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Expert Plumbing Contractors in Iowa
Plumbers and Steamfitters Local Union 33 has served the plumbing and mechanical construction industry for over 130 years, delivering skilled craftsmanship across central and western Iowa. Our workforce of 1,950 trained professionals specializes in multi-family housing, commercial and industrial facilities, and process piping projects. We prioritize safety, efficiency, and quality, ensuring projects meet deadlines and exceed industry standards. Contractors in our jurisdiction benefit from reliable manpower for plumbing, HVAC, medical gas, and water treatment systems.

With a legacy dating to 1891, we combine historical expertise with modern techniques to address evolving industry demands. Our apprenticeship programs and partnerships with the United Association ensure continuous skill development and innovation. We advocate for fair wages, healthcare, and retirement security while fostering career growth for tradespeople. Our commitment to excellence has made us a trusted partner for infrastructure development in Iowa communities.
Services
Plumbing Services HVAC Installation Medical Gas Systems Process Piping Welding Services
Highlights and features
  • We offer 130+ years of expertise in plumbing and mechanical construction.
  • Our workforce includes 1,950 trained plumbers, welders, and HVAC technicians.
  • We serve central and western Iowa with reliable project execution.
  • We provide manpower for specialized systems like medical gas and water treatment.
  • Our apprenticeship programs ensure continuous skill development and innovation.
Services
Plumbing Services
Our certified plumbers install and maintain residential, commercial, and industrial plumbing systems with precision and code compliance. We handle water distribution, drainage, and fixture installations for new construction and renovations. Our team ensures efficient system performance while adhering to safety standards and project timelines.
HVAC Installation
We specialize in heating, ventilation, and air conditioning systems for buildings of all sizes. Our technicians install energy-efficient HVAC units and maintain optimal indoor climate conditions through regular servicing. We work with modern systems including geothermal and smart thermostat technologies.
Medical Gas Systems
Our experts design and install specialized gas piping systems for healthcare facilities, including oxygen, nitrogen, and vacuum systems. We follow strict NFPA 99 standards for medical gas pipeline integrity and safety. Regular maintenance ensures continuous, reliable operation in critical care environments.
Process Piping
We construct complex piping networks for industrial facilities handling chemicals, water treatment, and manufacturing processes. Our welders meet ASME B31.1 and B31.3 standards for high-purity piping systems. We ensure leak-free performance under extreme temperatures and pressures.
Welding Services
Our certified welders perform structural and pipe welding for construction and repair projects. We use TIG, MIG, and stick welding techniques on carbon steel, stainless steel, and aluminum. Quality control includes X-ray and ultrasonic testing for critical joints in industrial applications.
People
Jama Barbour
Chief Operating Officer
Jama Barbour oversees daily operations and strategic initiatives for Local Union 33. With decades of experience in labor relations and construction management, she ensures efficient service delivery and member support.
Jamie Smith
Fund Office Supervisor
Jamie Smith manages fund office operations, coordinating benefits administration and employer reporting. He brings extensive knowledge of union financial systems and pension fund management to support members' long-term security.
Jordyn Cox
Benefits Analyst
Jordyn Cox assists members with health and retirement benefits, providing expert guidance on claims processing and coverage options. Her focus on personalized service ensures members maximize their union-provided benefits.
Zach Hester
Benefits Analyst
Zach Hester supports members with pension and healthcare inquiries, leveraging his expertise in benefits administration to simplify complex programs for union members and their families.
Questions
What services does Local Union 33 provide?
We offer plumbing, HVAC, medical gas systems, process piping, and welding services for commercial, industrial, and residential projects.
How can contractors access your workforce?
Contractors in our jurisdiction can request skilled labor for plumbing, heating, and specialized systems through our union referral process.
Do you offer apprenticeship programs?
Yes, we provide comprehensive training through United Association partnerships to develop skilled tradespeople for the industry.
What benefits do members receive?
Members earn competitive wages, healthcare coverage, retirement plans, and access to ongoing professional development opportunities.
How long has Local Union 33 operated in Iowa?
We have served Iowa since our founding in Des Moines on November 1, 1891.