The 10 Best Plumbing Companies in Maryland — 2026

We compared all 667 plumbing companies in Maryland on the data that matters: services offered, posted hours, and how easy each one is to reach. No pay-to-play — this ranking comes straight from the listings data, updated November 2026.

#1 · Roto-Rooter Plumbing & Water CleanupRockville Drain service

(301) 755-2939 Website View listing

#2 · R E Robertson Plumbing & Heating IncAnnapolis

(410) 266-0636 Website View listing

#3 · M H BarnesSilver Spring

(301) 654-1441 Website View listing

#4 · Heil PlumbingJessup

(410) 799-7727 Website View listing

#5 · Guerrero Plumbing, LlcSilver Spring

(301) 593-0930 Website View listing

#6 · Krause RenovationsForest Hill

(410) 803-2460 Website View listing

#7 · Shepherd PlumbingQueenstown

(410) 827-6778 Website View listing

#8 · Welch and Rushe IncUpper Marlboro

(301) 430-6000 Website View listing

#9 · B. Mccall PlumbingClinton

(301) 868-7080 Website View listing

#10 · Haynes Plumbing & Heating IncLanham

(301) 577-9571 Website View listing

Run one of these businesses? You earned this spot — email contact@plumbingatlas.com for your free “Top Plumbing Companies in Maryland” badge to put on your site, and we’ll make sure your listing stays accurate.
How we rank: every listing earns points for listed services (drain service, water heaters, sewer service, emergency service), posted hours, and working contact details. The ranking is recalculated with every data update.