A burst pipe at midnight, a water heater that quits on a cold morning, a new hospital that needs miles of copper and gas lines before it can open: each of these problems ends with a call to a plumber. Clean water in and wastewater out is something every home, restaurant, school and factory in America depends on, and the people who install and repair those systems are licensed professionals in most of the country.

Plumbing is one of the steadier skilled trades. Pipes keep leaking whether the economy is strong or weak, many older workers are retiring, and the work cannot be shipped overseas. The trade does demand years of training and a state license, though, and pay depends a great deal on where and how you work. This guide explains the types of plumbing work, typical earnings, the licensing ladder, valuable add-on certifications, how service plumbers are paid, running your own shop, safety and legal rights, and the job scams to watch for.

Different Corners of the Plumbing Trade

Plumbers share core skills, but daily work changes a lot depending on the setting.

Residential Plumbing

Residential plumbers install and repair sinks, toilets, showers, water heaters, drain lines and water softeners in houses and apartments. The work involves crawl spaces, attics and direct contact with homeowners, so clear communication is part of the job.

Commercial Plumbing

Commercial plumbers work on offices, restaurants, schools, hotels and stores. Systems are larger, codes are stricter and jobs often include grease traps, large water heaters, commercial restrooms and fire-related connections.

Service and Repair

Service plumbers drive a stocked van from call to call, diagnosing clogs, leaks, low pressure and failed fixtures. This is the side of the trade where emergency calls and sales commissions come into play.

New Construction

New construction plumbers install the underground piping, the “rough-in” inside walls and the final fixtures in new buildings. The pace follows the building schedule, and work can slow when local construction slows.

Pipefitting and Steamfitting

Pipefitters and steamfitters handle high-pressure systems for heating, cooling, steam, chemicals and industrial processes in plants, refineries and large buildings. Many also weld. Some states license this work separately from plumbing.

Gas Fitting

Gas fitters install and test natural gas and propane lines to stoves, furnaces, dryers and water heaters. Because a mistake can cause a fire or explosion, many states require a separate gas endorsement or license.

Plumbing Wages From Apprentice to Master

According to the US Bureau of Labor Statistics, plumbers, pipefitters and steamfitters earned a median wage of $63,800 a year, or about $30.67 an hour, in May 2025. Government employers paid a median of around $71,660, while plumbing, heating and air-conditioning contractors paid around $63,010. The table shows rough hourly estimates by role and stage.

Plumbing Role	Estimated Hourly Pay	What Usually Affects It
First-year apprentice	$17 to $23	Set as a share of journeyman rate
Senior apprentice	$22 to $30	Hours logged, classes passed
Journeyman, new construction	$27 to $40	Region, union scale, overtime
Journeyman, service and repair	$28 to $45+	Commission, call-out pay
Commercial / industrial pipefitter	$30 to $48	Welding skill, plant shutdowns
Medical gas installer	$32 to $50	Specialty certification
Master plumber / supervisor	$38 to $60+	License level, crew size

Please read these numbers as a general guide only: they are estimates pulled from public wage reports and typical job listings, and your real pay can be higher or lower depending on the state, employer, license level, overtime and union contract. This article is meant for career research. It does not advertise a vacancy, and we are not a recruiting agency, a placement firm or an immigration service. Always confirm wages and hiring terms with the employer, and check licensing and labor rules through official US government and state sources.

Federal projections also expect plumbing employment to grow faster than average over the coming decade, with tens of thousands of openings each year as experienced plumbers retire.

The Licensing Ladder: Apprentice, Journeyman, Master

In most states plumbing is a licensed trade, and you climb three main levels. The exact names, hours and exams vary from state to state, and in some places licensing is handled by a city or county, so always check with your local licensing board.

Apprentice

Apprentices work under a licensed plumber while attending classes on code, math, blueprint reading, drainage and venting. Many programs last four or five years, with about 2,000 paid work hours per year plus classroom hours. Some states require apprentices to register before they start counting hours.

Journeyman

After finishing the required hours, you can generally sit for a journeyman exam. It usually tests plumbing code, practical knowledge and sometimes a hands-on task. A journeyman can work without direct supervision but typically works under a master or a licensed contractor.

Master Plumber

A master license usually requires several more years as a journeyman and a tougher exam covering design, code and business rules. In many states, a master plumber or plumbing contractor must be named on every permit, which is why this license is needed to run your own company.

Licenses do not always transfer between states. Some states have reciprocity agreements, but many require a new exam if you move. Continuing education is often needed to renew.

Backflow, Medical Gas and Other Add-On Credentials

Specialty certifications can bring higher pay and steady contract work.

• Backflow prevention testing: many cities require yearly tests of devices that stop dirty water from flowing back into the public supply. Certified testers can build a regular route of commercial customers. Requirements are set by the state or water utility.
• Medical gas installation: hospitals, surgery centers and dental offices use piped oxygen, nitrous oxide, medical air and vacuum. Installers usually need a recognized medical gas certification, such as one based on the ASSE 6010 standard, and some states require it by law.
• Gas fitting endorsement: required in many areas for natural gas and propane work.
• Water heater and boiler training: manufacturer and code training for tankless, high-efficiency and hydronic systems.
• Welding and brazing: useful in commercial and pipefitting jobs.

Service Calls, Emergency Pay and Commission Plans

Service plumbing often pays differently from construction work, so understand the pay plan before you accept.

• Straight hourly: you are paid for all hours worked, with overtime after 40 hours.
• On-call and emergency pay: many companies pay a premium, a flat call-out fee or a higher rate for nights, weekends and holidays. Ask how often you will be on call and what you earn when the phone does not ring.
• Commission or flat-rate pay: some service companies pay plumbers a percentage of each job sold or a set amount per task. Strong technicians can earn far more than hourly staff, but income swings with the season and the number of calls.
• Sales bonuses: extra pay for selling water heaters, filtration systems or maintenance plans.

Be wary of plans that push you to sell work customers do not need. Honest diagnosis protects your license and reputation. Under the federal Fair Labor Standards Act, commission-paid employees still have overtime and minimum wage protections in most cases, unless a specific exemption truly applies.

Opening a Plumbing Company of Your Own

Many master plumbers eventually start their own company. The steps usually include:

1. Contractor license: in many states this means a master plumber license or a separate plumbing contractor license, plus a business exam.
2. Liability insurance: covers damage if a leak floods a customer’s home. Many states and cities require proof before issuing permits.
3. Bonding: a surety bond may be required to protect customers and local governments if work is not completed or permit fees go unpaid.
4. Workers’ compensation: generally required once you hire employees.
5. Business setup: registering the company, a tax ID, a stocked vehicle and a way to price jobs that covers fuel, parts, insurance and your own time.

Owners earn more per job but take on marketing, billing, unpaid invoices and the stress of finding work. Building a base of repeat customers and commercial service contracts helps steady the income.

Hazards Plumbers Face and Your OSHA Rights

Plumbing carries more risks than many people expect. Sewage can carry bacteria and viruses, so gloves, eye protection and hand washing are essential. Older buildings may contain asbestos pipe insulation or lead solder. Trench work for sewer lines can collapse without proper shoring. Crawl spaces, manholes and tanks can be confined spaces with poor air. Soldering torches, gas lines and power tools add fire and injury risk.

The Occupational Safety and Health Act requires employers to provide protective equipment, training and a workplace free of recognized serious hazards. You have the right to ask for safety information, refuse truly dangerous work in certain situations and report problems to OSHA without being punished for it.

Health Plans, Retirement and Paycheck Rights

Full-time plumbers at established companies usually receive health insurance, paid time off and a 401(k) plan, sometimes with a company match. Many also get a company van, fuel card, uniforms and tool allowances. Union plumbers and pipefitters generally receive health coverage and pension contributions through their contract.

Wage theft does happen in construction and service trades. Common problems include unpaid travel time between calls, missing overtime, illegal deductions for tools and workers wrongly labeled as independent contractors. Keep your own record of hours and jobs, and contact the US Department of Labor’s Wage and Hour Division or your state labor agency if you are underpaid.

Legal Right to Work as a Plumber

The United States has no dedicated visa for plumbers. Every employer must check identity and work permission through Form I-9, and many also use E-Verify. Citizens, permanent residents and others with valid work authorization can apply for apprenticeships and jobs.

Employer visa sponsorship for plumbers is rare. A foreign license generally does not count toward a US state license, so experienced plumbers from other countries often need to prove hours and pass state exams after they are legally allowed to work. Check official US immigration and state licensing websites before making any plans.

Plumbing Job Scams to Avoid

• Pay-to-apply offers: legitimate employers do not charge you for a plumbing job, visa or interview.
• Fake license services: licenses come only from state or local boards after real exams, never from a paid shortcut.
• Unverified companies: look up the contractor’s license number with the state board before accepting work.
• Cash-only promises with no paperwork: these jobs often skip insurance, overtime and safety protections.

Where a Plumbing Career Can Lead

Apprentices who finish their hours and pass the journeyman exam can move into service, commercial or industrial work. Masters can become estimators, project managers, plumbing inspectors for a city or county, or instructors in apprenticeship programs. Some specialize in medical gas, backflow testing or large mechanical systems, while others build their own shop with several trucks and a team of technicians.

Keeping the Water Flowing: Final Notes

Plumbing offers steady demand, solid pay and a clear path from apprentice to master. Choose the side of the trade that fits you, log your hours carefully, pass each license level in your state and add certifications like backflow testing or medical gas for higher earnings. Learn exactly how service pay plans work, protect your health on dirty and risky jobs, know your overtime and safety rights and walk away from anyone who asks you to pay for a job. Done well, plumbing can provide a lifelong career and the option to run your own business.

Pipe Talk: Plumber Questions Answered

How many years does it take to become a licensed plumber?

Reaching journeyman level usually takes four to five years of paid apprenticeship and classes. A master license often needs a few more years of experience, but exact rules depend on the state.

Can I start a plumbing apprenticeship with no experience?

Yes. Most programs accept beginners who have a high school diploma or equivalent, basic math skills and a valid driver’s license. Some also give an aptitude test or interview.

Do service plumbers earn more than construction plumbers?

Often, yes, especially with commission and emergency pay. Construction work tends to be more predictable, while service income rises and falls with call volume and sales.