Find a Plumber in Delaware

The Delaware Division of Professional Regulation's Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners issues plumbing licenses at the master tier; apprentice and journey-level workers operate under a master. The Board must issue a Delaware license before any plumbing work. Holding a license from another state does not substitute.

• Authority. Delaware Division of Professional Regulation, Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners
• License structure. master plumber (the state licenses the master tier; apprentice and journey-level workers work under a master license holder)
• Worth knowing. The Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners must issue its own license before a plumber does any plumbing or HVACR work in Delaware, even a plumber who holds an active license from another state.

Checked against the official source, September 2026: dpr.delaware.gov. License verification against sources like this is how a pro enters matching on CopperMain. A request never reaches an unverified one.

Delaware's mixed winters bring cold snaps rather than months of frost, yet a single night below freezing finds the garage run or exterior-wall pipe nobody insulated. Hose disconnection and spigot covers before the first snap are cheap compared with the repair they prevent. Utility mineral content varies across the state's systems, so the annual report from your own supplier is the reference for any scale or softening question.

• Drain Cleaning
• Water Heater Repair
• Sewer Line Repair
• Septic Tank Pumping
• Leak Detection & Repair
• All services →

Local guides for Wilmington, Dover, Newark and other Delaware communities are published as their licensing, water and permit facts are verified. For the job itself, describe the problem and your ZIP: a license-checked plumber who covers your area gets the details and contacts you with next steps and a quote.