Lead pipes in Montana
Montana's 850 community water systems reported 482 lead and 2,764 galvanized-requiring-replacement service lines, plus 71,508 of unknown material. That ranks #39 among states for confirmed lead lines.
- Lead 0.2%
- Galvanized (replace) 1.0%
- Unknown 25%
- Non-lead 74%
1.1% of the service lines Montana utilities reported are lead or galvanized requiring replacement, well below the national share of 3.1%. 25% are still unidentified (national: 21%). The largest counts are in City of Great Falls (738), Butte Silverbow Water Dept (556), City of Livingston (170). 60 systems haven't reported counts yet.
Since 2025 Q1, reported lead and galvanized lines in Montana went from 2,220 to 3,246 (up 1,026). See which systems made the most progress.
Systems with confirmed lead lines (87)
No confirmed lead, but unknown lines remain (180)
Showing 50. See all
No lead or unknown lines reported (29)
Systems serving 1,000 or more people. Systems without counts on file are listed as 0.
Lead pipes in Montana cities
- Billingsno lead reported
- Missoulano lead reported
- Great Falls738 lead + galv. lines
- Bozeman3 lead + galv. lines
- Butte-Silver Bow556 lead + galv. lines
- Helena214 unknown
- Kalispell54 lead + galv. lines
- Belgrade25 lead + galv. lines
- Whitefish1,874 unknown
- Havre140 lead + galv. lines
- Livingston170 lead + galv. lines
- Laurel9 lead + galv. lines
- Sidney1 lead + galv. lines
- Columbia Falls7 unknown
- Hamilton69 lead + galv. lines
- Glendive2 lead + galv. lines
- Dillon4 lead + galv. lines
- Hardin29 lead + galv. lines
- Shelby7 lead + galv. lines
- Libby3 unknown
- Deer Lodge10 lead + galv. lines
- Red Lodge42 lead + galv. lines
- Wolf Point26 lead + galv. lines
- East Helena13 lead + galv. lines
- Townsend8 lead + galv. lines
- Ronan463 unknown
- Baker1 lead + galv. lines
- Thompson Falls8 lead + galv. lines
- West Yellowstone59 unknown
Montana lead pipe questions
How many lead pipes are in Montana?
Montana's community water systems reported 482 lead service lines and 2,764 galvanized lines that must be replaced, for 3,246 in total. Another 71,508 lines are of unknown material.
Which Montana water systems have the most lead pipes?
City of Great Falls (738), Butte Silverbow Water Dept (556), City of Livingston (170). Counts are lead plus galvanized-requiring-replacement lines.
What share of Montana service lines are lead?
1.1% of reported service lines in Montana are lead or galvanized requiring replacement, well below the national figure of 3.1%. 25% are still unknown, compared with 21% nationally.
How do I find out if my Montana home has a lead service line?
Search for your water system or ZIP code above, then open your utility's address-level inventory map. You can also check the pipe where it enters your home with a scratch and magnet test.
Source: EPA SDWIS service line inventory, 2026 Q3. Smaller systems with no lead or unknown lines are omitted. See also national rankings.