Septic System Resources
Chapter 246-272A WAC, On-Site Sewage Systems
U.S. Environmental Protection Agency (EPA), Septic Systems
A Homeowner's Guide to Septic Systems (EPA) (pdf)
Washington On-Site Sewage Association
Landscaping Your Septic System (pdf)
Virginia Cooperative Extension, Planting on Your Septic Drain Field
National Environmental Services Center, National Small Flows Clearinghouse
National Small Flows Clearing House, Pipeline Newsletter Archives

