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Find Septic system installers and replacers in Portland

Avatar for A AFFORDABLE SEPTIC SERVICE LLC
A AFFORDABLE SEPTIC SERVICE LLC
4.9(
94
)

Serving Portland, OR and surrounding areas

Angi 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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4 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for GradeX Construction
GradeX Construction
4.8(
12
)

Serving Portland, OR and surrounding areas

Angi Approved

In business since 2023

Free estimates

Emergency services offered

"I?m incredibly disappointed with the work that was done at my property. Mine was a clear case of underbidding and miscommunications. The good: nice people and they did do a lot of work. Just not everything they bid on. Bad: the front yard of my house looks worse. We knew we were being fit in but they seemed to be in a hurry. They focused on one aspect. Overcharged a known addition to compensate for under bidding and still didn?t do the clear away that they were supposed to do. If his tractor couldn?t do the work he just didn?t do it. They were supposed to clear back an entire field and he stopped half way and said he was done and then he left the downed brush despite an email I had stating they would remove or burn the brush as their costs. When we pointed out the miscommunication it ?was what it was?. We spoke many times about what we wanted done - it shouldn?t have been a suprise. Again they did a lot of work but I?m upset they didn?t fulfill the terms. Would not recommend. "
Response time3 days
19 neighbors recently requested a quote
Recommended by91%of homeowners
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Quality Septic and Excavation, LLC
5.0(
6
)

Serving Portland, OR and surrounding areas

Angi Approved

In business since 2022

Free estimates

Credit card accepted

"Cory at Quality Septic and Excavation, LLC responded right away and was able to provide an on-site quote the same day. The project was in an area covered in snow without drivable access. Cory provided excellent customer service and communication, and got the job done quickly and thoroughly. I highly recommend Quality Septic and Excavation, LLC for your septic needs."
Response time6 hrs
14 neighbors recently requested a quote
Recommended by83%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.

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