Grey Water
Irrigation systems can be energy efficient and sustainable, simply by using grey water (wash water from showers, sinks and washing machines). Grey water irrigation is a cheap and effective way of watering plants while saving valuable fresh water, which is especially important in arid climate.
Use of grey water demands durable plants that tolerate chemical residues and varying pH levels. In an arid climate, the plants should always be drought tolerant, even if irrigated, for minimal maintenance costs. Since the evaporation is very high, time of irrigation, type of plants and ground covers used are of great importance. The use of irrigation diminishes the length of dormant season and therefore gives a fresher look to the garden for the better part of the year.
