Washington Septic just installed a new gravity system for me (November 2025). Right from the beginning when I needed perk holes dug, soil evaluation done, site plan drawn up, and permits obtained, I was slightly overwhelmed but Andrew calmly and expertly guided me through the maze.
When it came time to do the installation a few weeks later, there were men on site before the sun even rose. Before I knew what had happened the system was installed, inspected, backfilled, and neatly graded. The price includes a free inspeciton 1 year down the road. Estimate and Invoice were emailed/texted and easy to understand. Overall just a painless experience and would 10/10 recommend them.