Established in 1948, and with over 60 years experience, Cliff's Septic Tank & Sewer based in Sunnyside, Washington proudly provides a wide range of residential, commercial and industrial septic system solutions in Yakima, Benton, Walla Walla, Grant, Kickitat and Franklin counties and the surrounding areas.

We are a locally owned and operated company, and are fully licensed, insured and certified to provide you with prompt, professional septic system services.

As a member of the Central Washington Home Builders Association (CWHBA), we're confident that the quality and affordability of our services won't be surpassed by our competitors.

At Cliff's Septic Tank Service, we dedicate ourselves to producing consistent, high-quality work. We're grateful for the loyal customer base we've built over the years and look forward to new growth as the years move forward.