What is the Davis-Bacon prevailing wage for a plumber in Montana?

There is no single figure. Active federal determinations for Montana publish 78 plumber classification rates ranging from $7.70 to $46.45 per hour before fringe benefits. The rate that applies depends on the county, the type of construction and the wage determination incorporated into the contract.

How many counties in Montana have a published plumber rate?

57 of the counties covered by active federal determinations list at least one plumber classification.

Do these rates apply to state-funded projects?

No. These are federal Davis-Bacon rates, which apply to federally funded or assisted construction. Montana may set its own prevailing wage rates for state and locally funded work; the state law summary is on the Montana prevailing wage page.

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Plumber prevailing wage rates in Montana

Federal Davis-Bacon rates published in 67 active determinations, 2026

Active federal Davis-Bacon determinations for Montana publish 78 plumber classification rates, across 67 determinations covering 57 counties.
Those published base rates run from $7.70 to $46.45 an hour before fringe benefits. Which one applies to a job depends on its county, its construction type and the determination written into the contract.
Construction types covered: Building, Heavy, Residential.
Last determination revision affecting plumber rates in Montana: 2026-07-30.

The official source: binding Davis-Bacon and Service Contract Act wage determinations are published by the U.S. Department of Labor at SAM.gov Wage Determinations. This site indexes them and links every determination to its official document - the determination incorporated into a contract governs.

This page collects every classification in Montana's active federal determinations that is a form of plumber work (potable water, waste and gas piping) and shows the rate published for it. Determinations name a classification the way the underlying union agreement or wage survey named it, so the wording varies between them; the rate and the fringe are reproduced exactly as published.

Published rates by determination

MT20260001 rev 1 · Residential · Lewis And Clark

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$12.75	1.65	SUMT1990-003 DOL wage survey rate

Official document: MT20260001 on SAM.gov.

MT20260002 rev 1 · Residential · Granite, Powell

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$12.75	1.65	SUMT1992-005 DOL wage survey rate

Official document: MT20260002 on SAM.gov.

MT20260003 rev 1 · Residential · Hill

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$16.20	2.17	SUMT1992-008 DOL wage survey rate

Official document: MT20260003 on SAM.gov.

MT20260004 rev 1 · Residential · Lake, Mineral, Sanders

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$8.33	0.00	SUMT1992-006 DOL wage survey rate

Official document: MT20260004 on SAM.gov.

MT20260005 rev 1 · Residential · Missoula

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$15.78	1.60	SUMT1992-009 DOL wage survey rate

Official document: MT20260005 on SAM.gov.

MT20260006 rev 1 · Residential · Musselshell, Rosebud, Treasure

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$12.70	2.00	SUMT1992-004 DOL wage survey rate

Official document: MT20260006 on SAM.gov.

MT20260007 rev 1 · Residential · Roosevelt

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$12.60	1.99	SUMT1990-001 DOL wage survey rate

Official document: MT20260007 on SAM.gov.

MT20260008 rev 1 · Residential · Roosevelt

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$12.61	1.96	SUMT1992-003 DOL wage survey rate

Official document: MT20260008 on SAM.gov.

MT20260009 rev 1 · Residential · Silver Bow

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$16.45	1.95	SUMT1992-010 DOL wage survey rate

Official document: MT20260009 on SAM.gov.

MT20260010 rev 1 · Residential · Valley

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$16.20	2.17	SUMT1992-011 DOL wage survey rate

Official document: MT20260010 on SAM.gov.

MT20260011 rev 1 · Residential · Yellowstone

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$14.20	2.00	SUMT1992-002 DOL wage survey rate

Official document: MT20260011 on SAM.gov.

MT20260012 rev 1 · Residential · Glacier

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$16.20	2.17	SUMT1992-007 DOL wage survey rate

Official document: MT20260012 on SAM.gov.

MT20260013 rev 1 · Residential · Beaverhead, Ravalli

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$10.65	1.25	SUMT1992-022 DOL wage survey rate

Official document: MT20260013 on SAM.gov.

MT20260014 rev 1 · Residential · Big Horn

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$12.70	2.00	SUMT1992-013 DOL wage survey rate

Official document: MT20260014 on SAM.gov.

MT20260015 rev 1 · Residential · Blaine, Petroleum, Phillips

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$13.85	2.00	SUMT1992-016 DOL wage survey rate

Official document: MT20260015 on SAM.gov.

MT20260016 rev 1 · Residential · Broadwater, Jefferson, Madison, Meagher

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$11.70	1.45	SUMT1990-002 DOL wage survey rate

Official document: MT20260016 on SAM.gov.

MT20260017 rev 1 · Residential · Carbon, Park, Stillwater, Sweet Grass

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$10.65	1.25	SUMT1992-017 DOL wage survey rate

Official document: MT20260017 on SAM.gov.

MT20260018 rev 1 · Residential · Cascade

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$16.20	2.17	SUMT1992-019 DOL wage survey rate

Official document: MT20260018 on SAM.gov.

MT20260019 rev 1 · Residential · Carter, Custer, Daniels, Dawson, Fallon, Garfield and 6 more

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$7.70	0.00	SUMT1992-014 DOL wage survey rate

Official document: MT20260019 on SAM.gov.

MT20260020 rev 1 · Residential · Chouteau, Judith Basin, Liberty, Pondera, Teton, Toole

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$11.60	1.71	SUMT1992-018 DOL wage survey rate

Official document: MT20260020 on SAM.gov.

MT20260021 rev 1 · Residential · Deer Lodge

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$16.45	1.95	SUMT1992-020 DOL wage survey rate

Official document: MT20260021 on SAM.gov.

MT20260022 rev 1 · Residential · Flathead, Lincoln

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$15.78	2.60	SUMT1992-012 DOL wage survey rate

Official document: MT20260022 on SAM.gov.

MT20260023 rev 1 · Residential · Fergus, Golden Valley, Wheatland

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$13.85	2.00	SUMT1992-015 DOL wage survey rate

Official document: MT20260023 on SAM.gov.

MT20260025 rev 1 · Building · Beaverhead

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$46.45	19.92	PLUM0041-008 collectively bargained (union) rate

Official document: MT20260025 on SAM.gov.

MT20260026 rev 1 · Building · Blaine

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, EXCLUDES HVAC PIPE INSTALLATION	$26.34	10.30	SUMT2011-002 DOL wage survey rate
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-002 DOL wage survey rate

Official document: MT20260026 on SAM.gov.

MT20260027 rev 1 · Building · Broadwater

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$46.45	19.92	PLUM0041-008 collectively bargained (union) rate

Official document: MT20260027 on SAM.gov.

MT20260028 rev 1 · Building · Daniels

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-004 DOL wage survey rate

Official document: MT20260028 on SAM.gov.

MT20260029 rev 1 · Building · Dawson

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, EXCLUDES HVAC PIPE INSTALLATION	$41.00	20.47	PLUM0030-011 collectively bargained (union) rate
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-005 DOL wage survey rate

Official document: MT20260029 on SAM.gov.

MT20260030 rev 1 · Building · Deer Lodge

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$46.45	19.92	PLUM0041-008 collectively bargained (union) rate

Official document: MT20260030 on SAM.gov.

MT20260031 rev 1 · Building · Fergus

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, EXCLUDES HVAC PIPE INSTALLATION	$26.34	10.30	SUMT2011-007 DOL wage survey rate
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-007 DOL wage survey rate

Official document: MT20260031 on SAM.gov.

MT20260032 rev 2 · Building · Flathead

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$36.13	15.98	PLUM0459-007 collectively bargained (union) rate

Official document: MT20260032 on SAM.gov.

MT20260033 rev 1 · Building · Gallatin

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$46.45	19.92	PLUM0041-008 collectively bargained (union) rate

Official document: MT20260033 on SAM.gov.

MT20260034 rev 2 · Building · Glacier

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, EXCLUDES HVAC PIPE INSTALLATION	$26.34	10.30	SUMT2011-010 DOL wage survey rate
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-010 DOL wage survey rate

Official document: MT20260034 on SAM.gov.

MT20260035 rev 1 · Building · Golden Valley

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, EXCLUDES HVAC PIPE INSTALLATION	$26.34	10.30	SUMT2011-011 DOL wage survey rate
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-011 DOL wage survey rate

Official document: MT20260035 on SAM.gov.

MT20260036 rev 1 · Building · Granite

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$46.45	19.92	PLUM0041-008 collectively bargained (union) rate

Official document: MT20260036 on SAM.gov.

MT20260037 rev 1 · Building · Hill

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, EXCLUDES HVAC PIPE INSTALLATION	$26.34	10.30	SUMT2011-013 DOL wage survey rate
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-013 DOL wage survey rate

Official document: MT20260037 on SAM.gov.

MT20260038 rev 1 · Building · Jefferson

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$46.45	19.92	PLUM0041-008 collectively bargained (union) rate

Official document: MT20260038 on SAM.gov.

MT20260039 rev 2 · Building · Lake

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$36.13	15.98	PLUM0459-007 collectively bargained (union) rate

Official document: MT20260039 on SAM.gov.

MT20260040 rev 1 · Building · Lewis And Clark

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$46.45	19.92	PLUM0041-008 collectively bargained (union) rate

Official document: MT20260040 on SAM.gov.

MT20260041 rev 2 · Building · Lincoln

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$36.13	15.98	PLUM0459-007 collectively bargained (union) rate

Official document: MT20260041 on SAM.gov.

MT20260042 rev 1 · Building · Madison

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER (INCLUDING HVAC PIPE INSTALLATION)	$46.45	19.92	PLUM0041-006 collectively bargained (union) rate

Official document: MT20260042 on SAM.gov.

MT20260043 rev 1 · Building · McCone

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-019 DOL wage survey rate

Official document: MT20260043 on SAM.gov.

MT20260044 rev 2 · Building · Mineral

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$36.13	15.98	PLUM0459-007 collectively bargained (union) rate

Official document: MT20260044 on SAM.gov.

MT20260045 rev 1 · Building · Park

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$46.45	19.92	PLUM0041-008 collectively bargained (union) rate

Official document: MT20260045 on SAM.gov.

MT20260046 rev 1 · Building · Petroleum

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, EXCLUDES HVAC PIPE INSTALLATION	$25.75	10.87	SUMT2011-022 DOL wage survey rate
PLUMBER (HVAC PIPE INSTALLATION)	$26.34	10.30	SUMT2011-022 DOL wage survey rate

Official document: MT20260046 on SAM.gov.

MT20260047 rev 1 · Building · Pondera

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, EXCLUDES HVAC PIPE INSTALLATION	$26.34	10.30	SUMT2011-023 DOL wage survey rate
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-023 DOL wage survey rate

Official document: MT20260047 on SAM.gov.

MT20260048 rev 2 · Building · Powell

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$42.80	17.28	PLUM0459-009 collectively bargained (union) rate

Official document: MT20260048 on SAM.gov.

MT20260049 rev 1 · Building · Richland

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-025 DOL wage survey rate

Official document: MT20260049 on SAM.gov.

MT20260050 rev 1 · Building · Roosevelt

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-026 DOL wage survey rate

Official document: MT20260050 on SAM.gov.

MT20260051 rev 1 · Building · Sheridan

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-027 DOL wage survey rate

Official document: MT20260051 on SAM.gov.

MT20260052 rev 1 · Building · Silver Bow

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$46.45	19.92	PLUM0041-008 collectively bargained (union) rate

Official document: MT20260052 on SAM.gov.

MT20260053 rev 1 · Building · Stillwater

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, EXCLUDES HVAC PIPE INSTALLATION	$26.34	10.30	SUMT2011-029 DOL wage survey rate
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-029 DOL wage survey rate

Official document: MT20260053 on SAM.gov.

MT20260054 rev 1 · Building · Treasure

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-030 DOL wage survey rate

Official document: MT20260054 on SAM.gov.

MT20260055 rev 1 · Building · Wibaux

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-031 DOL wage survey rate

Official document: MT20260055 on SAM.gov.

MT20260056 rev 1 · Building · Big Horn, Prairie

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-032 DOL wage survey rate

Official document: MT20260056 on SAM.gov.

MT20260057 rev 1 · Building · Carter, Custer, Fallon, Garfield, Phillips, Powder River and 2 more

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, EXCLUDES HVAC PIPE INSTALLATION (CARTER, CUSTER, FALLON, GARFIELD, POWDER RIVER, AND ROSEBUD COUNTIES)	$41.00	20.47	PLUM0030-006 collectively bargained (union) rate
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-033 DOL wage survey rate

Official document: MT20260057 on SAM.gov.

MT20260058 rev 1 · Building · Chouteau, Judith Basin, Liberty, Musselshell, Sweet Grass, Teton and 2 more

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, EXCLUDES HVAC PIPE INSTALLATION	$26.34	10.30	SUMT2011-034 DOL wage survey rate
PLUMBER (HVAC PIPE INSTALLATION)	$25.75	10.87	SUMT2011-034 DOL wage survey rate

Official document: MT20260058 on SAM.gov.

MT20260059 rev 1 · Building · Meagher, Yellowstone National Park

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$46.45	19.92	PLUM0041-008 collectively bargained (union) rate

Official document: MT20260059 on SAM.gov.

MT20260060 rev 2 · Building · Ravalli, Sanders

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$36.13	15.98	PLUM0459-007 collectively bargained (union) rate

Official document: MT20260060 on SAM.gov.

MT20260061 rev 1 · Building · Carbon

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$41.00	20.47	PLUM0030-012 collectively bargained (union) rate

Official document: MT20260061 on SAM.gov.

MT20260062 rev 2 · Building · Cascade

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$46.45	19.92	PLUM0041-013 collectively bargained (union) rate

Official document: MT20260062 on SAM.gov.

MT20260063 rev 2 · Building · Missoula

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$42.80	17.28	PLUM0459-006 collectively bargained (union) rate

Official document: MT20260063 on SAM.gov.

MT20260064 rev 1 · Building · Yellowstone

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER, INCLUDES HVAC PIPE INSTALLATION	$41.00	20.47	PLUM0030-013 collectively bargained (union) rate

Official document: MT20260064 on SAM.gov.

MT20260065 rev 1 · Heavy · Carbon

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$41.21	21.01	PLUM0030-014 collectively bargained (union) rate

Official document: MT20260065 on SAM.gov.

MT20260066 rev 1 · Heavy · Cascade

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$46.45	19.92	PLUM0041-014 collectively bargained (union) rate

Official document: MT20260066 on SAM.gov.

MT20260067 rev 2 · Heavy · Missoula

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$39.38	16.23	PLUM0459-010 collectively bargained (union) rate

Official document: MT20260067 on SAM.gov.

MT20260068 rev 1 · Heavy · Yellowstone

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$41.21	21.01	PLUM0030-014 collectively bargained (union) rate

Official document: MT20260068 on SAM.gov.

Where to go next

Plumber rates in every state · Montana prevailing wage and state law · Montana determinations by county · pay calculator

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