Not all locations have running water available for drip irrigation of food crops and other cash plants.
Here is an awesome DIY idea for an easy to construct yet very effective drip irrigation system.
If you are ever in the vicinity of Fort Myers be sure to stop by and visit ECHO Global Farm for permaculture support systems like this they refer to as 'appropriate technologies'.
With this portable and inexpensive but highly effective drip irrigation system a five gallon bucket is used as a water tower or water storage unit. The five gallon bucket is covered with a filter cloth to keep leaves and debris out of the collected water (rainwater or added water) and hung from a bamboo stand..
Attached to the bottom of the bucket is a drip irrigation hose placed through the bucket wall in a drilled out hole, caulked around the edges.
The irrigation hose is woven through the planted crops needing irrigation, staked into the ground and fitted with drip nozzles.
Water conservation is an important part of sustainable agriculture.
Drip irrigation and water supply systems don't have to be expensive or complicated. With a little creativity one can incorporate simple, appropriate technology growing systems into their permaculture project, green roof or urban farm.