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Find Septic system installers and replacers in Portland

Avatar for A AFFORDABLE SEPTIC SERVICE LLC
A AFFORDABLE SEPTIC SERVICE LLC
4.6(
108
)

Serving Portland, OR and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"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"
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2 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for SPEEDY SEPTIC
SPEEDY SEPTIC
4.4(
91
)

Serving Portland, OR and surrounding areas

Approved

In business since 1983

Emergency services offered

Warranties offered

"The job was well executed. Compliments to everyone at Speedy Septic. Hayden Buley was very quick to respond to my request for an estimate. I called several other septic system installers on listed on Angie's list who were either booked far into the future, or who did not respond to messages. Hayden made an appointment and came out to inspect the site as agreed and on time. He was very personable and professional. He set up a second meeting involving Mr. Rooter. He then provided an emailed cost estimate. One uncertainty in cost was whether the drain field needed to be replaced. This could not be determined until it was unearthed and inspected. Fortunately the drain field was still functioning well. A new distribution box was needed, and the drain field pipes were cleaned with the "Jetter" and all was well. The job took a little longer than planned due to bad weather. Our only winter snow and ice storms happened while the job was underway. We live on a fairly high hill and the snow and ice conditions were fairly bad, so I can't fault Speedy Septic for having the job take a little bit longer than planned. Then made sure that we had functioning toilets throughout most of the job, always when their work day was done. I'm happy to report that original cost estimate was very accurate. Compliments to all of the Speedy Septic and Mr. Rooter crew. They worked hard in some very cold and nasty weather to get the job done."
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3 neighbors recently requested a quote
Recommended by88%of homeowners
Quality Septic and Excavation, LLC
5.0(
6
)

Serving Portland, OR and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Our existing septic tank was only a few years old, but the associated drainfield was failing and required replacement. Due to a small lot, our options were limited; but rather than a huge and unsightly bottomless sand filter, we opted for a less obtrusive (but expensive) treatment unit and pumps along with the needed replaced drainfield. Cory was very helpful in explaining complex options and costs."
Response time6 hrs
13 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for GradeX Construction
GradeX Construction
4.8(
12
)

Serving Portland, OR and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Aaron has to be one of the most straightforward and honest contractors I have ever worked with who does incredible work. He and his crew move fast to get the job done and will even go above and beyond what is expected. I would recommend Aaron and his crew to anyone because of how good of an experience I had with them."
Response time3 days
9 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Grumpy's Drains
Grumpy's Drains
4.8(
582
)

Serving Portland, OR and surrounding areas

Free estimates

Credit card accepted

"I had a clogged drain line near the street that a rooter guy couldn't break through. I thought I was looking at having to replace the entire line. At the risk of throwing good money after bad, I called Grumpy's. I got great advice over the phone including a number to call if I decided to have the line dug up. The rate I was quoted was reasonable. Grumpy came out and cleared the line in less than half an hour. In addition, he put a scope down the line, found the exact location where roots were getting through, and marked the spot with paint at no extra charge. He wrote down the coupling and pipe I would need to make the repair. When I dug, the break was right where he indicated. Grumpy was a real pro. He saved me a bunch of time and money."
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Recommended by94%of homeowners
Avatar for M P Plumbing Co
M P Plumbing Co
4.5(
263
)

Serving Portland, OR and surrounding areas

In business since 1942

Emergency services offered

Credit card accepted

"Great. He found the metal blocking the disposal and saved me having to install new one. Tightened my faucet in about half a minute. Replaced line and shut off valve to my dishwasher, increasing my water pressure. Showed me how to take toilet fill valve apart to clean out rust so I did not have to call them again."
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+31

Recommended by93%of homeowners
Avatar for Scout Septic
Scout Septic
5.0(
6
)

Serving Portland, OR and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"Matthew and his crew were very knowledgeable and professional. They were very thorough in their inspection of my pressurized distribution septic system and prompt in their submission of the county-required report. A few weeks after the inspection, a power outage caused my system to quit working. Matthew came right out and had it working in a few minutes. I will definitely be using Scout Septic in the future for my annual inspection and any problems that might occur."
Connecting the distribution box
Septic Tank Project
Septic Tank Project
Traffic rated tank with lid to grade and the driveway looking better than when we started.
Septic Tank Project

+20

Recommended by100%of homeowners
Avatar for Hunter Rock, LLC
Hunter Rock, LLC
4.9(
18
)

Serving Portland, OR and surrounding areas

In business since 2015

Free estimates

Offers commercial services

Hunter Rock, LLC, is dedicated to providing our customers with the best quality and craftsmanship. Our pledge is to create successful relationships with our customers, employees, and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

Build pads
Fire road
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+30

Response time2 days
Recommended by100%of homeowners
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FAQs for septic system installation and replacement projects in Portland, OR

The smallest standard septic system uses a 500-gallon tank, which costs between $875 and $1,150 installed. This size works well for single-occupant dwellings with minimal wastewater production. However, many local regulations specify minimum tank sizes, so check with your building department before committing to this compact option. Some jurisdictions require at least 750 gallons regardless of home size to ensure adequate waste processing capacity.

The installation timeline varies based on site conditions, permit processing, and contractor schedules. The process includes obtaining permits, conducting soil tests, excavation, tank placement, leach field construction, and final connections. Weather conditions, soil challenges, and inspection scheduling can all affect the overall timeline. It's wise to begin planning well in advance of when you need the system operational.

The most economical approach is to install a conventional anaerobic system with a plastic tank. To minimize costs while maintaining legality, obtain multiple quotes from licensed installers, consider scheduling during their slower seasons, and handle basic site preparation yourself. Never skip permits or required testing to save money—illegal installations can result in significant fines and mandatory removal, ultimately costing far more than doing it right initially.

Regular pumping helps prevent system failures and extends operational life. Most small systems require pumping every three to five years, though frequency depends on household size and usage patterns. Pumping services cost between $290 and $530, making this maintenance expense relatively minor compared to potential repair costs ranging from $500 to $2,600 for neglected systems. Establishing a regular maintenance schedule based on your installer's recommendations helps avoid costly emergency services.

The Portland, 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.