Seville Colony, MT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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 Seville Colony
Seville Colony serves about 116 people through 10 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Glacier County, Montana. EPA system ID: MT0002974; phone on file: 406-336-2430. 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 2018 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Seville Colony is 0 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2018 | 0 (not detected) |
Against other Montana systems
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. Seville Colony's reported as 0 (not detected) sits at the 21st percentile in Montana and the 11th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
11 other systems share Glacier County; 4 of them have a higher latest lead result than Seville Colony. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Cut Bank City Of | 3,105 | 0 (not detected) |
| St Mary Headquarters And Cg | 1,030 | 10 ppb |
| Cut Bank North Water District | 478 | 2 ppb |
| Glendale Colony | 150 | 3 ppb |
| Horizon Colony | 150 | 0 (not detected) |
| Big Sky Colony Cut Bank | 107 | 0 (not detected) |
| Piegan Border Station | 94 | 0 (not detected) |
| Glacier Colony | 80 | 0 (not detected) |
| Hidden Lake Colony | 80 | 0 (not detected) |
| Zenith Colony | 70 | 0 (not detected) |
What to do in your house
Look up your address in Seville 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 Seville 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. A zero today does not rule out a jump later - the rules are tightening in 2027.