What is a septic tank and is one worth installing?

A black plastic septic tank partially concealed with soil
How often your septic tank needs emptying depends on the household and tank size (Image credit: Getty)

'What is a septic tank?' is a question self builders and renovators might be asking if their new house isn't linked to the sewage network. 

A second question might be whether a septic tank is worth installing rather than opting for alternative off-mains drainage options. Ultimately this choice w come down to the location of your house, the soil quality of the land around it as well as what your budget is in both the short and longer term. 

Sam Webb

Sam is based in Coventry and has been a news reporter for nearly 20 years. His work has featured in the Mirror, The Sun, MailOnline, the Independent, and news outlets throughout the world.  As a copywriter, he has written for clients as diverse as Saint-Gobain, Michelin, Halfords Autocentre, Great British Heating, and Irwin Industrial Tools. During the pandemic, he converted a van into a mini-camper and is currently planning to convert his shed into an office and Star Wars shrine.