Waste water is something that everyone has to deal with and actually produces at some level. It is the liquid that is the result of certain purposes or tasks, like toilets discharge or bath water. Water that is used for food preparation also falls into this category. Basically, all the water that goes through the drainage system in your home which is then carried to the outdoor drains is waste water. What happens to it from this point on depends on where you live: for those in city areas the water is carried through sewer pipes to treatment facilities; while for rural areas where public services are not available waste water goes into septic tanks where companies are then hired to come in and empty them.
Waste water contains faeces, urine, wash water, and the water leftover from foods and its preparation. Waste water is also storm water that collects from run offs. Keep in mind that it isn’t just households that create this type of substance, as many industries and businesses do as well. The contaminants found in the water from these entities can vary. For example, hospital waste water will differ from waste water that is created by manufacturing entities.
In recent years, there has been a lot more education put forth about water contamination where people have been strongly encouraged not to toss chemicals and medications down through their drain. This was something that was not given much attention to prior to the Eighties and early Nineties.
The treatment and disposal of waste water done in a safe, efficient manner is critically important to the health of the public and the environment at large. Rural areas and small communities have to be extra vigilant about this because they may not have the resources readily available to them like metropolitan areas do.