Water used and discharged from homes, commercial establishments, industries, pollution control devices, and farms. The term wastewater is now more commonly used than sewage, although for the most part, the terms are synonymous. Domestic or sanitary wastewater refers to waters used during the course of residential life or those discharged from restrooms. Industrial wastewaters refer to those generated by an industry. Municipal wastewaters are waters used by a municipality, so they would likely include both sanitary and industrial wastewaters. Combined wastewater refers to a mixture of sanitary or municipal wastewaters and stormwaters created by rainfall.