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

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

"I called Star Plumbing on a Tuesday to fix a clogged drain in my kitchen sink and bathroom shower. They gave me an appointment for later that same day. They were professional and knowledgeable. They talked me through the work and recommended solutions to keep the problem from repeating. I have experience with several big name plumbing companies over the last 20 some years and Star Plumbing gets my vote as the best I have ever worked with. And, you can't beat their prices!! In fact, I called them the very next day to fix a plumbing problem at my office."
our ad
Response time8 hrs
Recommended by95%of homeowners
Avatar for Dun Rite Drain Cleaning
Dun Rite Drain Cleaning
4.6(
395
)
Drain Clog or Blockage - Clear

Serving Potomac, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"Sterling was a great technician he worked extremely hard to clear my toilet drain. They really take pride in there work at this company and completely explained me the process and everything that was involved. I had roots clogging my toilet drain and Sterling was able to locate and remove the root issue and provide me with video evidence of just how clean the drain now is after the service. Very happy with the service provided."
Ihop shopping center
Ihop shopping center
Ihop shopping center
Ihop shopping center
Ihop shopping center

+20

Response time3 hrs
Response rate95%
8 neighbors recently requested a quote
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

""After 15 years of enduring water and flooding damage to our yard and the foundation of our house, and after trying various 'solutions' from well-intentioned landscapers that never truly resolved the issues, we ultimately decided to engage Drainage and Erosion Solutions. We required comprehensive flood control and damage mitigation, and their expert team skillfully implemented swales, dry creeks, catch basins, and channel drains in areas where water management was critical. They also replaced a water-damaged window well, removed a flagstone patio to install drain basins and drainage pipes, and flawlessly reinstalled it. The supervisor and crew displayed remarkable knowledge, professionalism, and an unwavering commitment to detail throughout the entire project. This system has been operational for several months now, and even during the most intense rainfall, which historically led to road flooding, my house and foundation remain dry. We enthusiastically endorse this company without reservation.""
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

"Kap from Joseph Plumbing and Drain was great. I requested a quote Saturday morning and they came out within a few hours. We scheduled the work for Friday and they arrived on time, were friendly and professional, and did excellent work installing my new main water shut-off valve. Highly recommend."
Response time6 hrs
Response rate100%
4 neighbors recently requested a quote
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French Drains FAQs, answered by experts

Yes, pop-up drains commonly get clogged with hair, soap scum, and toothpaste. It is important to know how to properly clean the drain or get professional help to ensure it remains clear and can drain water effectively.

The cost to unclog a drain varies based on the location and severity of the clog. For simple clogs within your home, such as in a sink, toilet, or shower, hiring a plumber typically costs between $110 and $350, with an average of around $200. Snaking a toilet or sink usually costs between $110 and $275, while a bathtub or shower clog costs about $225.

For a more serious clog in the main sewer line, the cost is higher. Clearing a main line clog generally costs between $200 and $600, with an average of about $380. However, prices can range from as low as $100 for snaking a minor clog to over $1,600, particularly if advanced methods like video inspection and hydrojetting are needed for a large or hard-to-reach blockage. Some severe main line clogs can cost upwards of $1,000 to clear depending on factors like the cause of the clog, its distance from an accessible cleanout, and whether the pipe is located beneath an occupied space (e.g., in an apartment building). You may be able to save money on minor clogs by using a drain snake or bladder yourself.

A bit of water in the bowl can help unclog a toilet, especially if you're using a plunger. However, if the bowl is full to the brim, you'll need to strap on gloves and remove some of the wastewater in a cup or container so it doesn't overflow when you try to unblock the pipe. If you're concerned about it filling further, manually close the flapper in the toilet tank or turn off the water supply to the toilet.

Septic tanks can clog if they aren’t pumped every few years since solid waste accumulates inside of them. Your tank might also clog if you have a habit of flushing anything other than human waste or toilet paper. Items like diapers, baby wipes, paper towels, cat litter, and personal hygiene products should never go down your pipes.

Boiling water helps unclog a drain, but usually only with a harder abrasive such as baking soda or vinegar. On its own, it isn’t the most effective tool. In addition, you shouldn’t use boiling water if you have PVC pipes, as it can soften or melt them. Use a plunger or enlist the help of a pro if you have plastic pipes.

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.