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Top-Rated Plumbers in Unionville - Updated Nov 2026

Avatar for Mahon Plumbing
Mahon Plumbing
4.6(
199
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessDrain Line Breakage - Camera Locate+17 more

Serving Unionville, MD and surrounding areas

Approved

In business since 1994

Emergency services offered

Warranties offered

"I had a plumbing issue that I thought would turn into a major headache, but Mahon Plumbing made the whole process smooth and stress-free. They arrived on time, quickly diagnosed the problem, and had it fixed before I could even make a second cup of coffee. They were professional, knowledgeable, and even gave me a few tips to avoid future issues. The pricing was fair, and there were no surprises on the bill—just great service from start to finish. If you need a plumber who knows what they’re doing and won’t leave you with a mess, I highly recommend Mahon Plumbing. I’ll definitely call them again for any future plumbing needs!"
Tankless water heater installation
Tankless Water Heater Installation
Commercial drain cleaning
Sewer Line Video Inspection
Water heater replacement

+30

Response time7 hrs
Response rate100%
Recommended by92%of homeowners
Avatar for Remedy Plumbing & Drain Cleaning, LLC
Remedy Plumbing & Drain Cleaning, LLC
4.7(
733
)
Drain Clog or Blockage - ClearSewer Main - ClearSump Pump or Interior Foundation Drains - Install+1 more

Serving Unionville, MD and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

"Remedy Plumbing was GREAT!!! They came to my house on Sunday without an extra charge for the weekend call. He was extremely knowledgeable. My sump pump had gone bad. He was prompt & very efficient. Decided to have him fix a bathroom problem while he was here. Highly recommend if you have a plumbing problem, call Remedy Plumbing & Drain Co."
Response time5 hrs
59 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Dave the Plumber, LLC
Dave the Plumber, LLC
4.2(
188
)
Faucets, Fixtures and Pipes - Repair or ReplaceWater Heater - Install or ReplaceDrain Clog or Blockage - Clear+5 more

Serving Unionville, MD and surrounding areas

Approved

In business since 2000

Warranties offered

Small jobs welcome

"I hired a plumber through HomeAdvisor using prepay but I would not recommend this service. The contractor left a leaky pipe that caused water coming up through carpet. I had to purchase a wet vacuum to dry out the carpet. I had to contact HomeAdvisor again and hired Dave the Plumber, LLC who had to redo the installation done previously. Dave the Plumber replaced all the piping and outside spigot because of a water leak the previous contractor left. Thank you Dave the Plumber for being a professional and a job well done."
Our work
Our work
Our work
Our work
Our work

+11

Response time6 hrs
26 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Atlantic Blue Water Services
Atlantic Blue Water Services
4.8(
124
)
Water Heater - Install or ReplaceWater Main - Install, Replace or RepairFaucets, Fixtures and Pipes - Repair or Replace

Serving Unionville, MD and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"Mike did the troubleshooting to identify the fault while explaining to me what he was observing, then isolated the problem down to the well pump (which I already suspected). I also watched Mike do a meticulous job in shrink-tubing the connections, wrapping it all in electrical tape, and inspecting the entire length of electrical conductor TWICE. What Mike did NOT do was try to sell me an entire GrundFos system when all I needed was the pump. Yes, I had a past plumber contractor try to load up my bill unnecessarily. Mike of Atlantic Blue did a fine job."
The Fleet
The Building on Rt. 140
Main water line replacement!
Well Pump Replacement
Training Session!

+22

Response time10 hrs
Response rate88%
79 neighbors recently requested a quote
Avatar for Once & Done Waterproofing Solutions, LLC
Once & Done Waterproofing Solutions, LLC
4.9(
62
)
Sump Pump - Repair or ReplaceSump Pump or Interior Foundation Drains - Install

Serving Unionville, MD and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Once and done waterproofing helped me out with a small annoying leak Iâ  ve had around a pipe. The owner called me right away, came out the next day for an estimate, and fixed the leak the day after. His crew is friendly and courteous and hard working. Explained every step they weâ  re doing. Did such a great job, I had the bury some drain pipes and install a rain water reservoir. Very reasonable pricing and veteranâ  s discount."
Demo and Install Phase
Demo  Phase
Demo and Install Phase
Install Phase
Demo and Install Phase

+14

Response time12 hrs
Response rate90%
9 neighbors recently requested a quote
Avatar for Spicer Bros. Construction Inc.
Spicer Bros. Construction Inc.
4.6(
79
)
Bathtub Install or ReplaceShower Install or ReplaceWalk In Tub - Install or Replace+2 more

Serving Unionville, MD and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"Two shingles, which were improperly installed by the homebuilder, fell off the roof just before the remnants of a tropical storm came through.  In addition, I was aware that the rubber seals on the plumbing vent roof flashings was deteriorating and needed to be fixed or replaced.
I called Georgia at Spicer Brothers on a Thursday morning, and explained the urgency of my situation with the coming heavy rains.  She worked with their projects manager to send a crew out that day.  The repairmen who responded were experienced, and not only fixed the fallen shingles but also identified that surrounding shingles had been nailed improperly.  They re-nailed several surrounding shingles and applied adhesive to reinforce the area as best as possible. 
The crew also installed permaboots over the plumbing vent flashings to prevent leaks. 
I was very happy with the service and price seemed reasonable, especially since they had to pull a crew off another job to respond to my emergency.  I would definitely use them again for repairs and will look to them when it comes time to replace the roof.
"
Additional Photos
A sleek new shower with white simulated tile walls and chrome fixtures.
Additional Photos
Additional Photos
A beautiful new walk in shower installed with grab bars, shelves, a shower seat, and stylish black fixtures.

+9

Response time1 day
Response rate100%
36 neighbors recently requested a quote
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FAQs for plumbing projects in Unionville, MD

It depends on the severity of the leak. Minor leaks may not require immediate attention and can be scheduled during regular business hours. However, if the leak is causing significant water damage or you can't control the flow of water, it's best to call an emergency plumber right away. Addressing serious leaks promptly can prevent structural damage and mold growth, potentially saving you money on extensive repairs later.

A journeyperson plumber is a licensed professional with a state-issued permit who installs and repairs piping for water and heating systems under the supervision of a master plumber. They have completed extensive training and amassed significant experience leading teams, drafting blueprints, and designing comprehensive plumbing installations. Their proven expertise ensures that they can handle both routine repairs and complex projects with precision.

The Unionville, MD homeowners’ guide to plumbing services

From average costs to expert advice, get all the answers you need to get your job done.