Also consider that productivity often increases with water-based material. So, environmental compliance can save you money and give your customers a better paint job as well. This gives them two good reasons to hire you, and not your competitors. Over-ordering paint to ensure there was enough to finish the job used to be a common practice. This reduces accumulation of hazardous waste.
Several companies make solvent recovery equipment, or solvent stills.
A still is a machine that takes dirty solvents and makes them clean and reusable. Although the initial investment is high, the machine minimizes both solvent purchases and hazardous waste disposal costs. That is, every gallon of solvent recovered saves you about seven to nine dollars per gallon. If you recover just four gallons of solvent per week, you'll pay for the machine in several years. Control of hazardous material.