The most important element in any irrigation system is a dependable water supply. Traditionally, most of the world's major irrigation systems receive water from rivers that have their tributaries in snow-clad or rain-swept mountains. For the Fertigation (drip irrigation)/Hydroponic irrigation method, it is very crucial that the water supply fulfill both quality and quantity requirements. Water supplies can be obtained by numerous types 
of water resources projects, such as wells, dams, or reservoirs. The water supply must be from clean, unpolluted resources, odorless and clear with the right value in terms of pH, electron conductivity (E.C) and TDS. Example is tab water, water from lake, streams and wells. The beginning of a dripping system is the water source. This is usually a tap into an existing (city) water line or a pump that pulls water out of a well or a pond. It travels through pipes from the water source through the valves to the tubings and then the driper. It is also advised to install a 
special filter to filter any sediments, impurities and also chlorine (because plants don't need chlorine). The pipes from the water source is then collected in a nutrient tank whereby nutrient is added and measured according to the plant's requirements. A pump is installed to pump out the water with nutrient up to the irrigation valves that are called 'mainlines', and the lines from the valves to the driper are called 'lateral lines'. Most piping used in Fertigation systems are HDPE and MDPE or PVC or PEX plastic pressure pipes or hoses due to their ease of installation, resistance to corrosion and will not effect the nutrient characteristics. Sub-irrigation in Fertigation (drip irrigation) system requires fairly sophisticated, expensive equipment and management if you really want to do it commercially . Advantages are water and nutrient conservation, and labor-saving through lowered system maintenance and automation.
of water resources projects, such as wells, dams, or reservoirs. The water supply must be from clean, unpolluted resources, odorless and clear with the right value in terms of pH, electron conductivity (E.C) and TDS. Example is tab water, water from lake, streams and wells. The beginning of a dripping system is the water source. This is usually a tap into an existing (city) water line or a pump that pulls water out of a well or a pond. It travels through pipes from the water source through the valves to the tubings and then the driper. It is also advised to install a special filter to filter any sediments, impurities and also chlorine (because plants don't need chlorine). The pipes from the water source is then collected in a nutrient tank whereby nutrient is added and measured according to the plant's requirements. A pump is installed to pump out the water with nutrient up to the irrigation valves that are called 'mainlines', and the lines from the valves to the driper are called 'lateral lines'. Most piping used in Fertigation systems are HDPE and MDPE or PVC or PEX plastic pressure pipes or hoses due to their ease of installation, resistance to corrosion and will not effect the nutrient characteristics. Sub-irrigation in Fertigation (drip irrigation) system requires fairly sophisticated, expensive equipment and management if you really want to do it commercially . Advantages are water and nutrient conservation, and labor-saving through lowered system maintenance and automation. 
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