–Urban or domestic wastewater: it results from the use of water in homes and urban centers, where many businesses and workplaces are also concentrated. This type of wastewater is especially high in organic pollutants and sedimentable solids, as well as bacteria.
–Industrial wastewater: this results from the processes of the economy’s secondary sector – that is, industrial activities. This includes the water discarded by factories, energy production plants, or any other activity destined to manufacturing consumer products or manufactured products.
-Wastewater from agriculture and livestock: these come from the primary sector of the economy. For the most part, they are produced by livestock, especially intensive livestock farming.
–Wastewater from rain: this type of wastewater is produced when rain carries pollutants present in the atmosphere, especially urban centers, to the ground, polluting it. Most of this water ends up in the public sewer, where it flows into domestic or urban wastewater.