Water used for washing, especially in industrial processes.
2000, Jeffrey M. Farber, ‎Ewen C. Todd, Safe Handling of Foods (page 62)Washwater should be of the appropriate temperature. pH, and chlorine levels at all times and should be changed every 2-4 hours.
2012, John C. Crittenden, ‎R. Rhodes Trussell, ‎David W. Hand, MWH's Water Treatment: Principles and Design (page 1651)The volume of waste washwater will vary from 2 to 5 percent of the plant flow. The corresponding solids concentration will typically vary from 6000 to 8000 mg/L, comprised primarily of DE.
