Domestic wastewater is the liquid component of waste removed from residences, businesses, and institutions. Wastewater from hospitals is considered to be one of the major sources of domestic wastewater. Domestic wastewater generally includes material disposed of through toilets, sinks, tubs and showers, washing machines and the like.
Wastewater generated from hospitals or other health care industries must be treated and disposed of in a manner that minimizes potential harm to public health and detrimental impacts on the environment. When untreated wastewater is discharged to water bodies such as the sea, creeks, rivers and streams, it contaminates water with harmful bacteria and nutrients and also causes foul odors. Therefore wastewater should be treated however design and operation of wastewater treatment systems for hospital is a challenge for wastewater engineers.
Without a treatment plant, the discharged wastewater quality does not meet Philippine effluent standards.