D&H subsurface drip irrigation systems are designed and engineered for maximum performance. A comprehensive Computer Aided Design (CAD) software is used to design the subsurface drip system which applies small quantities of water to nourish and water the soil precisely and efficiently. Based on the topography of the field, our design indicates exact placement of the filter station, irrigation controllers, radio remote terminal units, solenoid controlled/pressure reducing control valves, butterfly valves, flush out assemblies and air/vacuum relief valves. These systems are controlled electronically so problems can be detected and corrected without a trip to the field. These D&H designed and engineered systems require less maintenance.