Lewistown City Of, MT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About Lewistown City Of
Lewistown City Of serves about 5,923 people through 2,906 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 Fergus County, Montana. EPA system ID: MT0000271; phone on file: 406-535-1770. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is down 5 ppb from 5 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Lewistown City Of is 5 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 5 ppb |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
Where this result ranks
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. Lewistown City Of's reported as 0 (not detected) sits at the 38th percentile in Montana and the 35th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
10 other systems share Fergus County; 1 of them has a higher latest lead result than Lewistown City Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mountain Acres Mb Hm Pk | 320 | 0 (not detected) |
| Winifred Town Of | 274 | 0 (not detected) |
| Denton Town Of | 255 | 4 ppb |
| Moore Town Of | 186 | 0 (not detected) |
| Roy Water And Sewer District | 110 | 0 (not detected) |
| Grass Range Town Of | 102 | 0 (not detected) |
| Ayers Hutterite Colony | 58 | 0 (not detected) |
| King Ranch Colony | 56 | 0 (not detected) |
| Deerfield Hutterite Colony | 51 | 0 (not detected) |
| Spring Creek Colony Lewistown | 48 | 0 (not detected) |
What to do in your house
Look up your address in Lewistown City Of's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Lewistown 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. The lead result guide covers how utilities pick the homes they sample. Small systems behave differently: why small systems go over more often.