Septic Installation Flathead Valley

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Certified Septic Installers

Reliable Septic Installation


At Stillwater Excavation, we pride ourselves on being the top-tier experts for all your septic needs. We're dedicated to excellence and passionate about serving the Flathead.

You may be building a new home, expanding an existing property, or replacing an old system. We have the skills and resources to handle any size or type of project. But don't just take our word for it – our satisfied customers speak for themselves about our team's professionalism, expertise, and dedication. You may need a simple septic tank installation.  You can trust us to exceed your expectations. Call us any time. Stillwater Excavation is here to make your septic installation project a success, one satisfied customer at a time.

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Kalispell, Whitefish, Columbia Falls, Bigfork

Septic Installation Flathead Valley


From the first meeting to the final check, our team works closely with you at every step to ensure your vision becomes real. You may be building a new home, expanding an existing property, or replacing an old system. We have the skills and resources to handle any size or type of project.


We know that septic installation can be expensive, that's why we strive to offer clear prices and honest communication. Our goal is to not just meet but beat your expectations. We work hard to limit disruption to the landscape.  Choose Stillwater Excavation. You can feel confident knowing we will handle your septic installation with great care 

Septic Design


We can also take care of the design so there's nothing for you to worry about. Basic subgrade systems, or engineered sand mounds, either one is no problem. We only use the highest quality materials and state-of-the-art equipment to ensure that your septic system is built to last. Our techs follow the best practices and local regulations to get the job done.

Call us Today!

Call us any time to get a free estimate on your septic system installation.

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