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

There is no single figure. Active federal determinations for Iowa publish 61 plumber classification rates ranging from $14.04 to $46.10 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 Iowa have a published plumber rate?

97 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. Iowa may set its own prevailing wage rates for state and locally funded work; the state law summary is on the Iowa prevailing wage page.

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Plumber prevailing wage rates in Iowa

Federal Davis-Bacon rates published in 60 active determinations, 2026

Active federal Davis-Bacon determinations for Iowa publish 61 plumber classification rates, across 60 determinations covering 97 counties.
Those published base rates run from $14.04 to $46.10 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, Residential.
Last determination revision affecting plumber rates in Iowa: 2026-05-18.

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 Iowa'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

IA20260004 rev 1 · Residential · Appanoose

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$14.04	1.54	SUIA2008-001 DOL wage survey rate

Official document: IA20260004 on SAM.gov.

IA20260005 rev 1 · Residential · Muscatine

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$14.04	1.54	SUIA2008-002 DOL wage survey rate

Official document: IA20260005 on SAM.gov.

IA20260006 rev 1 · Residential · Tama

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$14.04	1.54	SUIA2008-003 DOL wage survey rate

Official document: IA20260006 on SAM.gov.

IA20260007 rev 1 · Residential · Adair, Adams, Audubon, Boone, Carroll, Cass and 14 more

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$14.04	1.54	SUIA2008-004 DOL wage survey rate

Official document: IA20260007 on SAM.gov.

IA20260008 rev 1 · Residential · Allamakee, Buchanan, Butler, Cerro Gordo, Chickasaw, Clayton and 9 more

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$14.04	1.54	SUIA2008-005 DOL wage survey rate

Official document: IA20260008 on SAM.gov.

IA20260009 rev 1 · Residential · Buena Vista, Calhoun, Clay, Hamilton, Hancock, Ida and 6 more

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$14.04	1.54	SUIA2008-006 DOL wage survey rate

Official document: IA20260009 on SAM.gov.

IA20260010 rev 1 · Residential · Cedar, Clinton, Davis, Henry, Iowa, Jackson and 7 more

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$14.04	1.54	SUIA2008-007 DOL wage survey rate

Official document: IA20260010 on SAM.gov.

IA20260011 rev 1 · Residential · Cherokee, Dickinson, Emmet, Humboldt, Kossuth, Lyon and 4 more

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$14.04	1.54	SUIA2008-008 DOL wage survey rate

Official document: IA20260011 on SAM.gov.

IA20260012 rev 1 · Residential · Des Moines, Jasper, Lee, Marion, Marshall, Poweshiek

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$14.04	1.54	SUIA2008-009 DOL wage survey rate

Official document: IA20260012 on SAM.gov.

IA20260029 rev 1 · Building · Adair

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$23.94	10.84	SUIA2016-002 DOL wage survey rate

Official document: IA20260029 on SAM.gov.

IA20260030 rev 1 · Building · Adams

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$23.94	10.84	SUIA2016-003 DOL wage survey rate

Official document: IA20260030 on SAM.gov.

IA20260031 rev 1 · Building · Allamakee

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$25.66	9.61	SUIA2016-004 DOL wage survey rate

Official document: IA20260031 on SAM.gov.

IA20260032 rev 1 · Building · Appanoose

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$31.85	15.12	SUIA2016-005 DOL wage survey rate

Official document: IA20260032 on SAM.gov.

IA20260033 rev 1 · Building · Audubon

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$23.94	10.84	SUIA2016-006 DOL wage survey rate

Official document: IA20260033 on SAM.gov.

IA20260034 rev 1 · Building · Boone

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$23.94	10.84	SUIA2016-007 DOL wage survey rate

Official document: IA20260034 on SAM.gov.

IA20260035 rev 1 · Building · Carroll

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$23.94	10.84	SUIA2016-008 DOL wage survey rate

Official document: IA20260035 on SAM.gov.

IA20260036 rev 1 · Building · Cedar

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$31.85	15.12	SUIA2016-009 DOL wage survey rate

Official document: IA20260036 on SAM.gov.

IA20260037 rev 1 · Building · Cerro Gordo

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$23.95	10.13	SUIA2016-010 DOL wage survey rate

Official document: IA20260037 on SAM.gov.

IA20260038 rev 1 · Building · Clinton

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$46.10	27.05	PLUM0025-006 collectively bargained (union) rate

Official document: IA20260038 on SAM.gov.

IA20260039 rev 2 · Building · Crawford

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER (HVAC Pipe	$45.20	23.25	PLUM0033-001 collectively bargained (union) rate
PLUMBER	$23.94	10.84	SUIA2016-012 DOL wage survey rate

Official document: IA20260039 on SAM.gov.

IA20260040 rev 1 · Building · Davis

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$31.85	15.12	SUIA2016-013 DOL wage survey rate

Official document: IA20260040 on SAM.gov.

IA20260041 rev 1 · Building · Des Moines

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$31.85	15.12	SUIA2016-014 DOL wage survey rate

Official document: IA20260041 on SAM.gov.

IA20260042 rev 1 · Building · Dickinson

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$43.20	23.25	PLUM0033-010 collectively bargained (union) rate

Official document: IA20260042 on SAM.gov.

IA20260043 rev 1 · Building · Floyd

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$25.66	9.61	SUIA2016-016 DOL wage survey rate

Official document: IA20260043 on SAM.gov.

IA20260044 rev 1 · Building · Howard

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$25.66	9.61	SUIA2016-017 DOL wage survey rate

Official document: IA20260044 on SAM.gov.

IA20260045 rev 1 · Building · Iowa

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$31.85	15.12	SUIA2016-018 DOL wage survey rate

Official document: IA20260045 on SAM.gov.

IA20260046 rev 1 · Building · Jasper

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$31.85	15.12	SUIA2016-019 DOL wage survey rate

Official document: IA20260046 on SAM.gov.

IA20260047 rev 1 · Building · Lee

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$31.85	15.12	SUIA2016-020 DOL wage survey rate

Official document: IA20260047 on SAM.gov.

IA20260048 rev 1 · Building · Marion

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$31.85	15.12	SUIA2016-021 DOL wage survey rate

Official document: IA20260048 on SAM.gov.

IA20260049 rev 1 · Building · Marshall

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$31.85	15.12	SUIA2016-022 DOL wage survey rate

Official document: IA20260049 on SAM.gov.

IA20260050 rev 1 · Building · Muscatine

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$31.28	10.86	SUIA2016-023 DOL wage survey rate

Official document: IA20260050 on SAM.gov.

IA20260051 rev 1 · Building · Page

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$23.94	10.84	SUIA2016-024 DOL wage survey rate

Official document: IA20260051 on SAM.gov.

IA20260052 rev 1 · Building · Poweshiek

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$31.85	15.12	SUIA2016-025 DOL wage survey rate

Official document: IA20260052 on SAM.gov.

IA20260053 rev 1 · Building · Sioux

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$43.20	23.25	PLUM0033-010 collectively bargained (union) rate

Official document: IA20260053 on SAM.gov.

IA20260054 rev 1 · Building · Union

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$23.94	10.84	SUIA2016-027 DOL wage survey rate

Official document: IA20260054 on SAM.gov.

IA20260055 rev 1 · Building · Wapello

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$45.20	23.25	PLUM0033-004 collectively bargained (union) rate

Official document: IA20260055 on SAM.gov.

IA20260056 rev 1 · Building · Webster

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$43.20	23.25	PLUM0033-010 collectively bargained (union) rate

Official document: IA20260056 on SAM.gov.

IA20260057 rev 1 · Building · Buena Vista, Calhoun, Cherokee, Clay, Emmet, Hamilton and 13 more

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$43.20	23.25	PLUM0033-010 collectively bargained (union) rate

Official document: IA20260057 on SAM.gov.

IA20260058 rev 1 · Building · Cass, Clarke

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$23.94	10.84	SUIA2016-033 DOL wage survey rate

Official document: IA20260058 on SAM.gov.

IA20260059 rev 1 · Building · Clayton, Delaware

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$25.66	9.61	SUIA2016-034 DOL wage survey rate

Official document: IA20260059 on SAM.gov.

IA20260060 rev 1 · Building · Decatur, Fremont, Greene, Lucas, Monona, Montgomery and 4 more

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$23.94	10.84	SUIA2016-035 DOL wage survey rate

Official document: IA20260060 on SAM.gov.

IA20260061 rev 1 · Building · Henry, Jackson, Jefferson, Keokuk, Louisa, Mahaska and 3 more

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$31.85	15.12	SUIA2016-036 DOL wage survey rate

Official document: IA20260061 on SAM.gov.

IA20260062 rev 1 · Building · Black Hawk

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$25.05	8.97	SUIA2016-037 DOL wage survey rate

Official document: IA20260062 on SAM.gov.

IA20260063 rev 1 · Building · Bremer

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$24.71	8.80	SUIA2016-038 DOL wage survey rate

Official document: IA20260063 on SAM.gov.

IA20260064 rev 1 · Building · Dallas

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$45.20	23.25	PLUM0033-004 collectively bargained (union) rate

Official document: IA20260064 on SAM.gov.

IA20260065 rev 1 · Building · Dubuque

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$43.26	22.07	PLUM0125-005 collectively bargained (union) rate

Official document: IA20260065 on SAM.gov.

IA20260066 rev 1 · Building · Grundy

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$24.71	8.80	SUIA2016-041 DOL wage survey rate

Official document: IA20260066 on SAM.gov.

IA20260067 rev 1 · Building · Harrison

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$45.20	23.25	PLUM0033-028 collectively bargained (union) rate

Official document: IA20260067 on SAM.gov.

IA20260068 rev 1 · Building · Johnson

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$45.51	21.57	PLUM0125-004 collectively bargained (union) rate

Official document: IA20260068 on SAM.gov.

IA20260069 rev 1 · Building · Linn

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$45.51	21.57	PLUM0125-004 collectively bargained (union) rate

Official document: IA20260069 on SAM.gov.

IA20260070 rev 1 · Building · Mills

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$45.20	23.25	PLUM0033-028 collectively bargained (union) rate

Official document: IA20260070 on SAM.gov.

IA20260071 rev 1 · Building · Polk

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$45.20	23.25	PLUM0033-004 collectively bargained (union) rate

Official document: IA20260071 on SAM.gov.

IA20260072 rev 1 · Building · Pottawattamie

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$45.20	23.25	PLUM0033-028 collectively bargained (union) rate

Official document: IA20260072 on SAM.gov.

IA20260073 rev 1 · Building · Scott

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$46.10	27.05	PLUM0025-006 collectively bargained (union) rate

Official document: IA20260073 on SAM.gov.

IA20260074 rev 1 · Building · Story

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$45.20	23.25	PLUM0033-004 collectively bargained (union) rate

Official document: IA20260074 on SAM.gov.

IA20260075 rev 1 · Building · Warren

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$45.20	23.25	PLUM0033-004 collectively bargained (union) rate

Official document: IA20260075 on SAM.gov.

IA20260076 rev 1 · Building · Washington

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$29.11	11.55	SUIA2016-051 DOL wage survey rate

Official document: IA20260076 on SAM.gov.

IA20260077 rev 1 · Building · Woodbury

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$45.20	23.25	PLUM0033-028 collectively bargained (union) rate

Official document: IA20260077 on SAM.gov.

IA20260078 rev 1 · Building · Benton, Jones

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$45.51	21.57	PLUM0125-004 collectively bargained (union) rate

Official document: IA20260078 on SAM.gov.

IA20260080 rev 1 · Building · Buchanan, Butler, Chickasaw, Fayette, Franklin, Hardin and 3 more

Classification as published	Base rate	Fringes	Rate schedule
PLUMBER	$25.66	9.61	SUIA2016-055 DOL wage survey rate

Official document: IA20260080 on SAM.gov.

Where to go next

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

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