This document covers the system's components needed for the use of treated wastewater (TWW) for irrigation. Emphasis is placed on irrigation methods, mainly drip irrigation, as this method represents an efficient method of irrigation and water saving, while reducing the pollution of the crops. Despite the fact that water quality and filtration of treated wastewater (herein TWW) using drip irrigation are critical, open irrigation systems are more popular and are frequently used for irrigation with TWW and therefore are covered in this document.

This document covers issues related to the main components of a TWW irrigation project, including the following:

—    pumping stations;

—    storage reservoirs;

—    treatment facilities (for irrigation purposes);

—    filtration and disinfection;

—    distribution pipeline networks;

—    water application devices: irrigation system components and treatment.

This document is not intended to be used for certification purposes.