In a few days, drains in the kitchen and elsewhere are reeking with gray drainage visible inside them. The problem is that to melt the coagulated grease, a high temperature is required, and it eventually blocks the pipe. If luck is not on your side, the contents of the pipe that cannot pass down to the septic tank start to freeze. As the drain water solidifies and freezes, it can cause cracks in the line. The cause doesn?t have to be grease. It could be anything flushed down or dumped in the basin or bathroom drain causing the problem, like paper, hair, wrappers, etc. Contact a hydrovac crew at the earliest to find an appropriate solution for the frozen septic pipes.