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TRUSTED BY ALLYN, WA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon283
    Verified sump pump installation services reviews

Top-Rated Sump pump installation pros in Allyn - Updated Nov 2026

Avatar for Harts Plumbers, Electricians, & HVAC Technicians
Harts Plumbers, Electricians, & HVAC Technicians
4.6(
1,463
)
Sump Pump - Repair or Replace

Serving Allyn, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Emergency services offered

Warranties offered

"Super friendly, knowledgeable and honest. They came to check out what we thought was a broken sump pump but they got it to work and gave me a ton of advice on additional drainage needs. Highly recommend!"
Prep Area
Waterfall Finished!
Excavation jobs and more!
 install grease trap for commercial kitchen
Delivery of Shoring

+334

42 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Groundworks
Groundworks
4.3(
314
)
Sump Pump or Interior Foundation Drains - Install

Serving Allyn, WA and surrounding areas

Approved (Corporate)

In business since 1995

Free estimates

Emergency services offered

"Gardner came to do an inspection of my basement and provide a quote. I had received other quotes that only provided for a single sump pump install at outrageous prices. He was very thorough, took two hours to measure, inspect, provided videos and explanations on everything, and the quote was shockingly affordable with so much more work I was ecstatic! I am getting a three sump pump with back up battery, and so much more for basically what the others quoted. And, to have the option to finance through Greensky was the cherry on top! If you are in King County, ask for Gardner @ GROUNDWORKS - you won’t regret it!"
Foundation
Foundation
Foundation
Concrete
Concrete

+16

Response time2 days
123 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for TerraFirma
TerraFirma
4.0(
100
)
Sump Pump or Interior Foundation Drains - Install

Serving Allyn, WA and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"The individual who visited and prepared the proposal, as well as the installation team, arrived on time, provided helpful and accurate detail on what work would be performed, how, and when, and executed their work in an organized fashion. The installation crew did a thorough cleanup and completed their work on time. Although the bid was competitive compared to others, the work was still more expensive than I felt it should be considering that work took less than a day and used few materials (aside from a sump pump which accounted for 1/3 of the cost). The only negative was that the financial office was unprepared with the necessary paperwork at the time of the work, causing some slight confusion. However, they did get this sorted out quickly and the minor issue did not at all delay or interrupt the work."
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 time2 hrs
Response rate100%
88 neighbors recently requested a quote
Avatar for Robison Plumbing Service Inc
Robison Plumbing Service Inc
4.3(
112
)
Sump Pump - Repair or ReplaceSump Pump or Interior Foundation Drains - Install

Serving Allyn, WA and surrounding areas

Approved

In business since 1986

Emergency services offered

Warranties offered

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

10 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Mega Mushroom LLC
Mega Mushroom LLC
5.0(
9
)
Sump Pump or Interior Foundation Drains - InstallSump Pump - Repair or Replace

Serving Allyn, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Emergency services offered

Mega Mushroom LLC brings an unmatched commitment to excellence to your plumbing projects. We have 18+ years experience delivering unsurpassed professionalism, expertise, and value. We take pride in providing our customers with personalized customer service, the highest industry standards, and top quality workmanship. References available upon request. Give us a call today!

Newmark Gas Addition
Newmark Gas Addition
Newmark Gas Addition
Newmark Gas Addition
Cistern Install

+8

Response time8 hrs
Response rate100%
39 neighbors recently requested a quote
Avatar for Rain Pros Inc
Rain Pros Inc
4.7(
435
)
Sump Pump or Interior Foundation Drains - Install

Serving Allyn, WA and surrounding areas

In business since 2006

Free estimates

Warranties offered

"As usual, they did an outstanding job. This is the fourth time I've used Rain Pros services (drain tile installation, addition of topsoil to roll and level lawn, over seed existing lawn). Their crew is hardworking, prompt and professional. They are very knowledgeable and skilled. I have never been disappointed."
Before
Sump Pit with Sump Pump
Downspout coming off of a barn
4-inch PVC installed with the black asphalt emulsion and custom made flashing up.
Excavated

+51

Recommended by94%of homeowners
Avatar for Northwest Plumbing & Mechanical
Northwest Plumbing & Mechanical
5.0(
13
)
Sump Pump or Interior Foundation Drains - Install

Serving Allyn, WA and surrounding areas

Free estimates

Credit card accepted

"Ray is an excellent plumber and goes far and away to help you. He installed my sink/dishwasher and refrigerator water line. He worked hard, all day and even came back and checked it afterward to make sure all was in order. His estimate/bid system is easy and fast to use. Excellent Plumber. Highly, Highly recommend."
Plumbing Project
Plumbing Project
Mechanical Room
Plumbing Project
Plumbing Project

+8

Recommended by100%of homeowners
Showing 1-10 of 49
Sump Pump Installation FAQs, answered by experts

Every three to four months, you should clean any dirt and debris off of your sump pump. You should also check the inlet screen (at the bottom of the pump) to make sure that it isn’t blocked. On top of that, you should deep clean your sump pump once per year—or hire a sump pump pro to do it for you.

No. Sump pumps have different capacities, which refers to the volume of water that they can remove. They also come in various horsepower ratings, which measure the size of the pump’s motor. For many homes, 1/3 horsepower is enough. But if you live in an area that floods often, you might need a more powerful model.

When a backflow valve fails, wastewater will flow back into your system, contaminating your drinking water. You’ll immediately notice backflow valve failure from a rotten smell and brown water coming from faucets. Get in contact with a septic pro or a plumber immediately if you suspect this has happened to you.

If your sump pump isn’t engaging, it might be clogged with dirt and debris. Check to see if the fitting lid is loose and has been letting debris in. Next, check the float and make sure it’s not obstructed by rust or gunk, which results from insufficient maintenance. Tangled wires or damaged switching systems can also stop your sump pump from engaging.

If you’re wondering if your home even needs a sump pump, consider whether you’ve struggled with flooding issues in the past. If your house is in a flood-prone area, your yard has poor drainage, or you’ve dealt with any other water problems, then it’s likely well worth it to replace your old sump pump with a new one.

The Allyn, WA homeowners’ guide to sump pump installation services

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