Acetone

Solutions of less than ten percent acetone can be discharged down the sewer in most of the City of Spokane; otherwise they are a hazardous waste. Diluting acetone (or anything else) in order to meet the discharge concentration is strictly illegal. 

To learn the accepted levels for your business's wastewater contact your local sewer authority. Businesses located in the City of Spokane should contact Spokane Wastewater Management at 509-477-3604. Business located in the Spokane Valley and Spokane County should contact Spokane County Industrial Pretreatment Program at 509-477-3604. Never dispose to septic systems or storm drains.