Piegan Border Station, MT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2025-2027). 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
Piegan Border Station serves about 94 people through 21 service connections, which makes it a very small system under EPA's size classes. It is federally owned and draws surface water, in Glacier County, Montana. EPA system ID: MT0003334; phone on file: 406-431-3388. They can tell you what your service line is made of and whether they pay to replace it.
Piegan Border Station's lead record
That is down 6 ppb from 6 ppb in the period ending 2026. The highest 90th-percentile result EPA holds for Piegan Border Station is 8 ppb across 10 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2027 | 0 (not detected) |
| 2026 | 6 ppb |
| 2024 | 2 ppb |
| 2023 | 7 ppb |
| 2022 | 3 ppb |
| 2021 | 3 ppb |
| 2019 | 4 ppb |
| 2018 | 8 ppb |
| 2017 | 6 ppb |
| 2016 | 3 ppb |
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. Piegan Border Station's reported as 0 (not detected) sits at the 18th percentile in Montana and the 9th 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 Piegan Border Station. 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) |
| Seville Colony | 116 | 0 (not detected) |
| Big Sky Colony Cut Bank | 107 | 0 (not detected) |
| Glacier Colony | 80 | 0 (not detected) |
| Hidden Lake Colony | 80 | 0 (not detected) |
| Zenith Colony | 70 | 0 (not detected) |
Your move
Look up your address in Piegan Border Station'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 Piegan Border Station whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1400 ppb (copper action level 1,300 ppb).
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.