Are your products safe for grey water systems? Sydney January 11, 2019 17:25 Updated Follow Yes, our products are safe for grey water systems. Happy Washing! Related articles Are your products safe for septic tanks? I have hard water. Can I use Dropps? Are your products vegan? Are any Dropps products approved by the EPA's Safer Choice program? What should I look for in a baby laundry detergent? Comments 0 comments Article is closed for comments.