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Percolation testing pros in Covington

Avatar for Wu Construction
Wu Construction
13333 Lake City Way NE
4.64(
230
)
•
Approved Pro
Wu Construction
13333 Lake City Way NE
4.64(
230
)
•
Approved Pro
Customers say: Super punctual
24 local quotes requested
42 years of experience

Wu Construction Inc, specializes in drainage and foundation systems construction and repair. Since our founding in 1983, we have successfully completed thousands of projects for homeowners and businesses throughout the Northwest. We are the best in our industry, and well regarded by our customers for our excellent service. We are lauded for our speedy responses to inquiries, our efficiency and the quality of our work.

"Great communication and thorough work. Would hire again."

Brian J on April 2025

Wu Construction Inc, specializes in drainage and foundation systems construction and repair. Since our founding in 1983, we have successfully completed thousands of projects for homeowners and businesses throughout the Northwest. We are the best in our industry, and well regarded by our customers for our excellent service. We are lauded for our speedy responses to inquiries, our efficiency and the quality of our work.

"Great communication and thorough work. Would hire again."

Brian J on April 2025


Avatar for State Plumbing Utilities LLC
State Plumbing Utilities LLC
5.00(
4
)
•
Approved Pro
State Plumbing Utilities LLC
5.00(
4
)
•
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
82 local quotes requested

We specialize in plumbing services, repairs, inspections, installations, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"The job went very well. John and his assistant completed the replacement the next day and only took an hour from start to finish. The cost was much less than other estimates. Be sure you get an estimate from this company if you need plumbing work."

Dale R on January 2025

We specialize in plumbing services, repairs, inspections, installations, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"The job went very well. John and his assistant completed the replacement the next day and only took an hour from start to finish. The cost was much less than other estimates. Be sure you get an estimate from this company if you need plumbing work."

Dale R on January 2025


Avatar for Hardie Plumbing
Hardie Plumbing
5012 Lacey Boulevard SE
5.00(
23
)
•
Approved Pro
Hardie Plumbing
5012 Lacey Boulevard SE
5.00(
23
)
•
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
76 local quotes requested

Hardie Plumbing from the moment you talk with their No Hard Selling Friendly office Staff You will see why we have High Reviews from our Awesome Customers. We truly care about You and Your Home. We care that our Plumbing Service is the Best Part of your Day, Week or sometimes Year. We Love to provide exceptional service and even better Craftsmanship. Nobody does it better then Hardie. We are able to offer incredible prices way under the competition because we are a small local owned company. Once You have used Hardie Plumbing You Have a Plumber for Life..

"It went great!"

Teena M on October 2024

Hardie Plumbing from the moment you talk with their No Hard Selling Friendly office Staff You will see why we have High Reviews from our Awesome Customers. We truly care about You and Your Home. We care that our Plumbing Service is the Best Part of your Day, Week or sometimes Year. We Love to provide exceptional service and even better Craftsmanship. Nobody does it better then Hardie. We are able to offer incredible prices way under the competition because we are a small local owned company. Once You have used Hardie Plumbing You Have a Plumber for Life..

"It went great!"

Teena M on October 2024


Avatar for Washington Energy Services
Washington Energy Services
3909 196th St SW
4.51(
958
)
•
Approved Pro
Washington Energy Services
3909 196th St SW
4.51(
958
)
•
Approved Pro
Customers say: Super punctual
246 local quotes requested
68 years of experience

Washington Energy Services has been helping homeowners throughout Western Washington save money and live more comfortably since 1957. As one of the largest home improvement companies in the Seattle-Tacoma area, we are able to provide you with top-quality products and services, installed by our professional craftsmen. Our free in-home estimates ensure you get the right product for your home. We'll be with you through all aspects of your project from the purchase decision, expert installation, quality maintenance and service, and even warranty work should you need it. We assist with permits and rebates, too. Give Washington Energy Services a call today to learn more or to schedule your service.

"This review is long overdue in my praise of Washington Energy Services for their customer service, pricing and workmanship ! My first interaction was in 1999 when they installed windows throughout my house. They are still in excellent condition. I might note I called them over 20 years later to inquire on how I could repair a broken slider and they sent someone right out, charging a very nominal amount to repair it. In 2020, I needed to replace my hot water tank, and the extremely knowledgeable Christy presented several options, answering my many questions. I settled on one with a booster that seemed to best fit my needs. Finally, in December 2023, I purchased a new gas furnace from WES. I had a minor issue with a fan switch and they responded quickly to rectify the situation. Within the past two months, I seemed to be having an issue with my thermostat (something they had not installed), and the manager, Greg, came out twice with his crew to explore the problem. Today they installed a new thermostat FREE OF CHARGE! Their excellent response and customer service is beyond any company I have hired. And I particularly love that they are family owned and have been around for decades. Their employees seem to be there for the long haul, which speaks highly of the owner. I refer all my friends and family and I won't go anywhere else for services that they offer. Many thanks to the staff I have interacted with over the past 25 years!"

Joan K on March 2025

Washington Energy Services has been helping homeowners throughout Western Washington save money and live more comfortably since 1957. As one of the largest home improvement companies in the Seattle-Tacoma area, we are able to provide you with top-quality products and services, installed by our professional craftsmen. Our free in-home estimates ensure you get the right product for your home. We'll be with you through all aspects of your project from the purchase decision, expert installation, quality maintenance and service, and even warranty work should you need it. We assist with permits and rebates, too. Give Washington Energy Services a call today to learn more or to schedule your service.

"This review is long overdue in my praise of Washington Energy Services for their customer service, pricing and workmanship ! My first interaction was in 1999 when they installed windows throughout my house. They are still in excellent condition. I might note I called them over 20 years later to inquire on how I could repair a broken slider and they sent someone right out, charging a very nominal amount to repair it. In 2020, I needed to replace my hot water tank, and the extremely knowledgeable Christy presented several options, answering my many questions. I settled on one with a booster that seemed to best fit my needs. Finally, in December 2023, I purchased a new gas furnace from WES. I had a minor issue with a fan switch and they responded quickly to rectify the situation. Within the past two months, I seemed to be having an issue with my thermostat (something they had not installed), and the manager, Greg, came out twice with his crew to explore the problem. Today they installed a new thermostat FREE OF CHARGE! Their excellent response and customer service is beyond any company I have hired. And I particularly love that they are family owned and have been around for decades. Their employees seem to be there for the long haul, which speaks highly of the owner. I refer all my friends and family and I won't go anywhere else for services that they offer. Many thanks to the staff I have interacted with over the past 25 years!"

Joan K on March 2025


Avatar for Seatown Electric Plumbing Heating & Air
Seatown Electric Plumbing Heating & Air
4200 78th St SW
4.80(
1,335
)
•
Approved Pro
Seatown Electric Plumbing Heating & Air
4200 78th St SW
4.80(
1,335
)
•
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
1560 local quotes requested

As a provider of essential services here in the Puget Sound Region, Seatown Electric Plumbing Heating & Air remains open to serve you. To ensure the safety of our customers our technicians' health is monitored closely and we are following the highest safety recommendations, including the use of masks and protective gloves. The health and wellness of our customers and employees will always come first. We are here for you! Seatown provides Electrical, Plumbing, Heating, and A/C services in the Greater Puget Sound region, concentrating in King and Snohomish county. With our customer satisfaction guarantee, you can rest assured that your system will outlast industry standards, providing safety, and comfort for your home, for many years to come. You will never have to search for a new electrical, plumbing or heating and air contractor again. That is our promise. Seatown continues to lead Angie's List, with overall "A" reviews, by serving one customer at a time and giving top-notch service. We hope to build long-lasting customer relationships, throughout Washington State. Our world-class technicians will show up to your door in clean uniforms, with visible ID and state certification, trained to over-exceed your expectations, and never leaving a mess behind. We are Seatown Electric Plumbing Heating And Air, Washington's all in one contractor.

"I asked for someone to come and find out what was causing our ceiling light to flicker. Technician Colby determined we still have some knob and tube wiring that was causing LED lights not to work consistently. He also checked our electrical outlets and other light fixtures and determined most of the rest of our wiring is ok. He was here to troubleshoot. Someone will need to return to do the work later."

Katy C on September 2023

As a provider of essential services here in the Puget Sound Region, Seatown Electric Plumbing Heating & Air remains open to serve you. To ensure the safety of our customers our technicians' health is monitored closely and we are following the highest safety recommendations, including the use of masks and protective gloves. The health and wellness of our customers and employees will always come first. We are here for you! Seatown provides Electrical, Plumbing, Heating, and A/C services in the Greater Puget Sound region, concentrating in King and Snohomish county. With our customer satisfaction guarantee, you can rest assured that your system will outlast industry standards, providing safety, and comfort for your home, for many years to come. You will never have to search for a new electrical, plumbing or heating and air contractor again. That is our promise. Seatown continues to lead Angie's List, with overall "A" reviews, by serving one customer at a time and giving top-notch service. We hope to build long-lasting customer relationships, throughout Washington State. Our world-class technicians will show up to your door in clean uniforms, with visible ID and state certification, trained to over-exceed your expectations, and never leaving a mess behind. We are Seatown Electric Plumbing Heating And Air, Washington's all in one contractor.

"I asked for someone to come and find out what was causing our ceiling light to flicker. Technician Colby determined we still have some knob and tube wiring that was causing LED lights not to work consistently. He also checked our electrical outlets and other light fixtures and determined most of the rest of our wiring is ok. He was here to troubleshoot. Someone will need to return to do the work later."

Katy C on September 2023


Avatar for Sewer Friendly, LLC
Sewer Friendly, LLC
23930 Highway 99
4.73(
75
)
•
Approved Pro
Sewer Friendly, LLC
23930 Highway 99
4.73(
75
)
•
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
18 local quotes requested

Sewer Friendly is a local family owned and run business. We are dedicated to excellent customer service and have the best equipment in order to achieve this goal. Currently Sewer Friendly has pipe bursting equipment which allows us to change water and sewer lines with out digging up your yard. It is like we were never there. We are a sewer business with very competitive pricing. Mike Petelle, owner, was a plumber in Seattle for 15 years and his experience and knowledge have been handed down to the entire crew. We are also a Registered Side Sewer Contractor. Feel at ease in our hands.

"What a great team, from first contact with Shannon, who was helpful and attentive, to Nina, who was friendly efficient and responsive, and the amazing, hard working, efficient and talented team of Ellias, Kenneth, Noa and Alexis, the project was done quickly, painlessly and tidily. I would recommend their services to anyone. Competitively priced too!"

Dominic W on February 2024

Sewer Friendly is a local family owned and run business. We are dedicated to excellent customer service and have the best equipment in order to achieve this goal. Currently Sewer Friendly has pipe bursting equipment which allows us to change water and sewer lines with out digging up your yard. It is like we were never there. We are a sewer business with very competitive pricing. Mike Petelle, owner, was a plumber in Seattle for 15 years and his experience and knowledge have been handed down to the entire crew. We are also a Registered Side Sewer Contractor. Feel at ease in our hands.

"What a great team, from first contact with Shannon, who was helpful and attentive, to Nina, who was friendly efficient and responsive, and the amazing, hard working, efficient and talented team of Ellias, Kenneth, Noa and Alexis, the project was done quickly, painlessly and tidily. I would recommend their services to anyone. Competitively priced too!"

Dominic W on February 2024


Avatar for South West Plumbing, Heating, Air, & Electric
South West Plumbing, Heating, Air, & Electric
4150 Lind Avenue Southwest
3.30(
150
)
•
Approved Pro
South West Plumbing, Heating, Air, & Electric
4150 Lind Avenue Southwest
3.30(
150
)
•
Approved Pro
52 local quotes requested
43 years of experience

We have been serving the Greater Puget Sound area since 1982. Today we serve all of King, Pierce, and Snohomish counties. South West focuses on customer service as the differentiating factor between our company and other plumbing, heating, air, and electric contractors in the area. Our expertise, support staff, and quality work will earn your business for years to come.

"Third day in a row that S W Plumbing set up an appointment with me and then canceled before the end of day. So, I set time in my schedule for them for three days, but they were no-shows. I say South West Plumbing the one "NOT" to call."

Doug K on November 2024

We have been serving the Greater Puget Sound area since 1982. Today we serve all of King, Pierce, and Snohomish counties. South West focuses on customer service as the differentiating factor between our company and other plumbing, heating, air, and electric contractors in the area. Our expertise, support staff, and quality work will earn your business for years to come.

"Third day in a row that S W Plumbing set up an appointment with me and then canceled before the end of day. So, I set time in my schedule for them for three days, but they were no-shows. I say South West Plumbing the one "NOT" to call."

Doug K on November 2024


Avatar for Rainier Rooter & Plumbing
Rainier Rooter & Plumbing
3031 SW 110th St
New on HomeAdvisorNew on Angi•
Approved Pro
Rainier Rooter & Plumbing
3031 SW 110th St
New on AngiNew on HomeAdvisor•
Approved Pro
55 local quotes requested
2 years of experience

We are your local plumber! We are born and bred in this beautiful area. Our goal is to give everyone a 5 Star Experience with our services. When you contact us, you will speak directly with one of the 2 owners of the company.

We are your local plumber! We are born and bred in this beautiful area. Our goal is to give everyone a 5 Star Experience with our services. When you contact us, you will speak directly with one of the 2 owners of the company.


Avatar for Schmitty's Plumbing
Schmitty's Plumbing
20522 NE 78th St
4.77(
48
)
•
Approved Pro
Schmitty's Plumbing
20522 NE 78th St
4.77(
48
)
•
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
28 local quotes requested

We offer quality products at reasonable prices because we want to satisfy your requirements without subjecting you to needless hassles or expenses. We are committed to the values of honesty, integrity, and safety. We are a fully licensed organization, so you will not be taking any needless risks when you engage our services. Plumbing installation service from us will enable you to get a new toilet, sink, water heater, or any other type of plumbing fixture or appliance that you desire.

"I'm very happy with the service received from Schmitty's plumbing. When I called them about a leaky shower faucet, they were quick to respond and even quicker to solve the problem. They also offered to look at any other issues, and quickly fixed a garbage disposal issue as well. The price of the service visit was exactly as quoted over the phone, and was reasonable."

Cory B on August 2024

We offer quality products at reasonable prices because we want to satisfy your requirements without subjecting you to needless hassles or expenses. We are committed to the values of honesty, integrity, and safety. We are a fully licensed organization, so you will not be taking any needless risks when you engage our services. Plumbing installation service from us will enable you to get a new toilet, sink, water heater, or any other type of plumbing fixture or appliance that you desire.

"I'm very happy with the service received from Schmitty's plumbing. When I called them about a leaky shower faucet, they were quick to respond and even quicker to solve the problem. They also offered to look at any other issues, and quickly fixed a garbage disposal issue as well. The price of the service visit was exactly as quoted over the phone, and was reasonable."

Cory B on August 2024


Avatar for Eco Electric, Plumbing, Heating and Air
Eco Electric, Plumbing, Heating and Air
126 S Spokane St
3.92(
25
)
•
Approved Pro
Eco Electric, Plumbing, Heating and Air
126 S Spokane St
3.92(
25
)
•
Approved Pro
Customers say: True professional
146 local quotes requested
13 years of experience

If you are looking for electrical, plumbing, and HVAC services in Seattle and beyond, Eco Electric, Plumbing, Heating and Air has all of the talent and tools needed to provide a high-quality service and 100% customer satisfaction. Please feel free to give us a call at (206) 479-0404 to set up your appointment with our wonderful technicians! With multiple years of combined electrical, plumbing, and HVAC experience, this team has answers to all of your questions and solutions to all of your problems. Company trucks are fully stocked with the tools and equipment to handle any electrical, plumbing, or HVAC services needed. We can perform services and repairs on nearly all residential and commercial spaces. For professional service with a smile, call the dedicated team at Eco Electric, Plumbing, Heating, and Air today.

"In 2020 Eco Electric installed a Whole House Fan in our home. It has worked well for us and helps cool our home in the summer. Recently it stopped working. I called Eco and they sent Kyle out to diagnose our problem. Kyle was able to quickly isolate the problem to wiring in a recently installed smoke detector. He was able to fix the matter and get us back up and running. I do recommend Eco."

Andrew T on April 2025

If you are looking for electrical, plumbing, and HVAC services in Seattle and beyond, Eco Electric, Plumbing, Heating and Air has all of the talent and tools needed to provide a high-quality service and 100% customer satisfaction. Please feel free to give us a call at (206) 479-0404 to set up your appointment with our wonderful technicians! With multiple years of combined electrical, plumbing, and HVAC experience, this team has answers to all of your questions and solutions to all of your problems. Company trucks are fully stocked with the tools and equipment to handle any electrical, plumbing, or HVAC services needed. We can perform services and repairs on nearly all residential and commercial spaces. For professional service with a smile, call the dedicated team at Eco Electric, Plumbing, Heating, and Air today.

"In 2020 Eco Electric installed a Whole House Fan in our home. It has worked well for us and helps cool our home in the summer. Recently it stopped working. I called Eco and they sent Kyle out to diagnose our problem. Kyle was able to quickly isolate the problem to wiring in a recently installed smoke detector. He was able to fix the matter and get us back up and running. I do recommend Eco."

Andrew T on April 2025

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Percolation testing services FAQs

The average cost to snake your main sewer line is around $250 for a simple snake. Most sewer line specialists charge between $45 and $200 per hour for main sewer line snaking, so the time involved plays a major role. The price you’ll pay will depend on the severity of the clog, the item causing the backup, how long it takes to remove the item, and more. A more severe issue that requires unclogging a main sewer line will cost $3,100 on average.

The average cost to unclog a drain is around $200, with prices ranging between $110 and $800, depending on the type of drain and the extent of the clog. Hiring a professional to snake the toilet or sink will usually cost between $110 and $275, a bathtub or shower typically costs around $225, and a main line clog can cost between $100 and $800 based on the severity of the clog and how far beyond the access point the clog sits. Since the labor involved varies, most plumbers will charge an hourly rate for drain cleaning.

Yes, most states require plumbers to be licensed, and for good reason. Hiring an unlicensed plumber could lead to poor quality work, costly future expenses, and potential code violations. 

As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include: 

  • The owner, principal, or relevant manager passed a criminal background check

  • Required to have applicable state and local licenses

  • Maintain an average star rating of 3.0 or better on our network, if they have at least one review

  • Paying to advertise their services

  • Meeting any other eligibility criteria required by Angi

Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.

Yes, most states require septic tank installers to have a license, and for good reason. Hiring an unlicensed septic tank pro could lead to poor quality work, costly future expenses, and potential code violations. 

As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include: 

  • The owner, principal, or relevant manager passed a criminal background check

  • Required to have applicable state and local licenses

  • Maintain an average star rating of 3.0 or better on our network, if they have at least one review

  • Paying to advertise their services

  • Meeting any other eligibility criteria required by Angi

Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.

The cost of septic tank repair is $1,775 for the average homeowner. However, depending on a few elements, you might pay as little as $170 or as much as $6,100. Location, repair type, and tank material all determine the final cost. For example, replacing the septic tank filter can be as little as $200 to $300. However, repairing septic lines costs more, averaging around $1,500.

The homeowners guide to percolation testing services
From average costs to expert advice, get all the answers you need to get your job done.
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Mar 24, 2025
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Apr 23, 2025
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From foam to fiberglass, the best pipe insulation to prevent freezing depends on, well, the pipes. This guide will help you choose.
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