Top-rated septic system installers and replacers.

Get matched with top septic system installers and replacers in your area

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.

Septic system installers and replacers in Happy Valley

Avatar for Ralston Excavating, Inc.
Ralston Excavating, Inc.
P.O. Box 518
5.00(
14
)
Approved Pro
Ralston Excavating, Inc.
P.O. Box 518
5.00(
14
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

At Ralston Excavating, Inc, we believe in providing an outstanding experience for our customers. We are an company with over 10 years of experience repairing, installing, and replacing septic systems. We value quality, integrity and professionalism. We look forward to your call.

"Sean came in, answered our question and concerns about our project. Very professional and easy to work with. Sean and Jerry got right to work and put us back on track. Great to have a contractor do what they said that they would do and then do more. AND I got a new gravel pad for our RV as well. We will definitely use Ralston Excavating on our next project when it comes up."

Janet M on March 2023

At Ralston Excavating, Inc, we believe in providing an outstanding experience for our customers. We are an company with over 10 years of experience repairing, installing, and replacing septic systems. We value quality, integrity and professionalism. We look forward to your call.

"Sean came in, answered our question and concerns about our project. Very professional and easy to work with. Sean and Jerry got right to work and put us back on track. Great to have a contractor do what they said that they would do and then do more. AND I got a new gravel pad for our RV as well. We will definitely use Ralston Excavating on our next project when it comes up."

Janet M on March 2023


New Gen Trucking & Excavation, LLC
24315 Northeast Boones Ferry Road
5.00(
3
)
Approved Pro
New Gen Trucking & Excavation, LLC
24315 Northeast Boones Ferry Road
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

New-Gen Trucking and Excavation LLC was founded in 2020; it is a first generation company seeking to strive with quality and professional work. With years of excavation, utility, and concrete work in the founder's background, we stand behind our work to provide the best finish product possible. As a family-owned business, we continue to grow a name for our business here in the NW, making customer satisfaction our number one goal. We're fully licensed, insured, and bonded for your peace of mind and protection. No job is too big or too small for us - we'll tackle anything and take pride in not turning customers away. Give us a call for a free estimate.

"They are great to work with and we will be working with them again soon."

Brian T on July 2023

New-Gen Trucking and Excavation LLC was founded in 2020; it is a first generation company seeking to strive with quality and professional work. With years of excavation, utility, and concrete work in the founder's background, we stand behind our work to provide the best finish product possible. As a family-owned business, we continue to grow a name for our business here in the NW, making customer satisfaction our number one goal. We're fully licensed, insured, and bonded for your peace of mind and protection. No job is too big or too small for us - we'll tackle anything and take pride in not turning customers away. Give us a call for a free estimate.

"They are great to work with and we will be working with them again soon."

Brian T on July 2023


Avatar for Goodman Sanitation Inc
Goodman Sanitation Inc
1009 NE Harlow Rd
4.75(
2
)
Approved Pro
Goodman Sanitation Inc
1009 NE Harlow Rd
4.75(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
32 local quotes requested

Goodman Sanitation dba Goodman Septic Services 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 interest and make their concerns the basis of our business.

"We've been using them for over 30 years."

Jack W on May 2023

Goodman Sanitation dba Goodman Septic Services 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 interest and make their concerns the basis of our business.

"We've been using them for over 30 years."

Jack W on May 2023


Avatar for Andrew Excavation & Septic, LLC
Andrew Excavation & Septic, LLC
2633 Northeast Sonora Drive
5.00(
2
)
Approved Pro
Andrew Excavation & Septic, LLC
2633 Northeast Sonora Drive
5.00(
2
)
Approved Pro
Customers say: Quick response
6 years of experience
Free onsite estimate

We are committed to understanding your unique needs and creating a plan to deliver a quality finished project. We pride ourselves on exceptional communication to provide understanding of all variables. In the PNW, drainage is the name of the game. We take on a variety of projects from preparing the site to build, to horse arena drainage systems, to septic system install. We are seasoned in working with utilities for power, water septic and to deliver to the site. As well as road building. Feel free to call with questions or concerns to ensure a good fit for all. 503830848

"I would give Andrew highest marks in every catagory; communication, holding to his schedule, level of expertise and quality of work."

Frank G on December 2024

We are committed to understanding your unique needs and creating a plan to deliver a quality finished project. We pride ourselves on exceptional communication to provide understanding of all variables. In the PNW, drainage is the name of the game. We take on a variety of projects from preparing the site to build, to horse arena drainage systems, to septic system install. We are seasoned in working with utilities for power, water septic and to deliver to the site. As well as road building. Feel free to call with questions or concerns to ensure a good fit for all. 503830848

"I would give Andrew highest marks in every catagory; communication, holding to his schedule, level of expertise and quality of work."

Frank G on December 2024


G&G BUILDING LLC
17402 SE Decker Road
5.00(
2
)
Approved Pro
G&G BUILDING LLC
17402 SE Decker Road
5.00(
2
)
Approved Pro
1 years of experience
Free onsite estimate

G&G BUILDING LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 12 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today! 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.

"New construction home foundation dig out was done by G&G building, great communication skills and acted fast did a great job working with the concrete contractor as well."

kobe m on February 2025

G&G BUILDING LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 12 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today! 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.

"New construction home foundation dig out was done by G&G building, great communication skills and acted fast did a great job working with the concrete contractor as well."

kobe m on February 2025


Avatar for Shiloh Water Systems
Shiloh Water Systems
*Now Open* In
4.72(
29
)
Approved Pro
Shiloh Water Systems
*Now Open* In
4.72(
29
)
Approved Pro
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
32 local quotes requested

Shiloh Water Systems is a family business specializing in residential and water systems and water filtration company with over 40 years’ experience specializing in well and water system design, service and installation of pumps, pressure tanks, storage systems, water treatment and filtration systems, including drinking water systems. We provide 24/7 emergency service and are committed to providing innovative products and exceptional customer service at a competitive price. Shiloh Water Systems is the authorized independent Kinetico dealer for the Willamette Valley. CCB# 164951

"Great price, professional service, great communication and education and wonderful company. Would recommend all day long!"

Breanne W on April 2024

Shiloh Water Systems is a family business specializing in residential and water systems and water filtration company with over 40 years’ experience specializing in well and water system design, service and installation of pumps, pressure tanks, storage systems, water treatment and filtration systems, including drinking water systems. We provide 24/7 emergency service and are committed to providing innovative products and exceptional customer service at a competitive price. Shiloh Water Systems is the authorized independent Kinetico dealer for the Willamette Valley. CCB# 164951

"Great price, professional service, great communication and education and wonderful company. Would recommend all day long!"

Breanne W on April 2024


Avatar for SPEEDY SEPTIC
SPEEDY SEPTIC
23020 SE EAGLE CREEK RD
4.51(
85
)
Approved Pro
SPEEDY SEPTIC
23020 SE EAGLE CREEK RD
4.51(
85
)
Approved Pro
Customers say: Quick response
281 local quotes requested
42 years of experience

Our goal at Speedy Septic is to show up when you need us, address the issue at hand, but most importantly, leave you with confidence that your septic system will work properly moving forward. How do we do this? We at Speedy view education and improvement as a religion, invest in and utilize the latest tools and technology, and keep our state of the art vacuum trucks stocked with every part that could potentially be needed. 41 years and 4 generations of experience and thousands of reviews averaging 4.8 stars is the resume you want looking after your sewer system. We have live people ready to answer your call, a truck stocked and warmed up with a smiling Technician ready to roll. Give us a call now!

"WAAAAAY OVERPRICED!!! And false diagnosis that could have cost me WAY MORE!!!"

Sarah W on March 2021

Our goal at Speedy Septic is to show up when you need us, address the issue at hand, but most importantly, leave you with confidence that your septic system will work properly moving forward. How do we do this? We at Speedy view education and improvement as a religion, invest in and utilize the latest tools and technology, and keep our state of the art vacuum trucks stocked with every part that could potentially be needed. 41 years and 4 generations of experience and thousands of reviews averaging 4.8 stars is the resume you want looking after your sewer system. We have live people ready to answer your call, a truck stocked and warmed up with a smiling Technician ready to roll. Give us a call now!

"WAAAAAY OVERPRICED!!! And false diagnosis that could have cost me WAY MORE!!!"

Sarah W on March 2021


Avatar for A AFFORDABLE SEPTIC SERVICE LLC
A AFFORDABLE SEPTIC SERVICE LLC
PO BOX 818
4.56(
103
)
Approved Pro
A AFFORDABLE SEPTIC SERVICE LLC
PO BOX 818
4.56(
103
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
548 local quotes requested

FREE ESTIMATES - call (503) 682-1929 today! We offer 24/7 emergency services. Since 1987, A-Affordable Septic Service has been providing high-quality septic system repairs and installations to Wilsonville, OR and surrounding areas. A-Affordable Septic Service provides the best in septic system services. Having your home or business septic system regularly maintained and cleaned increases its efficiency and saves on your utility bills. Call us today at A-Affordable Septic Service and we’ll make sure your septic system is properly serviced and maintained by our experienced technicians. DEQ LICENSE 37918 CCB 158246

"I put in a request for septic tank pumping and the first contact (from other company) was crazy high. A Affordable Septic gave a quote that was extremely reasonable and they surely live up to the name. Marty came out this morning; on time or even a bit early. He was extremely kind and helpful. I would definitely recommend this company for anyone needing septic service. I pray God's Blessings on this company and its employees. John 3:16"

brad z on November 2024

FREE ESTIMATES - call (503) 682-1929 today! We offer 24/7 emergency services. Since 1987, A-Affordable Septic Service has been providing high-quality septic system repairs and installations to Wilsonville, OR and surrounding areas. A-Affordable Septic Service provides the best in septic system services. Having your home or business septic system regularly maintained and cleaned increases its efficiency and saves on your utility bills. Call us today at A-Affordable Septic Service and we’ll make sure your septic system is properly serviced and maintained by our experienced technicians. DEQ LICENSE 37918 CCB 158246

"I put in a request for septic tank pumping and the first contact (from other company) was crazy high. A Affordable Septic gave a quote that was extremely reasonable and they surely live up to the name. Marty came out this morning; on time or even a bit early. He was extremely kind and helpful. I would definitely recommend this company for anyone needing septic service. I pray God's Blessings on this company and its employees. John 3:16"

brad z on November 2024


CRESTWELL CONSTRUCTION
23302 S ENGSTROM RD P.O.Box 517
No reviews
CRESTWELL CONSTRUCTION
23302 S ENGSTROM RD P.O.Box 517
No reviews
48 years of experience

Serving our customers excavation needs since 1977

Serving our customers excavation needs since 1977


SKYLES DRILLING INC
21912 S Beavercreek Rd
4.00(
4
)
SKYLES DRILLING INC
21912 S Beavercreek Rd
4.00(
4
)
Customers say: Terrific value
77 years of experience

We provide prompt, professional, quality service. Estimates are free, including for properties you are looking to buy. We also welcome doing research to locate existing well logs at no charge. We are members of the Oregon Groundwater Association. We have been serving Oregon since 1948.

We provide prompt, professional, quality service. Estimates are free, including for properties you are looking to buy. We also welcome doing research to locate existing well logs at no charge. We are members of the Oregon Groundwater Association. We have been serving Oregon since 1948.

...
Showing 1-10 of 178

FAQs for septic system installation and replacement projects in Happy Valley, OR

A failed backflow preventer can let contaminants seep into your drinking water. Watch for leaks around the valve, sudden pressure drops, slow drains, musty odors, or rusty-looking water. If you spot these red flags, call a licensed plumber right away for an inspection and repair. Keeping up with annual tests is the best way to catch problems early and protect your home’s water supply.

You might need a backflow preventer if you have features like irrigation systems, pools, or other water elements that could contaminate your water supply. Having a backflow preventer will help protect the safety of your water supply. Due to higher contamination risks, commercial and industrial properties are required to have backflow preventers.

Backflow preventers and backwater valves serve distinct roles in protecting your home’s water systems. A backflow preventer stops water from reversing in your main supply to keep clean water uncontaminated, while a backwater valve is integrated into your drainage system to block sewage backup during heavy rainfall or overflow. Each device is designed to address specific flow challenges and safeguard your property.

The time it takes to install a backflow preventer depends on the type of system. A plumber can install a simple backflow preventer, like those for a garden hose or appliance, in less than an hour. Installing a backflow preventer for a complex system can take up to a full day.

If you’re already breaking up your floor to install a sewer backflow preventer, it’s a smart move to tackle other plumbing upgrades while you’ve got easy access to the pipes. This is a great time to think about adding rough-ins for a basement bathroom or making other plumbing improvements. Once the floor is sealed back up with concrete, making changes later can be much more complicated and costly.

The Happy Valley, OR homeowners’ guide to septic system installations and replacements
From average costs to expert advice, get all the answers you need to get your job done.
outdoor water lines with backflow preventer
Jun 12, 2025
Jun 12, 2025
Backflow preventer costs depend on type, size, location, and labor costs. This guide breaks down the cost factors to help you budget.
Man inspecting well
Apr 21, 2025
Apr 21, 2025
Discover how factors such as your location, service requirements, labor rates, and add-ons affect well inspection costs.
A septic system on the backyard
Apr 16, 2025
Apr 16, 2025
If you need to install a new septic system, use our cost guide to budget for this extensive project.
well pump in borehole water supply system
Apr 16, 2025
Apr 16, 2025
Budget for well pump repair costs based on factors such as parts and components, location, pump type, labor, inspections, and more.
septic tank in yard under repair
Mar 23, 2025
Mar 23, 2025
Budget for septic tank repair costs based on factors including parts, materials, labor, ongoing maintenance costs, and more.
Girl washing her hands in the kitchen
Mar 20, 2025
Mar 20, 2025
Use this guide to budget for a septic system inspection based on cost factors such as inspection type, accessibility, and additional septic services.
Share project details to get started.