Recycled water and plant growth
Radish plants will grow more quickly when watered with recycled water.
Recycled water is basically sewage water that has been treated to remove some of the impurities and solids. Examples are water that is washed down the kitchen sink, flushed down the toilet and water that is used for laundry. Usually, recycled water is used only for irrigation or fire fighting as it is unsuitable for human consumption without being further treated/processed.
The cost of recycled water is normally higher as compared to the cost of acquiring fresh water, in countries where fresh water resources are readily available. However, recycled water is normally sold at a cheaper price to encourage usage, in order to help conserve fresh water resources. Recycled water is also rich in nutrients like nitrogen and phosphorus making it very suitable for use in agriculture and horticulture.
There are some concerns regarding the safety of recycled water and public health. The presence of some pathogens that cannot be destroyed by chlorine, and the possibilities of infecting people as this water is sprayed across lawns or farmland through sprinklers, is cause for concern. Another cause for concern is the seepage of impurities from the recycled water into ground water resources.
Basic safety requirements