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  • Verified reviews icon100
    Verified french drain services reviews

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

Avatar for Pinpoint Construction LLC
Pinpoint Construction LLC
5.0(
7
)
Basement Drainage Channels - Install

Serving Cosmopolis, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"I had a great experience with this team; they were skilled and professional throughout the excavation and grading process. Their attention to detail and reliable service left me feeling confident and fully satisfied, so I would definitely recommend them to anyone needing quality work and exceptional service."
Gravel driveway
Ruts in the driveway which causing the water to run down the driveway?
Well utility trench
Gravel driveway
Driveway work in North Kitsap

+15

Recommended by50%of homeowners
Avatar for MTU Services LLC
MTU Services LLC
5.0(
5
)
Foundation Drainage - Install or ReplaceBasement Drainage Channels - InstallSump Pump or Interior Foundation Drains - Install

Serving Cosmopolis, WA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"went very well. service was prompt, work was completed efficiently, thoroughly, and timely. everything was explained beforehand during bid in such a way that even someone who knows nothing about the work involved could understand. honest people who know what they are doing. treated our residents with respect. and help to maintain a safe path for them to travel through our main entrance. if you need the services they offer these are the ones to do it. fair pricing as well. only ones I found that actually guarantee the work they do for this type of job."
Elevator pit waterproofing and sealing
Piers under an existing home
Piers under an existing homes middle wall
Solutions/Answers
Response time1 day
Response rate100%
4 neighbors recently requested a quote
Avatar for TMR Excavation
TMR Excavation
New to Angi
Foundation Drainage - Install or Replace

Serving Cosmopolis, WA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

TMR Excavation LLC is a locally owned excavation company serving Southwest Washington with affordable, high-quality dirt work. We specialize in residential projects including Site prep, Shop pads, Driveway installs, land clearing, grading, trenching, drainage solutions, brush removal, and more. With 10 years of experience working for top regional contractors in both heavy civil and residential jobs, we bring the experience to the private sector — offering honest service, transparent process, expert results, and a job done right. From the first estimate to the final grade, we take pride in getting your project done for you!

8 neighbors recently requested a quote
Avatar for Expedeck
Expedeck
5.0(
24
)
Basement Drainage Channels - InstallYard Drainage

Serving Cosmopolis, WA and surrounding areas

In business since 2015

Free estimates

Credit card accepted

"Perfect! Very professional estimator & project manager and the work crew was fantastic. Worked 7 days straight, very punctual and extremely tidy. They consulted with me whenever they had a question or to clarify something to make sure it was exactly how I wanted it. Very high quality- I plan to hire them again in the future to do front yard project with pathways & terracing."
Andrew Farjo
Landscape Lighting with retaining walls
Accent wall / Seating wall with LED lighting
Andrew Farjo
Andrew Farjo

+31

Recommended by100%of homeowners
Avatar for Pacific Water Damage
Pacific Water Damage
4.4(
42
)
Drain Line Breakage - Camera LocateDrain Line Breakage - Camera Locate - For BusinessSump Pump or Interior Foundation Drains - Install

Serving Cosmopolis, WA and surrounding areas

In business since 1988

Free estimates

Emergency services offered

"We received three estimates on this work, and SD Water Damage/Restoration was almost 5K less than the two others, who were also on Angie's List. The workers arrived on time (or slightly early) for the estimate meeting and on work days. The woodwork was outstanding, and the workmen even made small repairs at no cost on several drawers. Our impression of Mr. Bennett, who did the actual woodwork, was that he was a craftsman of the highest quality and took pride in his work on every level. If we had it to do again, we would have draped off the living room, as the sanding required extensive cleaning afterward. We would recommend this company for honesty, integrity and value to anyone."
Recommended by93%of homeowners
Showing 1-10 of 48
French Drains FAQs, answered by experts

Some homeowners use additives every month to help septic system performance, but according to the U.S. Environmental Protection Agency, the effectiveness of septic system and leach field additives is unknown. Further, additives made with organic solvents or alkali chemicals can actually be harmful to the necessary bacteria in a septic system.

Yes, continuing to flush a clogged toilet is not likely to break up the clog. Instead, it will continue to put pressure on the clog while filling the bowl with more water, which can potentially cause the toilet to overflow—leading to an even bigger mess. Rather than repeatedly flushing, use a toilet plunger or plumber’s snake to dislodge the clog.

This depends on the location of the blockage. If the blockage is in your home’s system, anywhere in the system, it is your responsibility as a homeowner. Blockages seldom happen because of items or buildup coming from the city, which means it originates in the home. It becomes the city’s responsibility at the exact point your home’s line distributes waste into the city’s system. The exception is if the problem in your home damages the city lines.  

Regrading your yard can often fix drainage problems. You can also try aerating the lawn to encourage better drainage or install a new drainage system to prevent water from pooling in certain areas.

Bleach isn’t likely to help unclog a sewer line. Bleach isn’t useful in this situation because it won’t dissolve the grime and debris in the clog. Instead, you want to use ingredients that will have a chemical reaction to clear out the buildup, like vinegar or salt and baking soda.

The Cosmopolis, WA homeowners’ guide to french drain services

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