Answer: Since the dripper is a precision component, there are certain requirements for the particle size of impurities in the irrigation water. The drip irrigation requires that the particle size is not greater than 120 mesh to ensure that the dripper is not blocked. If the water source filtration measures and equipment meet the requirements, well water, canal water, river water, mountain pond water, etc. can be used for drip irrigation. Therefore, the water source filtration equipment is the core component of the drip irrigation system. Most of the drip irrigation systems fail to work properly because the filtration equipment does not meet the requirements or is neglected to clean the filter.