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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon461
    Verified french drain services reviews

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

Avatar for Basement Waterproofing Nationwide Inc
Basement Waterproofing Nationwide Inc
4.6(
188
)
Basement Drainage Channels - InstallFoundation Drainage - Install or Replace

Serving Conowingo, MD and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"The entire process went extremely well. The estimate was very clear about the scope of work, the crew was professional, on time and carefully about reducing disruption/mess and our basement is dry, as promised. They even went above and beyond and fixed a downspout outside so water would flow away from the house. Once the job was finished, the company rep came out to walk through with us and answer any questions. I have no doubt that if a problem did arise, they'd fix it."
Additional Photos
Response time2 days
12 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Quality 1st Basement Systems, Inc.
Quality 1st Basement Systems, Inc.
4.7(
113
)
Basement Drainage Channels - InstallSump Pump or Interior Foundation Drains - Install

Serving Conowingo, MD and surrounding areas

Approved

In business since 1999

Free estimates

Warranties offered

"I had water coming into my basement from somewhere and I figured it was from a glass block window. Basement Systems USA came out and looked in the basement and at the window from the outside to discover there was no drain in the well and the water was filling up the well from underneath because the water had no where to go and then found its way into the basement. They drilled a hole from the the window into the basement. They attached a channel to the wall and installed a french drain leading to the sump pump. A new, stronger sump pump was installed. Luckily, I got the work done before the rain came the next day. The next day it rained and the basement was dry. Morgan explained the system to me after all the work was done. The work was done neatly and cleanly."
Show Booth
Tough day
Found it in a crawlspace
What is it?
Found it in a crawlspace

+142

Response time1 day
Recommended by88%of homeowners
Avatar for Mr. Rooter Plumbing
Mr. Rooter Plumbing
4.4(
13
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessDrain Line Breakage - Camera Locate+2 more

Serving Conowingo, MD and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

"The entire experience went really well. Scheduling the appointment was a breeze and able to be set at a convenient time for me. Before the technician arrived I received a text message and a phone call with the name of who I should be expecting. They arrived on time and placed their shoe covers on before entering my home. Zach then proceeded to ask if I had any concerns or problems before beginning my plumbing inspection. He checked all of my pipes and drains as well as toilets and water heater. Zach showed me a picture of a pipe that was starting to rust under my sink to make me aware, but mentioned it wasn't something that needed to be done that day. He then informed me of the age and average life of my water heater so I could begin planning for the future. At the end I decided one of my toilets needed to be replaced. He had exactly what I wanted on his truck and was able to complete the job in a timely manner. They left my home as if no one had been there with cleanliness. I will certainly use Mr. Rooter plumbing again in the future."
Plumbing Project
Gas Water Heater in a very tight spot in a basement.
Tankless Water Heater Installation in Middletown, De
Natural Gas Water Heater Installation In Wilmington, DE
Propane Water Heater Installation In Newark, DE

+1

4 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for Waterproofing One
Waterproofing One
4.7(
152
)
Basement Drainage Channels - InstallFoundation Drainage - Install or Replace

Serving Conowingo, MD and surrounding areas

Approved

In business since 1999

Free estimates

Warranties offered

"Had a good experience overall. They had an opening in the schedule so were able to start quickly. Property had some plumbing buried in the floor that the crew had to work around and it was all done without any issues. Crew was professional and easy to work with. Haven't had any water issues since the drain and sump were installed several months ago--despite several big rains."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

6 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Best Buy Waterproofing, LLC
Best Buy Waterproofing, LLC
4.4(
155
)
Foundation Drainage - Install or Replace

Serving Conowingo, MD and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I had a great experience with Best Buy waterproofing. I contacted them for inspection due to water rising underneath my tile in the basement. They responded very quickly and had someone out for the inspection a day later. Ed completed my inspection and was very informative and communicative throughout the whole process. He didnâ t try to scare me into getting any services and was very patient with me. Any questions I had he was on it and available. When I made my final decision it was quick and a painless process. The crew cleaned up well and walked me through the work they had done. They installed a new drain and sump pump. Might I add they made my installation very esthetic by placing the line in the wall to hide the pipes when the dry wall is replaced. I will definitely recommend to friends and family!"
Response time2 days
Recommended by98%of homeowners
Avatar for JES Foundation Repair
JES Foundation Repair
4.5(
1,449
)
Sump Pump or Interior Foundation Drains - InstallBasement Drainage Channels - Install

Serving Conowingo, MD and surrounding areas

Approved (Corporate)

In business since 1993

Free estimates

Emergency services offered

"Manuel Guzman (foreman) Brando Amaya and Jeffrey Amaya did an excellent job building a french drain and installing a sump pump in our basement. All of our questions were answered completely and politely. All 3 worked very hard and were true professionals. We would highly recommend them for any similar project."
Protect Your Basement
Correct Your Wet Basement
Waterproof Your Basement
Protect Your Concrete
Polyurethane Foam Injection

+12

498 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Always Waterproofing
Always Waterproofing
4.2(
427
)
Foundation Drainage - Install or ReplaceBasement Drainage Channels - Install

Serving Conowingo, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Credit card accepted

"$9,500 I was quoted for my concrete driveway and porch to be removed and a new concrete driveway and pad poured. I needed a culvert installed under the foot of my driveway for rain water drainage, it was agreed that a 4" pipe would work. When the crew came out to do the work, the demolition part went very smoothly but when it came to the drain I was told I needed an 8" pipe. The trench was dug for it including digging an 8" deep by 1 foot around hole in my nabors parking pad. Than I was told the grading was wrong. I told him water wasn't draining because the trench he dug for the 8" pipe he suggested was below the rest of the drain lines and the water will not flow untill it was leveled back out. He argued with me about it for about 3 hours wile the concrete was starting to be poured. After his own workers and I told him the 8" pipe would not work, we went back to the originally quoted 4" pipe and everything drained fine. After the concrete was completed the work looked great."
Updated concrete deck
Cozy front porch
Response time10 hrs
397 neighbors recently requested a quote
Recommended by90%of homeowners
F.H. Furr Plumbing Heating AC & Electrical
5.0(
5
)
Drain Clog or Blockage - ClearDrain Line Breakage - Camera Locate

Serving Conowingo, MD and surrounding areas

Approved (Corporate)

Emergency services offered

Coastal living on Delaware’s Eastern Shore means your cooling and heating systems face constant challenges from salt air, moisture, and temperature swings. Whether you're by the beaches, inland, or up in New Castle, our HVAC specialists deliver solutions that stand up to local conditions while maximizing your home's efficiency. Plus, we tackle all plumbing and electrical issues when your home needs it most. Book your service with F.H. Furr today and enjoy quick, reliable comfort backed by licensed technicians.

5 neighbors recently requested a quote
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French Drains FAQs, answered by experts

If you’re not using a septic system, problems with your home’s plumbing won’t cause this—it’s a city problem. A large blockage in the municipal sewage lines may cause those lines to back up into your home. This is extremely unpleasant and can be a serious health risk due to bacteria and other contaminants. If this occurs, call a pro (or your city) immediately.

You can unclog an AC drain line for free if you already have these household ingredients: water, vinegar, and rags. Alternatively, if you’d rather not deal with the mess, you can hire a pro to clear your drain line. If you go that route, an HVAC service call costs between $100 and $250.

While you don’t have to run out and immediately buy a new toilet at the first sign of a clog, if the toilet keeps clogging because it’s a low-flow or poorly designed model, a new toilet may be the way to go. If your toilet keeps clogging, you can try using less toilet paper, adjusting the fill valve, checking the toilet vent pipe on the roof, and using a toilet auger to make sure nothing is stuck in the pipe or trap.

Using less toilet paper is the easiest way to prevent future clogs. Also, avoid flushing sanitary products, thick paper towels, or hair down the toilet. If you’ve been using a brick in the tank to reduce the water used to flush the toilet, take it out immediately. Bricks will eventually fall apart and clog your toilet drain. Keeping your toilet lid closed also helps avoid future clogs.

If you try a drain snake and various DIY methods for unclogging drains to no avail, bring in a professional plumber to assess the situation. Also, if multiple drains in your home are backing up or you smell sewage, a visit from a plumber is best. You can expect your drain cleaning costs to fall around $250, and this can include an assessment of what’s caught in your plumbing and if there’s a larger, underlying problem. You should also consider calling a pro if you need to snake a toilet, as DIYing this could lead to a cracked fixture.

The Conowingo, MD homeowners’ guide to french drain services

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