
Mahon Plumbing
Mahon Plumbing
Mahon Plumbing handles residential, commercial and new-construction plumbing in Baltimore and the surrounding Maryland counties. It has served the area since 1994 and offers emergency plumbing service 24 hours a day, seven days a week.
Last Updated October 9, 2026.
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Business Highlights
- Mahon Plumbing describes itself as family-owned.
- It describes itself as a licensed Maryland utilities contractor.
- The company lists Master Plumber #11839.
- It describes itself as drug-free and fully insured.
Service Area
Anne Arundel County, Baltimore County, Baltimore City, Howard County and Queen Anne’s County.
Active Business Listing
Mahon Plumbing is one of 12 plumbers ProsGrade lists in Baltimore, Maryland.
12 services listed, including Emergency plumbing, Water heater installation & repairs and Sump pumps. Open 24 hours, 7 days a week. 272 reviews.
- Verified listing details
- Service information
- Customer review signals
- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How Mahon Plumbing compares with the other 11 plumbers on ProsGrade in Baltimore, using public Google ratings and review counts.
- Ranks in the top half of the 12 Baltimore plumbers on ProsGrade by Google rating and review volume.
Trust Signals
24/7 emergency plumbing service available.
Services Covered
12 services- Emergency plumbing24/7 service for leaks, bursts and urgent plumbing issues.
- Water heater installation & repairsGas and electric models; Rinnai tankless water heaters.
- Sump pumpsWater-powered, battery-backup and submersible pumps.
- Backflow device testingTesting, repairs and installations.
- Plumbing repairsFaucets, garbage disposals, toilets and sinks.
- Gas line installation & inspectionsInstallation and repairs.
- New construction & renovationsResidential, commercial and new-construction plumbing.
- Drain & sewer cleaningClog and buildup removal.
- Jetting servicesHigh-pressure water jetting for grease, roots and tough blockages.
- Video inspectionCamera inspections to locate sewer and drain issues.
- Sewer line repairs & replacementRepairs and full sewer-line replacement.
- Water main and service linesRepair, replacement and trenchless replacement.
Reviews
What customers say
Customers praise the technicians as courteous and knowledgeable. A customer who submitted an online service ticket in the middle of the night says the company emailed a response by 6:30 a.m.
Customer Reviews
Got Lemons
Steve Greenlow
Sam Price
David Schuch
paul 0584
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Frequently Asked Questions
Does Mahon Plumbing assess a water heater before recommending replacement?
Its technicians assess the problem to determine whether repairs can correct it before recommending a full replacement.
What happens if a backflow preventer is not working properly?
Mahon Plumbing presents options to repair or replace the device, depending on the situation.










