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    Verified french drain services reviews

Top-Rated French drain pros in Potomac - Updated Nov 2026

Avatar for Remedy Plumbing & Drain Cleaning, LLC
Remedy Plumbing & Drain Cleaning, LLC
4.7(
733
)
Drain Clog or Blockage - ClearSump Pump or Interior Foundation Drains - Install

Serving Potomac, MD and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

"I would recommend Remedy P&D to anyone needing a plumber. They were fast to respond and schedule an appointment for a free estimate. The plumber arrived on time and was dressed in a professional company uniform. The plumber also recommended a quick cost saving option for fixing my upstairs bathroom drain. Instead of trying to make a quick buck by over charging me on a simple fix he advised me to save the cost and do his recommendation."
Response time5 hrs
59 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Star Plumbing and Drain, LLC
Star Plumbing and Drain, LLC
4.5(
289
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For Business

Serving Potomac, MD and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Star Plumbing came out on a Sunday evening at exactly the agreed upon time. He was very pleasant, professional and knowledgable however he did not have the equipment necessary to clear my clogged drain. His longest snake was 50' long and the clog was more than 50' from the snake's entry point into the drain system. He initially tried to clear the drain with his 25' snake and when that did not work he used his 50' snake. When that did not work he called a colleague with another company and asked him to come out the next day. Star Plumbing did not accept any money for his attempt to clear the clog. The colleague he called arrived the next day at the time agreed upon and was able to clear the clogged drain."
our ad
Response time8 hrs
Recommended by95%of homeowners
Avatar for Drainage and Erosion Solutions
Drainage and Erosion Solutions
4.2(
310
)
Basement Drainage Channels - InstallFoundation Drainage - Install or Replace

Serving Potomac, MD and surrounding areas

Approved

In business since 2003

Free estimates

Warranties offered

"David & his team with Arcelio did an outstanding job! We needed it done on short notice & they rose to the occasion. And just before a weekend of heavy rains. So our basement went from waterfalls of leaks to dry as a bone, despite the heavy flooding outside. They took lots of pictures of the process so we could see all the work they did underground. They were reasonably priced & did the job done with good attention to detail & pleasing aesthetics with the river stone. We love that they guarantee their work. We're very grateful to have chosen Drainage & Erosion Solutions. We kept seeing their signs & trucks in the Del Ray, Alexandria neighborhood over the years & we can see why others chose them, also."
The property before we began.
First step - demolition
Regrading and Patio
Regrading and Patio
Regrading and Patio

+66

Response time1 day
Response rate100%
2 neighbors recently requested a quote
Suma Plumbing and Drain Cleaning, LLC
4.9(
635
)
Drain Clog or Blockage - Clear

Serving Potomac, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2003

Free estimates

Customers say: True professional

"Suma responded to our request to snake our basement floor drain. Upon inspection we were quoted a price for the job which we felt was reasonable. The technician completed snaking the drain and then tested it thoroughly to be certain it was clear. Very professional."
Response time2 hrs
25 neighbors recently requested a quote
Recommended by95%of homeowners
Joseph plumbing & drain
4.9(
162
)
Basement Drainage Channels - InstallDrain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For Business+3 more

Serving Potomac, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"The Technician Joseph came promptly, changed the garbage disposal and unclogged the drain line quickly within a couple of hours, great job and I am very satisfied with service. Highly recommended."
Response time6 hrs
Response rate100%
4 neighbors recently requested a quote
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French Drains FAQs, answered by experts

If the drain pump on your washing machine is continuously draining, it could be that the control board is damaged and requires repair, or there’s a clogged or kinked drain hose. If you can’t locate the problem, you’ll want to have a plumber or appliance repair expert come take a look.

That pungent rotten egg smell coming from your drain is likely the buildup of biofilm—hair, skin, and soap scum that turns into a black sticky mess. In this case, pouring down near-boiling water, baking soda, and white vinegar will remove the smell. Keep in mind that a rotten egg smell is occasionally a sign of larger sewage line clogs and other related issues.

If you've discovered a rather frightening buildup of brown and black gunk below your shower cover, you're not alone. The smelly sludge is often a collection of mildew and biofilm. Biofilm comes from the breakdown of soap scum, hair, skin cells, and bacteria that collects during shower time. It's quite common in a humid space and relatively easy to clean with a gentle DIY cleaning solution such as baking soda and vinegar.

If you have a sink stopper, it can feel more challenging to clean the drain without removing it, but here are a few simple steps:

  • Pour ½ cup baking soda into the drain using a funnel

  • Pour 1 ½ cups vinegar into the drain

  • Close the sink stopper for 15–20 minutes

  • Open the drain

  • Pour 2 cups of boiling water down the drain (be cautious as boiling water can damage some types of pipes)

If the drain isn’t unclogged, repeat the process.

It is generally not recommended to pour hot or boiling water down a drain to unfreeze pipes due to significant risks. In some cases, the sudden temperature change can cause more ice buildup or produce steam, which increases pressure and could cause the pipe to burst, leading to costly damage and potential burn injuries. While hot water might help with a partially frozen drainpipe, it is unlikely to thaw a completely blocked water pipe further down the system. Additionally, boiling water can damage plastic pipes over time. Safer and more effective methods include using a space heater near the frozen section or applying hot towels directly to the pipe.

The Potomac, MD homeowners’ guide to french drain services

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