The drainage system in any building is an essential part of the infrastructure. It helps to remove rain water, sewage and other liquids from the ground and send them away into a sewer or river. A blocked drain can cause flooding, damage property and inconvenience residents. If you're experiencing problems with your drains in Wotton-Under-Edge, then it's important to get professional help as soon as possible. There are many different types of drainage systems used in buildings today: open channel (such as rivers), closed circuit television (CCTV) sewers, storm drains and sanitary sewers. Each has its own advantages and disadvantages depending on the location and type of building involved. Open channel systems are usually best for large areas such as industrial estates or farmland because they allow free flow of water across wide expanses without causing erosion or sedimentation Problems can occur when rainfall accumulates against a dammed up stream; this results in flash flooding which can quickly overwhelm downstream properties Closed circuit television (CCTV) sewers use cameras to monitor traffic patterns underground so that blockages within pipes can be detected early on; if necessary repairscan be carried out before too much damage occurs Storm drains collect precipitation runoff from roofs, guttering etc.; these may also carry surface waters like streams Sanitary sewer networks take care of human waste products by transporting them through trenches beneath streets where they eventually reach wastewater treatment plants