Top-rated septic system repair pros.

Get matched with top septic system repair pros in Seattle, WA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Septic system repair pros in Seattle

Avatar for Alpha Bravo Septic and Drainage, Inc.

Alpha Bravo Septic and Drainage, Inc.

932 South Ridgewood Avenue
4.96(
42
)
Approved Pro

Alpha Bravo Septic and Drainage, Inc.

932 South Ridgewood Avenue
4.96(
42
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
9 years of experience

Welcome to Alpha Bravo Septic and Drainage! We are the experts when it comes to septic systems. Our reputation for quality work, responsiveness, and competitive pricing has been the primary factor in our success. We are committed to client satisfaction in which we serve the client from the developmental stages of a project, to final completion. Through ongoing education, training, and cutting edge technology, we bring the latest innovations to your project. Alpha Bravo Septic and Drainage, welcomes the opportunity to assist you with your particular project needs. Give us a call, you'll be glad you did. We look forward to working with you!

"Louis was extremely responsible. I would definitely recommend it."

Charlotte R on November 2023

Welcome to Alpha Bravo Septic and Drainage! We are the experts when it comes to septic systems. Our reputation for quality work, responsiveness, and competitive pricing has been the primary factor in our success. We are committed to client satisfaction in which we serve the client from the developmental stages of a project, to final completion. Through ongoing education, training, and cutting edge technology, we bring the latest innovations to your project. Alpha Bravo Septic and Drainage, welcomes the opportunity to assist you with your particular project needs. Give us a call, you'll be glad you did. We look forward to working with you!

"Louis was extremely responsible. I would definitely recommend it."

Charlotte R on November 2023


"Do not hire. They will take advantage of you. We had them out to pump our septic system. They told us our drain field needed a jet-vac treatment (quoted at $3600) and possibly a new pump (quoted at $5000). They filed a report with the county saying that our pump was deficient and we got a letter in the mail saying that we had to take care of it. Those prices seemed really expensive to me so I called around. Multiple other septic companies told me not to hire Septic Solutions as they had often get calls like this from customers questioning prices and if the recommended services are really needed. I had { remove company name} Septic come out for an inspection instead. { remove company name} said that everything was working perfectly and if the jet-vac and pump were needed { remove company name} would charge 5000 total. I had to pay for an extra inspection to get things cleared with the county. Do not hire Septic Solutions. They were not honest and preyed on my lack of septic knowledge. I will be using { remove company name} Septic in the future."

Whitney W on August 2025

We pride our company on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Do not hire. They will take advantage of you. We had them out to pump our septic system. They told us our drain field needed a jet-vac treatment (quoted at $3600) and possibly a new pump (quoted at $5000). They filed a report with the county saying that our pump was deficient and we got a letter in the mail saying that we had to take care of it. Those prices seemed really expensive to me so I called around. Multiple other septic companies told me not to hire Septic Solutions as they had often get calls like this from customers questioning prices and if the recommended services are really needed. I had { remove company name} Septic come out for an inspection instead. { remove company name} said that everything was working perfectly and if the jet-vac and pump were needed { remove company name} would charge 5000 total. I had to pay for an extra inspection to get things cleared with the county. Do not hire Septic Solutions. They were not honest and preyed on my lack of septic knowledge. I will be using { remove company name} Septic in the future."

Whitney W on August 2025


"Mark was prompt, knowledgeable, and did a great job. I also appreciated the fair price he gave me."

Brian S on March 2023

Clearing and removal of brush, excavation, grading, underground utilities, storm drainage, ditches, driveway gravel, site preparation for residential home, garage or shop. Emergency work, storm clean up, demolition

"Mark was prompt, knowledgeable, and did a great job. I also appreciated the fair price he gave me."

Brian S on March 2023


Ron Hemley Septic Installations, Inc.

PO Box 305
5.00(
2
)
Approved Pro

Ron Hemley Septic Installations, Inc.

PO Box 305
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
45 years of experience

Ron Hemley Septic Installations, Inc. is 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.

"If you do not make your first call to Hemley's, your making a big mistake. This company stand above the rest for their professionalism, work & business ethic's and their customer service at a fair price. This company should be the first one you call, they will assess and find the best solution which many other contractors wont do. If the scale went to 10, I would give them an 11."

tim m on July 2020

Ron Hemley Septic Installations, Inc. is 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.

"If you do not make your first call to Hemley's, your making a big mistake. This company stand above the rest for their professionalism, work & business ethic's and their customer service at a fair price. This company should be the first one you call, they will assess and find the best solution which many other contractors wont do. If the scale went to 10, I would give them an 11."

tim m on July 2020


"there is a quick summary at the bottom if you want to skip the details. I have received service from this company twice. The first time I had a leak in a bathtub. They removed the drain with a Dremel since it was stuck, then they were about to leave to go to home depot to get plumber's putty, but I had some so they were able to get the part quickly replaced. Maybe this is a bit of a fluke, but that seems like a fairly basic thing to have when going to fix this kind of leak. Overall it was a positive interaction so I didn't think much of it. I recently bought a bidet on amazon. It arrived and I put it in. The problem was that I couldn't connect the toilet to the wall since the hose was a different size then the wall piece. The directions wanted me to remove the valve stem from the wall and replace it with their own. I called A Advanced because when it comes to plumbing, i would rather leave that to the professionals. I had called it a hose bibb because I just didn't know what it was called. someone called me back and asked me to explain in better detail what i needed done. I explained that the "hose bibb" needed to be replaced for me to connect my toilet and that I had the part to do it. from that conversation i received an estimate for $280.87. I was at work that day so couldn't be there, but my wife was there. The plumber that arrived worked for a while on the toilet, then went to home depot to find parts, then came back to the house and worked on it longer, then finally decided that it couldn't be done. We were charged $768.14 for nothing to get fixed. I called them to figure out what happened, I called near closing so they were not able to get a hold of anyone and it waited until the next week for me to talk to someone. I found out that the plumber never received the bag of parts, it was about 2 feet away in the sink. the same plumber came out and looked at it again, and went to home depot again. I was at work and managed to contact him while he was at home depot. I was told that the problem was with the thread depth and that there was no way to install this Chinese toilet without special ordering a part, and if I wanted him to keep working on it he was going to have to charge me more money. I declined. (Its not a Chinese toilet, the company that makes them is out of California.) At this point I was beyond frustrated. I left work early, drove home, went to home depot with the parts I needed to connect, and found a perfect fit within about 10 minutes of looking. I bought a Hex Bushing 3/4 in MIP x 1/2 in FIP for $7.75. I attached it to the included hose and then attached that to the valve stem. and everything worked. Home depot made it easy to find since both connectors were the same type. I just needed to find the appropriate brass adapter. the threads on the toilet hose are identical to the threads on a US water heater. I called A Advanced back and presented my evidence. I was asked what it would take to make this right. I asked for some of my money back. I can understand getting charged for the plumber going out to my house without a full understanding of what is going on. but at no point did he ever tell my wife that he was going way over the estimate. this is the exact response i got back. "I spoke with my COO and my foreman due to the amount of time we spent on the project we are unable to provide any sort of refund. I understand that is not something you want to hear but that is our decision." _____________________________________________ to summarize: - every time this company has come out to my house they have needed to go to Home Depot during the visit. - I was charged nearly 3 times the estimate with no work done and no warning that the bill was piling up. - the plumber was never able to install the toilet despite multiple trips to home depot - I installed the toilet with a $7 adapter i found at home depot in about 10 minutes. (I am not a plumber) - The company chose to not refund me anything If a plumbing company needs to go to home depot every time they do a house call, that is a company that is not prepared at best, and a scam company at worst."

Justin M on December 2024

Through unique technology, experience and compassion, we serve our customers while creating and maintaining a reputation of excellence. We service: Pierce County, King County, Thurston County, and Kitsap County.

"there is a quick summary at the bottom if you want to skip the details. I have received service from this company twice. The first time I had a leak in a bathtub. They removed the drain with a Dremel since it was stuck, then they were about to leave to go to home depot to get plumber's putty, but I had some so they were able to get the part quickly replaced. Maybe this is a bit of a fluke, but that seems like a fairly basic thing to have when going to fix this kind of leak. Overall it was a positive interaction so I didn't think much of it. I recently bought a bidet on amazon. It arrived and I put it in. The problem was that I couldn't connect the toilet to the wall since the hose was a different size then the wall piece. The directions wanted me to remove the valve stem from the wall and replace it with their own. I called A Advanced because when it comes to plumbing, i would rather leave that to the professionals. I had called it a hose bibb because I just didn't know what it was called. someone called me back and asked me to explain in better detail what i needed done. I explained that the "hose bibb" needed to be replaced for me to connect my toilet and that I had the part to do it. from that conversation i received an estimate for $280.87. I was at work that day so couldn't be there, but my wife was there. The plumber that arrived worked for a while on the toilet, then went to home depot to find parts, then came back to the house and worked on it longer, then finally decided that it couldn't be done. We were charged $768.14 for nothing to get fixed. I called them to figure out what happened, I called near closing so they were not able to get a hold of anyone and it waited until the next week for me to talk to someone. I found out that the plumber never received the bag of parts, it was about 2 feet away in the sink. the same plumber came out and looked at it again, and went to home depot again. I was at work and managed to contact him while he was at home depot. I was told that the problem was with the thread depth and that there was no way to install this Chinese toilet without special ordering a part, and if I wanted him to keep working on it he was going to have to charge me more money. I declined. (Its not a Chinese toilet, the company that makes them is out of California.) At this point I was beyond frustrated. I left work early, drove home, went to home depot with the parts I needed to connect, and found a perfect fit within about 10 minutes of looking. I bought a Hex Bushing 3/4 in MIP x 1/2 in FIP for $7.75. I attached it to the included hose and then attached that to the valve stem. and everything worked. Home depot made it easy to find since both connectors were the same type. I just needed to find the appropriate brass adapter. the threads on the toilet hose are identical to the threads on a US water heater. I called A Advanced back and presented my evidence. I was asked what it would take to make this right. I asked for some of my money back. I can understand getting charged for the plumber going out to my house without a full understanding of what is going on. but at no point did he ever tell my wife that he was going way over the estimate. this is the exact response i got back. "I spoke with my COO and my foreman due to the amount of time we spent on the project we are unable to provide any sort of refund. I understand that is not something you want to hear but that is our decision." _____________________________________________ to summarize: - every time this company has come out to my house they have needed to go to Home Depot during the visit. - I was charged nearly 3 times the estimate with no work done and no warning that the bill was piling up. - the plumber was never able to install the toilet despite multiple trips to home depot - I installed the toilet with a $7 adapter i found at home depot in about 10 minutes. (I am not a plumber) - The company chose to not refund me anything If a plumbing company needs to go to home depot every time they do a house call, that is a company that is not prepared at best, and a scam company at worst."

Justin M on December 2024


Freedom Excavation

10470 Battle Point Drive NE
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Freedom Excavation

10470 Battle Point Drive NE
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
14 local quotes requested
6 years of experience

Freedom Excavation is committed to excellence every aspect of our business. We uphold a standard of integrity, bound by fairness, honesty, and professional responsibility. Our distinction is the quality of service we bring to our customers as well as our ability to give you a quick, fair, and accurate estimate. Accurate knowledge of our trade, combined with ability is what makes is true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Freedom Excavation is committed to excellence every aspect of our business. We uphold a standard of integrity, bound by fairness, honesty, and professional responsibility. Our distinction is the quality of service we bring to our customers as well as our ability to give you a quick, fair, and accurate estimate. Accurate knowledge of our trade, combined with ability is what makes is true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.


Avatar for Extra Mile Construction LLC

Extra Mile Construction LLC

8020 ROBE MENZEL RD
5.00(
2
)
Approved Pro

Extra Mile Construction LLC

8020 ROBE MENZEL RD
5.00(
2
)
Approved Pro
25 years of experience
Free onsite estimate

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"Job was done well. Will be having them do more work in the future including installing our septic, drainage and land scraping. Prices are reasonable. Would highly recommend this business. "

Laura L on May 2025

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

"Job was done well. Will be having them do more work in the future including installing our septic, drainage and land scraping. Prices are reasonable. Would highly recommend this business. "

Laura L on May 2025


Avatar for Beacon Plumbing & Mechanical INC

Beacon Plumbing & Mechanical INC

515 7th Ave S
5.00(
6
)
Approved Pro

Beacon Plumbing & Mechanical INC

515 7th Ave S
5.00(
6
)
Approved Pro
Customers say: Quick response
31 local quotes requested
26 years of experience

Beacon Plumbing is 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.

"The tech explained everything and was very polite."

Michelle B on April 2025

Beacon Plumbing is 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.

"The tech explained everything and was very polite."

Michelle B on April 2025


Lee’s Sanitation Service Inc

PO Box 930
4.74(
70
)
Approved Pro

Lee’s Sanitation Service Inc

PO Box 930
4.74(
70
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
199 local quotes requested

Founded in 1950, Lee’s Sanitation Service has been a leader in sanitation services in Washington’s King and Pierce Counties for more than six decades. We are a small local business with few employees dedicated to serving our community and protecting our environment. Additional phones: Pierce County: 253-777-1750, King County: 253-245-1080.

"James from Lee's Sanitation Service showed up exactly on time and pumped our 1100 gal solids tank. It was a quick and easy job and the price was optimal."

Daryl H on October 2020

Founded in 1950, Lee’s Sanitation Service has been a leader in sanitation services in Washington’s King and Pierce Counties for more than six decades. We are a small local business with few employees dedicated to serving our community and protecting our environment. Additional phones: Pierce County: 253-777-1750, King County: 253-245-1080.

"James from Lee's Sanitation Service showed up exactly on time and pumped our 1100 gal solids tank. It was a quick and easy job and the price was optimal."

Daryl H on October 2020


Avatar for Roto-Rooter Plumbing & Water Cleanup

Roto-Rooter Plumbing & Water Cleanup

1040 NE Hostmark St
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Roto-Rooter Plumbing & Water Cleanup

1040 NE Hostmark St
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
60 local quotes requested
90 years of experience

Roto-Rooter is a fully licensed and insured plumbing company providing 24/7 plumbing services, drain cleaning, and water damage cleanup. More people depend on Roto-Rooter than any other plumbing company in North America.

Roto-Rooter is a fully licensed and insured plumbing company providing 24/7 plumbing services, drain cleaning, and water damage cleanup. More people depend on Roto-Rooter than any other plumbing company in North America.

...
Showing 1-10 of 283
FAQs for septic system repair projects in Seattle, WA

You should have your septic tank inspected at least once every one to three years. Regular inspections help catch minor issues before they become major problems, ensuring your system operates efficiently and extends its lifespan. You can also have your pro take care of routine septic system maintenance tasks at the same time as your inspection.

A septic tank must be inspected before buying a home to ensure the system is sound and compliant with local regulations. A comprehensive inspection evaluates all critical components and detects hidden faults that could lead to expensive repairs. This detailed review protects your investment by verifying the system’s integrity and reliability.

A septic tank's leach field fails when it encounters system overload and deteriorating conditions. Excess water usage beyond the field’s capacity and environmental stress lead to hydraulic failure. Aging infrastructure and insufficient maintenance further contribute to failure. Distributing water use evenly and scheduling regular maintenance, including enzyme treatments when necessary, preserve the leach field’s integrity.

A septic system lasts between 20 and 30 years. Steel tanks function for 15 to 20 years, concrete tanks operate for 20 to 40 years, and fiberglass or plastic tanks remain durable for 30 to 40 years. Consistent maintenance, including regular pumping and inspections, extends these lifespans by preventing buildup and structural damage, ensuring reliable long-term performance.

A failing septic system presents clear signs such as slow-draining fixtures, foul odors at or around the leach field, and overly green patches of grass. Additional indicators include persistent toilet flushing problems, standing water near the system, and noticeable gurgling noises from pipes. These symptoms reveal blockages, structural damage, or leaks. Immediate professional evaluation is essential to address these issues and prevent extensive repair costs.