**4.1.3.2 Filter**

Depending on the source of water used in sprinkler irrigation system, irrigation water contains substances that can clog heads such as silt and organic matter. The filtration is performed to prevent clogging problems in short-and long-term in the system. Depending on the nature of water resources, it can be used to avoid clogging the heads of sand separator, hydro cyclone and disc filter. Due to mostly use of drinking water for landscape irrigation, filtering process is carried out with the disc or mesh filters. In sprinkler and drip irrigation systems, 80-120 mesh filters are usually preferred.
