Since storm drains are intended to manage only rainwater, nothing else should go down the storm drain.
All detergents are toxic to fish, even biodegradable detergents.
Solutions of detergent and water should be discharged to the sanitary sewer, not storm drains. For more information about the regulations in your jurisdiction, call your local surface water utility or public works department. Contact the following firm to learn about dry wash products. By visiting this and other King County web pages, you expressly agree to be bound by terms and conditions of the site.