A recycled-water irrigation system consists of many of the same components as a potable-water irrigation system. The primary difference is that components of a recycled-water system must be colored purple and labeled or tagged, so that they're easily distinguishable as components that convey recycled water.
The recycled-water system must have no cross connections with any potable-water system.
All piping, valves, controllers, sprinkler heads, pumps, storage tanks, and other parts must be approved for use in a pressurized recycled-water system. They must also conform to certain guidelines. For example, if the storage tank receives both recycled and potable water, the potable supply must be properly air-gapped to avoid cross contamination.
Other special considerations with a recycled-water system include the following:
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