dillon | 75 | 4 ppb |
| Skyline Tr Ct And Rv Park | 75 | 2 ppb |
| Clarks Lookout | 62 | 0 (not detected) |
| Beaverhead Jackson Water And Sewer Dist | 58 | 7 ppb |
Next steps for Dillon, MT
Test your own tap with a certified lab first-draw sample; Dillon, 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 Dillon City 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.