Here in the Northwest, having good and reliable underground utilities is critical. Seppanen Construction will look to accomplish that for you, whether it be through gas trenching, installing a water line, or any of our many underground services.

There are several underground utilities we are qualified for and ready to do:

    • New construction or remodel sewer connections
    • Water lines
    • Power
    • Phone
    • Gas trenching
    • Drainage piping
    • Infiltration trenches (required for storm water disposal dig and backfill)

Septic Systems
Septic to Sewer Conversion

    • French Drains

Contact us to find out more information, or give us a call at (360) 263-7950!