Ayers Hutterite Colony, 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.
Who runs the water here
Ayers Hutterite Colony serves about 58 people through 19 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Fergus County, Montana. EPA system ID: MT0000413; phone on file: 406-428-2362. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2019 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Ayers Hutterite Colony is 0 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
How Ayers Hutterite Colony 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. Ayers Hutterite Colony's reported as 0 (not detected) sits at the 10th percentile in Montana and the 4th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Fergus County
10 other systems share Fergus County; 1 of them has a higher latest lead result than Ayers Hutterite Colony. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lewistown City Of | 5,923 | 0 (not detected) |
| 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) |
| 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 Ayers Hutterite Colony'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 Ayers Hutterite Colony 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Small systems behave differently: why small systems go over more often.