Most of us take our drainage for granted; often we assume any issue that arises is definitely the responsibility of the water supplier. However though, generally speaking, you're usually in charge of drains inside the boundaries of your property, while the sewerage company is in charge of lateral drains, which are beyond property boundaries, and sewers. Although most sewers are actually publicly owned, you may still find some private or unadopted sewers. If your property is served by one of these brilliant, you may be responsible for maintaining it.
So if there is a concern with the drain inside your property boundaries then it really is your responsibility, plus they, unfortunately, do block up for a variety of reasons.
Some signs that will assist identify a draining issue include:
1. If your toilet, shower, bath or sinks are all draining slowly that is likely an issue with the drain itself. Independent drainage issues will be a concern with the fixture itself. The toilet is often the primary driver for a blockage - if flushing the bathroom . causes water to rise in the shower, or running taps causes the water in the toilet to rise, then there is a blocked drain on your hands.
2. Find more information smells certainly are a dead giveaway for a blockage, if something has blocked the drain and begun to rot, you will certainly find out about it.
3. Finally gurgling noises from pipes, drains and plug holes are all indicators of a potential blockage. That is created once the air is trapped in the pipes and then waste water displacing it.

Typically the 2 biggest factors behind drain issues will undoubtedly be grease/fat build-up and tree root ingress. Fat build-up is really a large cause for blockage in the national sewer system and it'll affect homes too. Once you wash your plates or simply pour fat down the sink, the warm liquidated fat will hit the cold outside water in the drains then solidify, over a period of time this will build up causing a blockage.
Root ingress is harder to avoid, and probably the biggest cause for blockages in homes. Root issues can be hugely serious and a big cause of subsidence related problems. Older clay pipes are particularly prone to root ingress as they are joined with just sand & cement these joints offer little resistance to fine tree roots which once inside become tap roots and root masses which then reduce the internal bore of the pipe.