Basin County Water And Sewer Dist, MT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). 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
Basin County Water And Sewer Dist serves about 200 people through 109 service connections, which makes it a very small system under EPA's size classes. It is under mixed public and private ownership and draws groundwater, in Jefferson County, Montana. EPA system ID: MT0000014; phone on file: 406-461-2749. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Basin County Water And Sewer Dist is 3 ppb across 15 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2023 | 1 ppb |
| 2023 | 2 ppb |
| 2022 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2021 | 2 ppb |
| 2019 | 3 ppb |
| 2018 | 0 (not detected) |
| 2017 | 3 ppb |
| 2016 | 0 (not detected) |
| 2016 | 1 ppb |
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. Basin County Water And Sewer Dist's reported as 0 (not detected) sits at the 27th percentile in Montana and the 15th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Jefferson County
13 other systems share Jefferson County; 11 of them have a higher latest lead result than Basin County Water And Sewer Dist. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Whitehall Town Of | 1,500 | 3 ppb |
| Boulder City Of | 1,400 | 0 (not detected) |
| Jefferson Hills Wua | 780 | 1 ppb |
| Saddle Mountain Corp Clancy | 350 | 6 ppb |
| Forest Park Water Users Association | 323 | 15 ppb |
| Blue Sky Heights Wua Clancy | 250 | 0 (not detected) |
| Hangmans Tree Wua | 158 | 4 ppb |
| Stoney Brook Village Condominium Assoc | 142 | 4 ppb |
| Elkhorn Health And Rehabilitation Llc | 89 | 2 ppb |
| Jefferson Tracts Assoc Inc | 80 | 7 ppb |
Next steps for Basin, MT
Look up your address in Basin County Water And Sewer Dist'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 Basin County Water And Sewer Dist whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1760 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.