Septic System Homeowner Training

In Whatcom County property owners can complete evaluations of their septic systems if they become trained and certified to do so.

When you take our free training in person or online, you will be certified to evaluate your own system. You can save money and have confidence knowing how your septic system works.

If your system is not eligible for homeowner evaluation or you simply don’t want to do it yourself, this class is still for you. The training covers the way septic systems work and provides tips for proper maintenance. You will leave feeling good about understanding how this expensive and important piece of your property works.

When you complete the training in person, you also qualify to apply for rebates on repairs or maintenance costs for your septic system.

Homeowners who took this class said:

"This was enormously helpful. I know 100% more about my system than I did when I arrived."

"Really good class, pictures were great, speaker was knowledgeable."

"Very informative"


Some septic system types require professional inspection and can't be self-evaluated.

Click here to find out if your system is eligible.

There are two ways to become certified to evaluate your own septic system: in-person or online.
  1. In-person Workshop
  2. Online Training

There are some cases when a homeowner cannot complete their own septic system evaluation.

Homeowners cannot complete their own evaluations if any of the following apply:

  • The septic system is connected to a community drainfield.
  • The system serves a restaurant or other food service establishment.
  • The system is being evaluated for a sale or property transfer.
  • The septic system uses a proprietary technology (some examples are Glendon Biofilter, OSCAR, and ATU).
  • The system was considered “non-conforming” when it was replaced

In these cases, a licensed Operation and Maintenance Specialist must be hired to perform the evaluation.

To determine your system type, refer to your septic system permit (OSS permit) if you have a copy. The system type is usually noted on the front page.