The water filter is an important component is a drip irrigation system. If the filter clogs the water flow and pressure is reduced. As clogging occurs, the flow and pressure is reduced. The system dynamics change, as well as the performance of the system. Use the correct filter for the water quality.
Dirty water requires a media (sand) filter or disk filter to capture the debris, dirt and organic matter from surface waters. Screen filters clog too quickly. Inspect the filter frequently to ensure it is working properly.
Filters are an insurance against damage to emitters. All systems should be protected by the size filter recommended by the emitter manufacturer. Using a smaller mesh filter will give more protection but the filter will require more frequent cleaning. Automatic backflushing is recommended for all dirty water situations.