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Expert Plumbing & Mechanical Services in Iowa
Plumbers and Steamfitters Local Union 33 has served the plumbing and mechanical construction industry for over 130 years, delivering expert craftsmanship across central and western Iowa. Our team of 1,950 skilled professionals specializes in multi-family housing, commercial and industrial facilities, and process piping, ensuring projects are completed safely and on schedule. Established in 1891, we combine deep industry experience with rigorous training programs to meet the evolving needs of contractors and clients.

Our members benefit from comprehensive career development opportunities, including certifications and academic degrees, while employers gain access to a highly trained workforce capable of handling complex specialties like medical gas systems and high-purity piping. We remain committed to advancing the plumbing trade through innovation, safety, and excellence in service delivery.
Services
Plumbing Services Steamfitting HVAC Installation Welding Medical Gas Systems Valve Repair Water Treatment Process Piping Industrial Maintenance Apprenticeship Training
Highlights and features
  • We offer 130+ years of specialized expertise in plumbing and mechanical construction.
  • Our workforce of 1,950 trained professionals handles complex industrial and commercial projects.
  • We serve central and western Iowa with locally knowledgeable teams.
  • Our members receive industry-recognized certifications and academic training opportunities.
  • We guarantee reliable manpower solutions for contractors in regulated specialties.
Services
Plumbing Services
Our plumbing services cover residential, commercial, and industrial projects with precision and code compliance. We install, repair, and maintain water distribution, drainage, and gas piping systems using advanced techniques. Clients benefit from 24/7 emergency support and guaranteed adherence to safety standards.
Steamfitting
Specialized installation and maintenance of high-pressure steam systems for industrial facilities. We handle boiler connections, turbine piping, and pressure vessel integration with ASME-certified welds. Clients receive durable solutions for power generation and manufacturing operations.
Medical Gas Systems
Design and installation of NFPA-compliant medical gas and vacuum systems for hospitals. Our technicians ensure sterile, leak-free oxygen, nitrogen, and suction systems with regular maintenance protocols. Healthcare facilities gain reliable infrastructure meeting strict regulatory requirements.
Apprenticeship Training
Four-year apprenticeship programs combining classroom instruction with hands-on training. Graduates earn journeyman certifications and associate degrees through partnerships with technical colleges. Employers gain skilled workers proficient in modern plumbing technologies and safety practices.
Process Piping
Custom piping systems for chemical, food processing, and pharmaceutical plants. We install stainless steel and specialty alloy piping with precision welding and pressure testing. Clients receive corrosion-resistant systems optimized for product flow and regulatory compliance.
People
Jama Barbour
Chief Operating Officer
Jama Barbour oversees operations at Local Union 33 with 25+ years of experience in union administration. She manages member benefits, employer relations, and strategic planning while ensuring compliance with collective bargaining agreements.
Jamie Smith
Fund Office Supervisor
Jamie Smith supervises fund office operations, handling pension and health benefit administration. With 15 years in union financial management, he ensures accurate reporting and member support for retirement and healthcare programs.
Questions
How do I become a member of Local Union 33?
Contact our office to apply for apprenticeship programs or transfer membership from another local. Requirements include passing a drug test and meeting skill qualifications.
What benefits do members receive?
Members access healthcare plans, pension funds, apprenticeship training, and legal representation. Additional benefits include discounted tools and equipment purchasing programs.
Do you offer emergency plumbing services?
While we don't provide direct emergency services, our certified contractors handle urgent repairs through union referral systems available 24/7.
How are work hours reported for pension credits?
Employers submit monthly reports by the 20th of each month. Hours are tracked through our online portal with updates available to members via the member portal.
Can retirees maintain health coverage?
Retirees maintain coverage through pension contributions. Surviving spouses may continue coverage by self-paying premiums after the member's passing.