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Plumbing Apprenticeships in Iowa

279 registered apprenticeship programs in Iowa train plumbing apprentices. Registered apprenticeships (U.S. Dept of Labor) pay wages from day one — training costs are typically covered by the sponsor instead of tuition. Most run 2–5 years to full journey-level pay, and you apply directly to the sponsor.

Plumbing apprenticeship alerts for Iowa

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Registered programs by city

Des Moines (14)

SponsorProgram type
Bell Brothers Heating and Air Conditioning, Inc. (ABC)Single Employer
DES MOINES HEATING AND COOLING (CEU AUTHORITY)Single Employer
AJ PLUMBING (CEU AUTHORITY)Single Employer
Third Day Plumbing (ABC)Single Employer
Pye-Barker Fire & Safety, LLCSingle Employer
Service LegendsSingle Employer
Iowa Pipe Trades and HVAC Training InstituteMultiple Employer
L.A. FULTON (ABC)Single Employer
Kline Electric Inc. (ABC)Single Employer
CONTRACTORS PLUMBING, INC. (ABC)Single Employer
DRAINTECH INC. (THE CEU AUTHORITY)Single Employer
Torgerson Excavating (PHCC)Single Employer
Iowa Department of CorrectionsSingle Employer
KNIGHT ELECTRIC (ABC)Single Employer

Ames (10)

SponsorProgram type
AKD PLUMBING, LLC (ABC)Single Employer
WATSON PLUMBING, INC. (CEU AUTHORITY)Single Employer
KOVARIK ONSTAT ELITE PLUMBING (ABC)Single Employer
C & K, INC. (CEU)Single Employer
ACI MECHANICAL, INC. (ABC)Single Employer
CONVERSE CONDITIONED AIR (ABC)Single Employer
Ames Plumbing ServiceSingle Employer
C and K Heating & Cooling (PHCC)Single Employer
MECHANICAL COMFORT, INC. (ABC)Single Employer
BETH & KELLY, INC. DBA BENJAMIN FRANKLIN PLUMBING (THE CEU AUTHORITY)Single Employer

Cedar Rapids (9)

SponsorProgram type
Valenta Plumbing (PHCC)Single Employer
Brad Ahearn Plumbing Services (PHCC)Single Employer
Evans Plumbing LLC (PHCC)Single Employer
Master Plumbing, Heating & Cooling (PHCC)Single Employer
Colony Heating & Cooling (PHCC)Single Employer
Plumbers & Pipe Fitters JATC Local Union 125Multiple Employer
Alliant EnergySingle Employer
Strictly Plumbing dba Benjamin Franklin Plumbing (PHCC)Single Employer
Brown Plumbing (PHCC)Single Employer

Council Bluffs (8)

SponsorProgram type
Viper Drain CleaningSingle Employer
A Raymond PlumbingSingle Employer
Perfect PlumbingSingle Employer
Iowa Western Community CollegeMultiple Employer
Driver Plumbing LTDSingle Employer
McIntosh PlumbingSingle Employer
Joshua Bogardus PlumbingSingle Employer
Eledge Plumbing, IncSingle Employer

Dubuque (7)

SponsorProgram type
SERVICE ONE (CEU AUTHORITY)Single Employer
Willenborg Plumbing & Heating Inc.Single Employer
Jaeger Plumbing (PHCC)Single Employer
Miner Plumbing Inc (PHCC)Single Employer
MIT PLUMBING INC (THE CEU AUTHORITY)Single Employer
Titan Mechanical LLCSingle Employer
ALL SEASONS HEATING & COOLING INC. (ABC)Single Employer

Fort Dodge (6)

SponsorProgram type
Ball Plumbing (PHCC)Single Employer
Orres & Galley Plumbing Heating & Air Conditioning (PHCC)Single Employer
RILEY ARMSTRONG PLB & HTG (THE CEU AUTHORITY)Single Employer
Bergman Plumbing Inc (PHCC)Single Employer
L&M Ethanol Maintenance Contracting, Inc.Single Employer
Tru TempSingle Employer

West Des Moines (6)

SponsorProgram type
AM PM PLUMBING (ABC)Single Employer
Molo Companies (PHCC)Single Employer
Evergreen Plumbing, LLC (PHCC)Single Employer
PROCTOR CORPORATION DBA PROCTOR MECHANICAL (ABC)Single Employer
COOK PLUMBING, CORP. (ABC)Single Employer
Holt Plumbing & Heating (PHCC)Single Employer

Boone (5)

SponsorProgram type
J & M HCP (THE CEU AUTHORITY)Single Employer
Duncan Heating & Plumbing (CEU)Single Employer
FAREWAY STORES, INC. (ABC)Single Employer
PRITCHARD BROS (ABC)Single Employer
KRUCK PLUMBING & HEATING CO., INC. (ABC)Single Employer

Urbandale (5)

SponsorProgram type
KADING CONSTRUCTION (ABC)Single Employer
M & P PLUMBING (THE CEU AUTHORITY)Single Employer
THORPE CONTRACTING LLC (ABC)Single Employer
Herr Plumbing Inc (PHCC)Single Employer
Schlievert Plumbing Inc (PHCC)Single Employer

Muscatine (5)

SponsorProgram type
Kirk Butcher Plumbing & Heating (PHCC)Single Employer
Hagerty LLC (ABC)Single Employer
DAN KELLY HEATING & COOLING INC. (ABC)Single Employer
Greenley Plumbing (PHCC)Single Employer
RIVO INC (ABC)Single Employer

Carroll (4)

SponsorProgram type
DREES CO. (THE CEU AUTHORITY)Single Employer
Olsem Plumbing (PHCC)Single Employer
OLSEM PLUMBING & HVAC (THE CEU AUTHORITY)Single Employer
DREES COMPANY (ABC)Single Employer

Marion (4)

SponsorProgram type
Best Plumbing & Bath (PHCC)Single Employer
JP Plumbing & Heating (PHCC)Single Employer
RDW Plumbing (PHCC)Single Employer
Fosters Kraus Mechanical Group Inc (PHCC)Single Employer

Davenport (4)

SponsorProgram type
LYNCH HEATING AND PLUMBING (CEU AUTHORITY)Single Employer
Total Construction Solutions Co. (ABC)Single Employer
Kline Sewer & DrainSingle Employer
HOMETOWN MECHANICAL (ABC)Single Employer

Ankeny (4)

SponsorProgram type
READ PLUMBING, LLC (ABC)Single Employer
Premier Plumbing (CEU)Single Employer
Priority Plumbing (PHCC)Single Employer
72 DEGREES HEATING & COOLING (ABC)Single Employer

Clinton (4)

SponsorProgram type
Hugunin Sewer and Plumbing LLC (PHCC)Single Employer
Dependable Drain and Plumbing Inc (PHCC)Single Employer
Eggers Plumbing Inc (PHCC)Single Employer
ARCHER DANIELS MIDLAND /ADM (CONSTRUCTION)Single Employer

Iowa City (4)

SponsorProgram type
University of Iowa (PHCC)Single Employer
A2Z Heating and Plumbing (PHCC)Single Employer
Bea Day Plumbers (PHCC)Single Employer
Muller Plumbing & Heating (PHCC)Single Employer

Newton (4)

SponsorProgram type
PIPE PROS PLUMBING (ABC)Single Employer
BROOKER CORPORATION (ABC)Single Employer
WARNICK, INC. dba WARNICK MECHANICAL (ABC)Single Employer
BROOKWOOD INC. (ABC)Single Employer

Indianola (4)

SponsorProgram type
QUALITY PLUMBING (CEU AUTHORITY)Single Employer
MILLER ELECTRIC (THE CEU AUTHORITY)Single Employer
Indianola Mechanical LLC (PHCC)Single Employer
Chew Plumbing Company (PHCC)Single Employer

Monticello (3)

SponsorProgram type
WHITE HAWK PLUMBING AND HEATING, LLC (CEU)Single Employer
Monti Plumbing Heating & Electrical (PHCC)Single Employer
SGR Plumbing and Heating Inc (PHCC)Single Employer

Sioux City (3)

SponsorProgram type
Western Iowa Tech Community CollegeMultiple Employer
Western Iowa Technical Community CollegeMultiple Employer
CW SuterSingle Employer

Cedar Falls (3)

SponsorProgram type
Hawkeye Community College (Construction & Logistics)Multiple Employer
Geisler BuildersSingle Employer
Tony's Plumbing & HeatingSingle Employer

Webster City (3)

SponsorProgram type
The Tile Pros Inc (PHCC)Single Employer
STEIN HEATING & COOLING INC (CEU AUTHORITY)Single Employer
K&H CORPORATION (CEU)Single Employer

Marshalltown (3)

SponsorProgram type
WILLIAMS PLUMBING (THE CEU AUTHORITY)Single Employer
B & G HVAC (THE CEU AUTHORITY)Single Employer
KAPAUN & BROWN, INC. (ABC)Single Employer

Ottumwa (3)

SponsorProgram type
A PLUS SERVICE PLUMBING & HVAC, LLV (THE CEU AUTHORITY)Single Employer
J&N ELECTRIC LLC (THE CEU AUTHORITY)Single Employer
D.P. Plumbing Plus, LLCSingle Employer

Pella (3)

SponsorProgram type
Anderson Mechanical Corporation (ABC)Single Employer
DART PLUMBING AND HEATING (THE CEU AUTHORITY)Single Employer
INTEGRITY COMFORT SOLUTIONS, INC. (CEU)Single Employer

Kalona (3)

SponsorProgram type
English River Plumbing (PHCC)Single Employer
J & S Plumbing Heating & Air Conditioning (PHCC)Single Employer
Kuenster Heating & Air (PHCC)Single Employer

Granger (3)

SponsorProgram type
H & H PLUMBING INC (THE CEU AUTHORITY)Single Employer
MANNING-SEIVERT MECHANICAL CONTRACTORS (ABC)Single Employer
Absolute Concrete Construction, Inc. (ABC)Single Employer

Anamosa (3)

SponsorProgram type
Affordable Heating & CoolingSingle Employer
Hinz Plumbing (PHCC)Single Employer
Shaffer Plumbing and Heating, LLC (CEU)Single Employer

Grimes (3)

SponsorProgram type
Rooter Ranger (CEU)Single Employer
LE HUNT ENTERPRISES JR. ENT. INC DBA ROTO ROOTER (THE CEU AUTHORITY)Single Employer
CHAS W GOERING (ABC)Single Employer

Iowa Falls (3)

SponsorProgram type
Barnhart ElectricSingle Employer
Reliable 1 Heating Air Conditioning and Plumbing (PHCC)Single Employer
Mort's Plumbing & Heating (PHCC)Single Employer

Maxwell (2)

SponsorProgram type
Matthews White Plumbing LLC (ABC)Single Employer
Connections Plumbing, LLC (ABC)Single Employer

Mason City (2)

SponsorProgram type
North Central Mechanical Services (ABC)Single Employer
MECHANICAL AIR SYSTEMS COMPANY (ABC)Single Employer

Spencer (2)

SponsorProgram type
Christians Sheetmetal, HVAC, Inc.Single Employer
Midwestern MechanicalSingle Employer

Nevada (2)

SponsorProgram type
ALL-PRO PLUMBING IOWA, LLC (ABC)Single Employer
Wonders PlumbingSingle Employer

Red Oak (2)

SponsorProgram type
ALLENSWORTH HEATING AND COOLING (THE CEU AUTHORITY)Single Employer
JONES MECHANICAL. INC.Single Employer

Washington (2)

SponsorProgram type
4-M PLUMBING AND HEATING (THE CEU AUTHORITY)Single Employer
M & P Mechanical (PHCC)Single Employer

Leon (2)

SponsorProgram type
LEON PLUMBING & HEATING (The CEU Authority)Single Employer
Gilbert Home ComfortSingle Employer

Sheldon (2)

SponsorProgram type
SP HEATING AND COOLING (THE CEU AUTHORITY)Single Employer
Gordon & Zanela Plumbing, Heating & Air LLC (CEU)Single Employer

Orange City (2)

SponsorProgram type
ADVANCED PLUMBING & HEATING, LLC (THE CEU AUTHORITY)Single Employer
D & L PLUMBING & HEATING, INC. (CEU AUTHORITY)Single Employer

Mt Pleasant (2)

SponsorProgram type
JASON SMITH PLUMBING, HEATING AND COOLING (CEU AUTHORITY)Single Employer
CALLAWAY MECHANICAL (CEU AUTHORITY)Single Employer

Esterville (2)

SponsorProgram type
PERKINS PLUMBING (CEU AUTHORITTY)Single Employer
EXCEL PLUMBING & HEATING LLC (CEU AUTHORITY)Single Employer

Walcott (2)

SponsorProgram type
NEEDHAM EXCAVATING, INC. (ABC)Single Employer
Gaither Plumbing LLC (ABC)Single Employer

Oskaloosa (2)

SponsorProgram type
AFFORDABLE SERVICES (CEU AUTHORITY)Single Employer
CUNNINGHAM INC. (ABC)Single Employer

Bondurant (2)

SponsorProgram type
Action Plus Plumbing Heating & Cooling (PHCC)Single Employer
VISION ELECTRIC AND PLUMBING (ABC)Single Employer

West Branch (2)

SponsorProgram type
Lynch's Plumbing (PHCC)Single Employer
Heartland Plumbing LLC (PHCC)Single Employer

Colfax (2)

SponsorProgram type
515 Mechanical LLC (CEU)Single Employer
DICKERSON MECHANICAL, INC (ABC)Single Employer

Okoboji (2)

SponsorProgram type
Dulin Contracting Inc (PHCC)Single Employer
Dulin Contracting (CEU)Single Employer

Clarinda (2)

SponsorProgram type
Frantz & Gray Enterprises, LLC. (The CEU Authority)Single Employer
CRAIG'S PLUMBINGSingle Employer

Waukon (2)

SponsorProgram type
Joe & Matt's Plumbing and HVAC (PHCC)Single Employer
O'Neill Plumbing & Heating, LLC (PHCC)Single Employer

Keokuk (2)

SponsorProgram type
THE PLUMBING COMPANY (THE CEU AUTHORITY)Single Employer
Commercial Contracting Services (ABC)Single Employer

Carlisle (2)

SponsorProgram type
ROBERTS HEATING, COOLING AND PLUMBING (ABC)Single Employer
Dr. Drain dba 1-Tom-Plumber (CEU)Single Employer

Storm Lake (2)

SponsorProgram type
EC Mechanical (PHCC)Single Employer
Hawk-I Plumbing, Inc.Single Employer

Burlington (2)

SponsorProgram type
JD Plumbing (PHCC)Single Employer
BROCKWAY MECHANICAL (ABC)Single Employer

Chariton (2)

SponsorProgram type
Johansen Marts Plumbing & Heating (CEU)Single Employer
HJW Plumbing Co. LLC (CEU)Single Employer

Grinnell (2)

SponsorProgram type
JP Drain Cleaning and Plumbing (ABC)Single Employer
German Plumbing Heating & Cooling (ABC)Single Employer

Eldridge (2)

SponsorProgram type
Apex Plumbing Solutions (ABC)Single Employer
SUPERIOR PLUMBING (ABC)Single Employer

Atlantic (2)

SponsorProgram type
CAMBLIN PLUMBING & HEATING (ABC)Single Employer
CAMBLIN MECHANICAL INC. (ABC)Single Employer

Tama (2)

SponsorProgram type
HARDONS, INC. (ABC)Single Employer
Meskwaki NationSingle Employer

Norwalk (1)

SponsorProgram type
PORTER PLUMBING (ABC)Single Employer

Algona (1)

SponsorProgram type
NORTH IOWA MECHANICAL LLC (CEU)Single Employer

Pleasant Hill (1)

SponsorProgram type
ADVANCED PLUMBING, LLC. (ABC)Single Employer

Sioux Center (1)

SponsorProgram type
WALSTRA PLUMBING & HEATING, INC. (ABC)Single Employer

Harlan (1)

SponsorProgram type
JORGENSEN ENTERPRISES, IN.C. DBA ALPHA & OMEGA (CEU)Single Employer

Cllive (1)

SponsorProgram type
TOTAL COMFORT GROUP (THE CEU AUTHORITY)Single Employer

St. Charles (1)

SponsorProgram type
BEDWELL BUILDERS (THE CEU AUTHORITY)Single Employer

Dyersville (1)

SponsorProgram type
Boge Mechanical Systems LLC (PHCC)Single Employer

Olds (1)

SponsorProgram type
MCCOY PLUMBING AND HEATING (THE CEU AUTHORITY)Single Employer

Hampton (1)

SponsorProgram type
MURPHY'S HEATING & PLUMBING, INC. (CEU AUTHORITY)Single Employer

Johnston (1)

SponsorProgram type
SCHAAL (CEU AUTHORITY)Single Employer

Arnolds Park (1)

SponsorProgram type
TOM'S PLUMBING AND HEATING, LLC (CEU AUTHORITY)Single Employer

Riceville (1)

SponsorProgram type
Pickar-Oulman Plumbing, Heating & Electric, Inc.Single Employer

Elgin (1)

SponsorProgram type
NORTHEAST IOWA MECHANICAL SYSTEMS (THE CEU AUTHORITY)Single Employer

Rock Valley (1)

SponsorProgram type
Rock Valley Plumbing Heating & A/C IncSingle Employer

North Liberty (1)

SponsorProgram type
Beachy Plumbing (PHCC)Single Employer

Inwood (1)

SponsorProgram type
Caswell Plumbing Heating & Air Conditioning LLC (PHCC)Single Employer

Glenwood (1)

SponsorProgram type
Stouder PlumbingSingle Employer

Humbolt (1)

SponsorProgram type
NORTH CENTRAL IOWA SERVICE (CEU AUTHORITY)Single Employer

Manchester (1)

SponsorProgram type
EAGAN MECHANICAL (THE CEU AUTHORITY)Single Employer

Spirit Lake (1)

SponsorProgram type
COMFORTEC INC (THE CEU AUTHORITY)Single Employer

Emmetsburg (1)

SponsorProgram type
BAUER PLUMBING & HEATING (THE CEU AUTHORITY)Single Employer

Osage (1)

SponsorProgram type
ADAMS PLUMBING & HEATING (THE CEU AUTHORITY)Single Employer

Battle Creek (1)

SponsorProgram type
JOHNSON PROPANE HEATING & COOLING (THE CEU AUTHORITY)Single Employer

Fairfield (1)

SponsorProgram type
HAPPYLAND PLUMBING & HEATING LLC (THE CEU AUTHORITY)Single Employer

Laurens (1)

SponsorProgram type
LAURENS PLUMBING INC (THE CEU AUTHORITY)Single Employer

Ossian (1)

SponsorProgram type
REILLY CONSTRUCTION COMPANY INC. (ABC)Single Employer

Earlville (1)

SponsorProgram type
Schuman Heating and Air (PHCC)Single Employer

Peosta (1)

SponsorProgram type
Rosco Plumbing Services LLC (PHCC)Single Employer

Belle Plaine (1)

SponsorProgram type
Ehlen Plumbing & Heating Inc (PHCC)Single Employer

Saint Ansgar (1)

SponsorProgram type
NICKS PLUMBING (THE CEU AUTHORITY)Single Employer

Eldon (1)

SponsorProgram type
Benson Heating & Air Conditioning (PHCC)Single Employer

Sac City (1)

SponsorProgram type
MGM Plumbing Heating and AC (PHCC)Single Employer

Montezuma (1)

SponsorProgram type
EILANDER ENTERPRISES (THE CEU AUTHORITY)Single Employer

Wever (1)

SponsorProgram type
MELLER PLUMBING (THE CEU AUTHORITY)Single Employer

Bellevue (1)

SponsorProgram type
BLASER PLUMBING INC (THE CEU AUTHORITY)Single Employer

Halbur (1)

SponsorProgram type
HALBUR HARDWARE (THE CEU AUTHORITY)Single Employer

Leighton (1)

SponsorProgram type
VANDERLINDEN SERVICE (THE CEU AUTHORITY)Single Employer

Fertile (1)

SponsorProgram type
LARSEN PLUMBING & HEATING, INC. (ABC)Single Employer

Braddyville (1)

SponsorProgram type
Nally Plumbing & Heating (The CEU Authority)Single Employer

Paton (1)

SponsorProgram type
Olson Plumbing & Heating Inc (THE CEU AUTHORITY)Single Employer

Knoxville (1)

SponsorProgram type
DAN'S PLUMBING & HEATING, LLC (CEU)Single Employer

Martelle (1)

SponsorProgram type
Corridor Plumbing LLC (PHCC)Single Employer

Schleswig (1)

SponsorProgram type
Chad's Plumbing Inc. (CEU)Single Employer

Windsor Heights (1)

SponsorProgram type
Scott's Side Work Plus (CEU)Single Employer

Bettendorf (1)

SponsorProgram type
Rilco RR LLC DBA Roto-RooterSingle Employer

Jefferson (1)

SponsorProgram type
Sloan Plumbing and Heating and A/C (CEU)Single Employer

Richland (1)

SponsorProgram type
Hadley Hardware, Inc (PHCC)Single Employer

Greenfield (1)

SponsorProgram type
Feick's Plumbing & Services (CEU)Single Employer

Fort Atkinson (1)

SponsorProgram type
Marv Smith Electric, Plumbing & Heating LLC (PHCC)Single Employer

Patterson (1)

SponsorProgram type
Willow Companies, LLC (ABC)Single Employer

Durant (1)

SponsorProgram type
Ineichen Plumbing (ABC)Single Employer

Polk City (1)

SponsorProgram type
POLK COUNTY HEATING AND COOLING, INC.(ABC)Single Employer

Clive (1)

SponsorProgram type
RHINER'S PLUMBING, HEATING & COOLING. (ABC)Single Employer

Woodward (1)

SponsorProgram type
PLEVA MECHANICAL INC. (ABC)Single Employer

Vail (1)

SponsorProgram type
KASPERBAUER SERVICE, INC. (ABC)Single Employer

Altoona (1)

SponsorProgram type
R&D PLUMBING (THE CEU AUTHORITY)Single Employer

Monroe (1)

SponsorProgram type
VAN RYSWYK PLUMBING AND HEATING (ABC)Single Employer

Carson (1)

SponsorProgram type
Griffen PlumbingSingle Employer

Belmond (1)

SponsorProgram type
KINSETH PLUMBING AND HEATING (ABC)Single Employer

Dallas Center (1)

SponsorProgram type
ELITE ELECT & UTILITY CONTRACTORS DBA LUELLEN BROTHER (ABC)Single Employer

Hospers (1)

SponsorProgram type
Fred's Plumbing and Heating (PHCC)Single Employer

Mount Pleasant (1)

SponsorProgram type
Taft Plumbing Heating Cooling (PHCC)Single Employer

Pocahontas (1)

SponsorProgram type
SEILER APPLIANCE, INC. (ABC)Single Employer

Sutherland (1)

SponsorProgram type
Mark's Plumbing and Heating (PHCC)Single Employer

Shellsburg (1)

SponsorProgram type
Ram Plumbing Service LLC (PHCC)Single Employer

Amana (1)

SponsorProgram type
Oehl Plumbing & Heating (PHCC)Single Employer

Fort Madison (1)

SponsorProgram type
MOHRFELD ELECTRIC (ABC)Single Employer

Fairfax (1)

SponsorProgram type
PROFESSIONAL PLUMBING SERVICES (ABC)Single Employer

Decorah (1)

SponsorProgram type
Casper Plumbing & Heating (PHCC)Single Employer

Prairie City (1)

SponsorProgram type
ROYAL PLUMBING, LLC (ABC)Single Employer

Audubon (1)

SponsorProgram type
REMSBURG SERVICE, INC. (ABC)Single Employer

Coralville (1)

SponsorProgram type
Mulford Plumbing & Heating (PHCC)Single Employer

Williamsburg (1)

SponsorProgram type
Ackerman Plumbing (PHCC)Single Employer

Vinton (1)

SponsorProgram type
Edwards Plumbing & Heating (PHCC)Single Employer

Waterloo (1)

SponsorProgram type
Bergen Plumbing, Heating, & Cooling Inc. (BHSA)Single Employer

Nichols (1)

SponsorProgram type
CHOWN APPLIANCE (ABC)Single Employer

Blue Grass (1)

SponsorProgram type
UNIQUE MECHANICALSingle Employer

Charlotte (1)

SponsorProgram type
CHARLOTTE PLUMBING, HEATING, & A/C (ABC)Single Employer

Centerville (1)

SponsorProgram type
Southern Iowa Heating & Cooling (PHCC)Single Employer

To apply: contact sponsors through apprenticeship.gov or the sponsor's own site. Prefer classroom-first? Compare the 4 plumbing schools in Iowa.

Sponsor data: U.S. Dept of Labor Registered Apprenticeship (apprenticeship.gov), refreshed quarterly; locations reflect DOL registration records. Duplicate registrations and corrections-facility programs are filtered from display. Independent site — not affiliated with the U.S. DOL. About half of states run their own apprenticeship agencies (incl. NY, MN, OR, VT, WA, DC) — federal data undercounts those states, so a low count there does not mean apprenticeships don't exist.