If you're purchasing vacant land you should perform a feasibility study and determine what type of septic system can be installed.  This way you'll know the approximate cost to install a septic system.

Here are a few septic design companies we have worked with in the past.

1. B-Line

Address: 2971 Phillips Lake Loop Road Shelton, WA 98584

Phone: 360-426-4221

 

2. Arrow Septic Design

Address: 171 E Vuecrest Dr, Union, WA 98592

Phone: (360) 898-2255

 

3. Peninsula Excavating Inc  

Excavating contractor in Mason County, Washington

Address: 2380 W Highland Rd, Shelton, WA 98584

Phone: (360) 426-4364