Greywater is the domestic wastewater that comes from sources such as washers, bathtubs, bathroom sinks, and even showers. However, don’t confuse greywater with sewage water, which is called blackwater.
The use of greywater, especially with a pH level of around eight, can lead to an increase in soil pH, but at the same time, it can reduce the availability of some micronutrients that are essential for plant growth.
There is no denying that the water contains beneficial bacteria and micronutrients that promote the growth of plants. However, you can’t overlook the fact that greywater also contains other chemicals that might be harmful to the soil and environment.