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St. Clair County · Plumber / Pipefitter

Plumber / Pipefitter prevailing wage in St. Clair County, Illinois

$75.30an hour, base + fringes · Plumber

$51.00 wage + $24.30 fringe benefits · Building · northwest part

On Illinois public works in St. Clair County, a plumber or pipefitter working as Plumber must be paid at least $75.30 an hour: a $51.00 base wage plus $24.30 in fringe benefits for health and welfare, pension, vacation, training and other insurance. IDOL lists each part but prints no total, so $75.30 is our sum of its columns. Overtime after 8 hours a day, Monday to Friday, is 1.5 times the base wage.

IDOL's St. Clair County schedule, posted October 19, 2026, for work performed on or after October 19, 2026. Checked against labor.illinois.gov on October 24, 2026.

IDOL lists 5 plumber or pipefitter rates for St. Clair County, from $75.22 to $85.68 an hour. See all of them.

This rate covers only the northwest part of St. Clair County. IDOL's wording: “PLUMBERS (NORTHWEST) - Towns of Aloraton, Brooklyn, Cahokia, Caseyville, Centreville, Dupo, East Carondelet, E. St. Louis, Fairview Heights, French Village, National City, O'Fallon, Sauget, and Washington Park.” Rates for the rest of the county are in the table below.

Base wage and fringe: $51.00 + $24.30

The base wage is the taxable hourly wage. The other lines are the fringe benefits IDOL lists for each hour: health and welfare, pension, vacation, training, and "other insurance", which IDOL's legend defines as the "employer hourly cost for any other type(s) of insurance".

Base wage (taxable)	$51.00
Health and welfare	$12.35
Pension	$9.75
Training	$2.20
Base + fringes (our sum; IDOL prints no total)	$75.30

Foreman base wage: $54.00 an hour, with the same fringe benefits.

Overtime

When	Multiple of base
Monday to Friday, after 8 hours a day	1.5× $76.50
Saturday, every hour	1.5× $76.50
Sunday, every hour	2.0× $102.00
Holidays, every hour	2.0× $102.00

IDOL prints a multiple, not a dollar rate. Its legend: “Unless otherwise noted, OT pay is required for any hour greater than 8 worked each day, Mon through Fri. The number listed is the multiple of the base wage.” The figure under each multiple is the base wage times that multiple.

IDOL's schedule also has two columns headed “Add OT 1.5x owed” and “Add OT 2.0x owed”. For this row they read $0.00 and $0.00. IDOL's legend doesn't define them, so ask IDOL (217-782-1710) before you rely on them.

Pricing a bid?

Put this rate on one printable sheet with the other trades on the job.

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Davis-Bacon plumber or pipefitter rate in St. Clair County

Federally funded or assisted construction here uses the U.S. Department of Labor's wage determinations. When a contract requires both the state rate and the Davis-Bacon rate, paying the higher of the two meets both. The contract documents say which apply.

For building work, the matching Davis-Bacon classification is PLUMBER (MADISON (GRANITE CITY & SOUTHERN HALF OF COUNTY) AND ST. CLAIR (EAST ST. LOUIS & VIC.) COUNTIES) at $65.00 ($43.75 base + $21.25 fringe), from IL20260007 modification 2, published May 18, 2026, rate PLUM0360-002. Against IDOL's $75.30: IDOL's rate is $10.30 an hour higher. Note: federal rate covers only part of the county (see federal classification text); state rate is for IDOL region NW of the county.

Construction	Federal classification	Base + fringe	Base	WD
Building, Residential	PLUMBER/PIPEFITTER (ST. CLAIR COUNTY (BELLEVILLE, FAYETTEVILLE, FREESBURG, LEBANON, LENZBERG, MASCOUTAH, MARISSA, MILLSTADT, NEW ATHENS, SCOTT AFB, SHILOH, …PLUM0101-002	$71.17	$47.75	IL20260007 Mod 2
Building, Residential	PLUMBER (MADISON (GRANITE CITY & SOUTHERN HALF OF COUNTY) AND ST. CLAIR (EAST ST. LOUIS & VIC.) COUNTIES)PLUM0360-002	$65.00	$43.75	IL20260007 Mod 2
Building, Residential	STEAMFITTER (MADISON (GRANT CITY AND SOUTHERN HALF OF COUNTY) AND ST. CLAIR (EAST ST. LOUIS AND VIC) COUNTIES)PLUM0439-001	$73.42	$49.00	IL20260007 Mod 2
Building, Residential	SPRINKLER FITTERS (WITHIN A 30 MILE RADIUS OF ST. LOUIS, MO)SFIL0268-001	$85.68	$54.23	IL20260007 Mod 2
Building, Residential	SPRINKLER FITTER (REMAINDER OF COUNTIES)SFIL0669-001	$80.76	$50.51	IL20260007 Mod 2

Davis-Bacon rates from SAM.gov, read October 25, 2026. Our federal totals are base plus fringe; DOL prints no total. Illinois Davis-Bacon changes

Holidays

IDOL's St. Clair County schedule: “The following list is considered as those days for which holiday rates of wages for work performed apply: New Years Day, Memorial Day, Fourth of July, Labor Day, Thanksgiving Day, Christmas Day and Veterans Day in some classifications/counties. Generally, any of these holidays which fall on a Sunday is celebrated on the following Monday. This then makes work performed on that Monday payable at the appropriate overtime rate for holiday pay. Common practice in a given local may alter certain days of celebration. If in doubt, please check with IDOL.”

Holiday work is paid at the holiday multiple in the overtime table (2.0× the base wage for this row).

When this rate changes

Illinois rates don't lock at bid. When IDOL revises a rate, “the revised rate shall apply to such contract” from its effective date, including jobs already under way (820 ILCS 130/4(l)).
A missing notice is no excuse. A public body's failure to send the new rates “does not relieve the contractor of the duty to comply”, or of paying back wages (820 ILCS 130/4(g), (j)).
IDOL surveys in June and must publish the year's schedule by July 15 (820 ILCS 130/9), then posts revisions through the year. In 2026 its postings took effect on Jan 15, Mar 2, Apr 15, May 21, Jul 15, Aug 15, Sep 21 and Oct 19, 2026. Each posting replaces all 102 county schedules.
This page uses the posting for work performed on or after October 19, 2026 (IDOL current rates; older postings are on IDOL's historical rates page).

Every plumber or pipefitter rate in St. Clair County

As IDOL lists them. The highlighted row is the one this page leads with.

Sprinkler FitterBuilding$85.68
PipefitterBuilding · southeast part$75.80
PlumberBuilding · southeast part$75.80
PlumberBuilding · northwest part$75.30
PipefitterBuilding · northwest part$75.22

Total hourly rate of each plumber or pipefitter classification in St. Clair County, highest first, split into wage and fringe benefits.

Trade and class	Base + fringes	Base	Fringes	OT Mon–Fri
PipefitterBuildingnorthwest part PLUMBERS (NORTHWEST) - Towns of Aloraton, Brooklyn, Cahokia, Caseyville, Centreville, Dupo, East Carondelet, E. St. Louis, Fairview Heights, French Village, National City, O'Fallon, Sauget, and Washington Park.	$75.22	$49.00	$26.22	1.5×
PipefitterBuildingsoutheast part PLUMBERS & PIPEFITTERS (SOUTHEAST) - That part of the county bordered by Rt. 50 on the North and West including Belleville.	$75.80	$50.00	$25.80	1.5×
PlumberBuildingnorthwest part PLUMBERS (NORTHWEST) - Towns of Aloraton, Brooklyn, Cahokia, Caseyville, Centreville, Dupo, East Carondelet, E. St. Louis, Fairview Heights, French Village, National City, O'Fallon, Sauget, and Washington Park.	$75.30	$51.00	$24.30	1.5×
PlumberBuildingsoutheast part PLUMBERS & PIPEFITTERS (SOUTHEAST) - That part of the county bordered by Rt. 50 on the North and West including Belleville.	$75.80	$50.00	$25.80	1.5×
Sprinkler FitterBuilding	$85.68	$54.23	$31.45	2.0×

How St. Clair County compares

The main plumber or pipefitter rate in every county that has one, and how the pay splits here and in the nearest counties. All bars use the same scale.

Every county in Illinois

St. Clair $75.305611776215

$69.11Clay$103.02Bureau

St. ClairNearby: Monroe $75.80, Madison $73.06, Clinton $69.11Each column is a group of counties with about the same main rate; its height is how many. 66 counties pay more than St. Clair, 10 the same, 25 less.

Wage and fringe benefits, nearby

St. Clair Countybase $51.00$75.30
Monroe Countybase $50.00$75.80
Madison Countybase $51.61$73.06
Clinton Countybase $47.25$69.11

Plumber / Pipefitter rates in nearby counties

Current IDOL rates. You pay the rate for the county where the work is done. The Act defines “locality” as the county of the physical work, with narrow exceptions (820 ILCS 130/2).

County	Classification	Base + fringes	Base	vs St. Clair County
Monroe County	Plumber (building)	$75.80	$50.00	+$0.50
Randolph County	Plumber (building)	$75.80	$50.00	+$0.50
St. Clair County	Plumber (building)	$75.30	$51.00
Madison County	Plumber (building)	$73.06	$51.61	−$2.24
Bond County	Plumber (building)	$73.06	$51.61	−$2.24
Clinton County	Plumber (building)	$69.11	$47.25	−$6.19
Washington County	Plumber (building)	$69.11	$47.25	−$6.19

Illinois plumber or pipefitter prevailing wage by county, with a map

Regions inside St. Clair County

IDOL's boundary text for this trade, copied from the county's Explanations.

northwest PLUMBERS (NORTHWEST) - Towns of Aloraton, Brooklyn, Cahokia, Caseyville, Centreville, Dupo, East Carondelet, E. St. Louis, Fairview Heights, French Village, National City, O'Fallon, Sauget, and Washington Park.
southeast PLUMBERS & PIPEFITTERS (SOUTHEAST) - That part of the county bordered by Rt. 50 on the North and West including Belleville.

Are you being paid this rate?

Add your base wage to what your employer pays into health, pension and other plans for you, and compare it with $75.30. Your contractor has to post the rates on the job site or give you written notice of them (820 ILCS 130/4(n)), and file a certified payroll with IDOL by the 15th of each month for the month before (820 ILCS 130/5).

A worker paid less than the prevailing rate can sue for the difference (820 ILCS 130/4(g)).

Source

Illinois Department of Labor, prevailing wage rates for St. Clair County, posted October 19, 2026, page 3: labor.illinois.gov/content/dam/soi/en/web/idol/laws-rules/conmed/documents/fy27/20261019/St. Clair.pdf

Each figure is read from IDOL's PDF and checked by a second, separate reader. IDOL prints no total; ours is re-added independently. How we check · Download St. Clair County as CSV · Report an error