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Top-Rated Septic tank pros in Unalaska - Updated Nov 2026

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J&B Construction
4.5(
2
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Unalaska, AK and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Kent has done everything he has said he would do along with give us some improvement suggestions that would either make the project better or save us some money."
Engineered footing system
1000 gal. ploy tank being installed
excavation completed and starting footer system.
Back filling the fox block footing system after insulation placed at lower footer.
DBL Clean out at tank. Preferred install method

+14

Recommended by100%of homeowners
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Arctic Excavators, LLC
New to Angi
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Unalaska, AK and surrounding areas

In business since 1970

Arctic Excavators LLC is an Alaskan and Service Disabled Veteran Owned civil site work and excavating contractor. This family founded company has worked throughout the state of Alaska on both residential and commercial civil construction and excavation projects since 1970. Give us a call today for help with your next project!

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Septic Tanks FAQs, answered by experts

To keep roots from growing into a septic tank. However, there are other steps you can take if existing tree roots are getting close to your septic tank. For one, you can install root barriers, which physically block roots from reaching your septic tank. You can also use chemical solutions in your yard or plumbing system to deter root growth.

Leach lines are commonly made of PVC pipe, and they’re placed into trenches filled with gravel and sand, which help treat the wastewater. The PVC pipes are perforated, or drilled with small holes, so the wastewater can drain out of the pipes and into the surrounding material, which eventually leads to the aquifer.

A septic tank with a 1,500-gallon capacity is good for larger homes with up to 6 or 7 bedrooms. The average home can go with a smaller tank, about 1,000 gallons, which supports a home size of up to 2,500 square feet, or a home with about three bedrooms.

You may want to increase the size of your leach field, for instance, if you add on to your home or install more bathrooms in your house. You can make your leach field larger by installing more pipes or expanding the area of the field itself. Improving the soil quality in the drain field can also make it more effective without increasing the area.

Modern septic tanks have two lids: one that covers the inlet where wastewater flows into the tank and one that covers the outlet where the treated water flows out to the drain field. However, older septic tanks installed before 1975 may have only one lid. Because septic tanks last 20 to 40 years, if yours only has one lid, it may be time for a replacement.

The Unalaska, AK homeowners’ guide to septic tank services

From average costs to expert advice, get all the answers you need to get your job done.

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