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

Avatar for Clear Flow Drains & Rooter, LLC
Clear Flow Drains & Rooter, LLC
5.0(
5
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessDrain Line Breakage - Camera Locate+1 more

Serving Rainier, OR and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Clear Flow Drains & Rooter LLC is your trusted local expert for professional drain cleaning and sewer services throughout the Portland–Vancouver metro area. We are locally owned, licensed, bonded, and insured, providing reliable service at honest, affordable prices.\n\nOur services include:\n\nResidential drain cleaning starting at $199\n\nMain sewer line cleaning\n\nHydro-jetting\n\nSewer camera inspections\n\nKitchen, bathroom, and laundry drains\n\nCommercial drain cleaning\n\n24/7 emergency drain services\n\nWe take pride in quality workmanship, upfront pricing, and exceptional customer service. No unnecessary upselling, no hidden surprises—just dependable solutions to get your drains flowing again!\n\nClogs Don't Stand a Chance!\n\nCall (360) 360-8462 today for fast, professional service!

3 neighbors recently requested a quote
Avatar for North Creek Construction, LLC
North Creek Construction, LLC
5.0(
44
)
Yard DrainageFoundation Drainage - Install or Replace

Serving Rainier, OR and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"Dave is meticulous, reliable, and honest. He has done a variety of projects for me from building horse fencing to creating a rock base for my new barn, as well as taking down trees, clearing brush, and helping me figure out the location of my septic drain field. One of the things I am most grateful for is his generosity with advising me on projects. I could not have built my barn myself without his expert guidance on topics like choosing a circular saw. He even helped me find a good deal on plywood! Dave has a vast knowledge base and is a super kind person. He will talk through all the options for a project from bare minimum to best possible option, and work within my budget to pick the best solution."
Large wall
Large wall
Retaining Wall
Large wall
Wall Stairs

+13

Response time1 day
Response rate94%
4 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
4.6(
915
)
Basement Drainage Channels - InstallSump Pump or Interior Foundation Drains - Install

Serving Rainier, OR and surrounding areas

Approved (Corporate)

In business since 2021

Free estimates

Warranties offered

Groundworks is the North America's leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we're there with one mission to repair, protect and improve their home. For state licenses visit Groundworks.com/licensing

Basement
Basement
Basement
Concrete
Concrete

+20

8 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for TerraFirma
TerraFirma
4.1(
100
)
Foundation Drainage - Install or ReplaceBasement Drainage Channels - Install

Serving Rainier, OR and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"We needed some posts in our basement replaced with proper footings. TerraFirma was quick to respond and quick to do the work. We are very happy with the result and would recommend."
A System Design Specialist helping a homeowner
Encapsulating a crawl space
Fleet of vehicles in our Portland, Oregon locatio
Loading up our truck for a piering job
Loading up a truck for a waterproofing job

+33

Response time10 mins
Response rate100%
118 neighbors recently requested a quote
Avatar for Kb handyman
Kb handyman
New to Angi
Drain Clog or Blockage - ClearDrain Line Breakage - Camera Locate

Serving Rainier, OR and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Hi, my name is Omar. I provide reliable handyman and home repair services. I focus on quality work, honest communication, and making sure customers are satisfied. I can help with home maintenance, repairs, installations, and general improvement projects. I take pride in being dependable, professional, and respectful of every customer’s home.

3 neighbors recently requested a quote
Avatar for Horizon Construction & Development, LLC
Horizon Construction & Development, LLC
New to Angi
Basement Drainage Channels - Install

Serving Rainier, OR and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Horizon Construction & Development LLC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

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

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.

No, it is not advisable to spray pesticides down the drain in your home. Most drinking water and wastewater treatment systems are not properly equipped to remove pesticides. Should pesticides infiltrate waterways, they can cause harm to plants, fish, or other living things. In most areas, pouring pesticides down the drain is illegal due to the potential harm it causes. 

As a general rule of thumb, it’s best to clean your linear drain every two to three months to prevent debris buildup. However, if you notice it draining slowly or an odor from your drainpipes, it’s best to clear the clogged drain and maintain it more often. If you let a clog go for too long, you may have to invest in the price of professional shower drain cleaning, which costs about $225.

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.

There are several steps you can take to prevent your AC drain from clogging. This includes cleaning the drain line at least every three months, changing the filter every one to three months, and getting your AC serviced annually. Also, if any problems arise with your AC, hire an HVAC technician to deal with them ASAP.

The Rainier, OR homeowners’ guide to french drain services

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