Valenta M.
8/16/2025
Hector did a great job! He was polite and professional. I called Cliff's for a second opinion. A well known Yakima service failed to complete the work and said they were not able to remove tank's...
Cliff's Septic Tank & Sewer
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1536 Sunnyside Mabton Rd
Sunnyside, WA 98944
Cliff's Septic Tank Service, based in Sunnyside, WA, is a family-owned company with over 60 years of experience in providing a comprehensive range of septic system solutions, including tank cleaning, pumping, repair, installation, and video inspection services. They serve residential, commercial, and industrial clients across Yakima, Benton, Walla Walla, Grant, Klickitat, and Franklin counties, ensuring prompt, dependable, and courteous service from their trained professionals.
In addition to septic services, Cliff's offers a full line of portable toilets, including custom restrooms for weddings and special events, along with free advice on high-pressure flushing and repairs for clogged lines and broken pipes. No job is too big or too small for Cliff's, as they prioritize every client's needs and guarantee their services.
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Reviews
3.010 reviewsAmanda W.
11/16/2024
We've been with Cliff's Septic for quite some time now, absolutely love the service, price isn't too bad, and the guy that comes out is always so nice. However, I'm not sure if they have different...
Grecia C.
6/11/2024
Not sure what secretary name is but she gives to much attitude and is a hitch every time. I call it's like she has a problem. if you can't give respect then don't expect it back! She needs to...
Brandy H.
4/28/2023
THANK YOU to the company and to Hector - excellent service. the system is from 1982 and we had no idea where the tank or anything was! He found it and got the job done AND beat the estimated price...
Adela S.
11/14/2019
I am from the Yakima valley and own a house in Sunnyside. I had to have some work done and so my sister called them. Not only did they show up days later then they said they would be there, but it...
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