Calcium buildup in the water pipes can cause a lot of inconvenience and trouble. Calcium deposits inside the pipes result in slow drains and lead to a lot of inconvenience during the winter months, especially because these buildups cause the hot water within the pipes to run cold. Apart from that, other plumbing problems, like clogged shower heads and damaged pipes, can result from calcium deposits piling up in the pipes. It is important to keep the water pipes clog-free. Calcium deposits are found where mineral-based water runs through the local water system.