Certification or Licensing
Most states require plumbers to be licensed. To obtain this license, plumbers must have two to five years of experience and pass a special examination to demonstrate their knowledge of local building codes as well as their all-around knowledge of the trade. To become a plumbing contractor in most places, a master plumber's license must be obtained. Several states require plumbers who work on gas lines to have a special license. Check with the state that you plan to work in to determine the requirements.
Earnings - Outlook - Resources & Associations and more
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- Air Quality Engineers
- Airport Service Workers
- Architects
- Asbestos Abatement Technicians
- Assessors and Appraisers
- Boilermakers and Mechanics
- Bricklayers and Stonemasons
- Building Automation Systems Engineers
- Building Automation Systems Technicians
- Building Performance Diagnosticians
- Business Managers
- Carpenters
- Cement Masons
- Chemical Engineers
- Chimney Sweeps
- Civil Engineering Technicians
- Civil Engineers
- Computer-Aided Design Drafters and Technicians
- Construction Inspectors
- Construction Laborers
- Construction Managers
- Cost Estimators
- Drafters
- Drywall Installers and Finishers
- Electricians
- Elevator Installers and Repairers
- Energy Conservation Technicians
- Energy Consultants
- Energy Transmission and Distribution Workers
- Engineering Technicians
- Engineers
- Floor Covering Installers
- General Maintenance Mechanics
- Geodetic Surveyors
- Geologists
- Geotechnical Engineers
- Geothermal Energy Industry Workers
- Geothermal Production Managers
- Geothermal Technicians
- Glaziers
- Green Builders
- Grounds Managers
- Groundwater Professionals
- Heating and Cooling Technicians
- Hydroelectric Plant Technicians
- Hydroelectric Production Managers
- Hydropower and Marine Energy Industry Workers
- Indoor Environmental Health Specialists
- Insulators/Insulation Workers
- Janitors and Cleaners
- Landscape Architects
- Landscapers
- Lathers
- Line Installers and Cable Splicers
- Locksmiths
- Marble Setters, Tile Setters, and Terrazzo Workers
- Meter Readers, Utilities
- Millwrights
- National Park Service Employees
- Non-Destructive Testing Specialists
- Occupational Safety and Health Workers
- Operating Engineers
- Painters and Paperhangers
- Parking Attendants
- Plasterers
- Power Plant Workers
- Property and Real Estate Managers
- Real Estate Developers
- Renewable Energy Careers
- Renewable Energy Site Assessors
- Resort Workers
- Restaurant and Food Service Managers
- Roofers
- Security Consultants
- Security Guards
- Sheet Metal Workers
- Smart Building Systems Designers
- Sports Facility Managers
- Stationary Engineers
- Surveying and Mapping Technicians
- Surveyors
- Swimming Pool Designers
- Telephone and PBX Installers and Repairers
- Traffic Engineers
- Wastewater Treatment Plant Operators and Technicians
- Water/Wastewater Engineers
- Welders and Welding Technicians
- Wind Energy Engineers
- Wind Energy Operations Managers
- Wind Energy Project Managers
