Septic Tank Installation and Replacement Services in Spokane and Spokane Valley

If you are looking for a hassle-free septic tank installation or replacement experience, Mainstream is the best choice. We’ve been doing this since 2000 and have all the expertise and equipment to finish most jobs on the spot. Whether you book us for the future or need same-day service, we’re glad to help.

We Make Choosing a New Septic Tank Easy

Septic tanks can be made from plastic, fiberglass, concrete, or stainless steel. With four different materials to choose from, it can be difficult to know which is best for your home.

Our technicians are experts at creating a personalized septic tank proposal, including the material, system, and size, based on your home’s needs.

Here are the different types of septic tank systems we offer:

Aerobic

Anaerobic

Sand filter

Mound

Pressure distribution

We pride ourselves on our excellent communication, which is why we tell you your options first before we start any work. You can trust that you’ll receive the best advice and high-quality work when you schedule an appointment with Mainstream.

Check out why your neighbors trust us to get the job done right

Amazed

Our home is 66 years young and it was time to replace the original water lines and sewer lines. I was amazed that they were able to streamline, fix old plumbing mistakes and make our entire water system user friendly. Thank you Cody, Donovan and the third guy that I can't remember his name. They were all professional, polite and knowledgeable.
Leland H.

Great Service

We had some plumbing work done by Mainstream. The plumber (Sam) they sent out was GREAT. He listened to what we wanted done; gave us advice about things that could become issues and was very conscientious. We took his advice about our 15+ year old water heater and replaced it. My husband raves about how great it is to have really hot water. We plan to have Mainstream do work for us in the future.
Theresa J.

Excellent Work

Sam Smiley was our plumbing tech and he was amazing! Very professional and courteous. Did excellent work and had a great attitude. Thanks so much for your help today!
Beth V.

No Upsells

He was very nice, friendly, and professional, fixed my bathroom sink which I had not used for several months. He did ask about several other plumbing related issues, but never pressured or upsold me, was very happy with the experience
Benjamin C.
Read all our reviews

Proudly Serving the Spokane area since 2000.

We are proud to have serviced Spokane and Northern Idaho for 20+ years and can’t wait to hear from you! Even if you are in the surrounding area, feel free to give us a call. We’ll be ready to set up an appointment to visit you.

To schedule a consultation, call (866) 411-9277 or fill out our contact form.

Special Offers in Spokane, Washington

FREE Kitchen Faucet
Free

If you have our team replace your water heater, you're eligible for a new, FREE kitchen faucet. Contact us today for more details!

Schedule Now
07/31/2022
Disclosure
Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers
$79 Off Any Repair
Free

Schedule Now
07/31/2022
Disclosure
Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers
$79 Drain Clearing
Original Price: $ 149
Savings:$ 70
Sale Price:$79

Schedule Now
07/31/2022
Disclosure
Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

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