The 10 Best Plumbing Companies in Montana — 2026

We compared all 155 plumbing companies in Montana on the data that matters: services offered, posted hours, and how easy each one is to reach. No pay-to-play — this ranking comes straight from the listings data, updated November 2026.

#1 · R & R Pump CoHelena

(406) 442-0661 Website View listing

#2 · Lockmer Plumbing, Heating & Utilities, Inc.Butte

(406) 782-2224 Website View listing

#3 · Western Plumbing BZNBozeman

(406) 586-6000 Website View listing

#4 · Montana City Plumbing and HeatingMontana City

(406) 449-2400 Website View listing

#5 · Montana PlumbingSeeley Lake

(202) 555-1416 Website View listing

#6 · Carp's Drain Cleaning-septicGreat Falls Drain service

(406) 452-8990 Website View listing

#7 · Diamond Plumbing & HeatingKalispell

(406) 257-5145 Website View listing

#8 · Precision Plumbing & Heating IncBillings

(406) 655-9240 Website View listing

#9 · A-Team PlumbingDarby

(406) 241-6658 Website View listing

#10 · AAA Plumbing & HeatingHuson

(406) 728-3131 Website View listing

Run one of these businesses? You earned this spot — email contact@plumbingatlas.com for your free “Top Plumbing Companies in Montana” badge to put on your site, and we’ll make sure your listing stays accurate.
How we rank: every listing earns points for listed services (drain service, water heaters, sewer service, emergency service), posted hours, and working contact details. The ranking is recalculated with every data update.