The answer to 'what causes drain' is that there are several common causes of drain issues in homes. The most frequent causes are hair, soap scum, food particles, and other debris building up over time and clogging the drain. This can happen in sinks, showers, bathtubs, and floor drains. Other potential causes include tree roots growing into underground pipes, mineral buildup from hard water, and improper installation or damage to the pipes.
Drain issues can range from slow draining water to a complete blockage that prevents any water from going down the drain. If left unchecked, a clogged drain can lead to foul odors, water backups, and even water damage to the surrounding areas. Addressing drain problems quickly is important to prevent more serious plumbing problems from developing.