There is currently no standard testing for septic system compatibility. There are too many variables that can influence the environment of the septic tank, including water usage. While we believe our household products (with the exception of our wipes, as those should not be flushed), as well as our personal care product lines under normal use should be okay to use with a septic system, we leave it up to the users best judgement about what is right for them.
The products are considered grey water safe. For more information on this, please watch this video: https://www.youtube.com/watch?v=x16uhZUTF1o