Twin Bridges Town Of, MT
Lead detected, under the action levels
Latest 90th-percentile lead: 2 ppb (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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About Twin Bridges Town Of
Twin Bridges Town Of serves about 424 people through 270 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Madison County, Montana. EPA system ID: MT0000349; phone on file: 406-684-5243. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2018 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Twin Bridges Town Of is 2 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2 ppb |
| 2018 | 1 ppb |
How Twin Bridges Town Of 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. Twin Bridges Town Of's 2 ppb sits at the 72nd percentile in Montana and the 71st nationally (higher means more lead).
Nearby utilities
10 other systems share Madison County; 2 of them have a higher latest lead result than Twin Bridges Town Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Big Sky County Water And Sewer Dist 363 | 4,132 | 4.84 ppb |
| Virginia City Water Dept | 1,500 | 0 (not detected) |
| Ennis Town Of | 1,400 | 0 (not detected) |
| Sheridan Town Of | 632 | 2 ppb |
| Andesite Ridge Water System | 450 | 3 ppb |
| Mt Moonlight Basin | 355 | 0.28 ppb |
| Lower Pioneer Mountain Water System | 350 | 1 ppb |
| Valley Garden Golf Village Hoa | 195 | 1 ppb |
| Encampment Trail | 100 | 0 (not detected) |
| Lone View Ridge Water System | 37 | 1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Twin Bridges, MT may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Twin Bridges Town 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. Size matters more than most people expect: small vs large water systems.