Micro Drainage Software Support Keep pace with the industry standard Your investment in Micro Drainage software will produce returns for as long as you choose to use it. However, to gain the full benefit and maximum return on investment from your software, you will need to register for annual maintenance and software support. Micro Drainage is the only drainage engineering software developer certified to EN BS ISO 9001 and TickIt standards. As part of this commitment to quality, we have to meet rigorous improvement targets: