If you are thinking about buying an “off the grid” property that comes with a septic tank, here are some key facts you need to be aware of.

What exactly is a septic tank?

Simply put, a septic tank is an underground container that collects sewage and waste from a property.

How does a septic tank work?

In a septic tank, liquid and solid waste separates out by the effect of gravity. The waste contents separate out into oils and grease which sit at the top, under which is a liquid layer.

At the bottom of the tank solid waste collects and begins to become broken down by anaerobic bacteria. The liquid flows into a soakaway or a drainage field where the waste is broken down naturally using aerobic bacteria.

Who needs a septic tank?

Properties that aren’t connected to the main sewer system need to have their own waste disposal system, such as a septic tank, so these systems can often be found in rural areas.

Who is responsible for maintaining a septic tank?

The operator of the tank is deemed responsible. The operator could be:

  • The owner of the property connected to the system
  • A property owner who shares the system with other properties, with each property owner being an operator and sharing responsibility
  • Where there is a written agreement with the property owner that states you are responsible for the system’s maintenance, for example, if you are a tenant renting the property.

How often does a sewage tank need to be emptied?

Septic tanks need to be emptied regularly to prevent problems from building up in the soakaway or drainage field; typically, this can be once a year, but it will depend on the size of the tank and how many people are using it.

How often should a septic tank be maintained?

As the septic tank is usually sited underground, it can be difficult to spot problems building up without regular checks. If an issue is left unidentified the damage continues to worsen until, not only will you find yourself with a more costly repair bill, but you may also fall foul of the environmental regulations that exist to ensure that septic tanks don’t cause pollution.

While septic tanks are built to last, penetrating tree roots or shifts in the surrounding ground may cause damage, such as broken pipes or a split tank wall. Regular maintenance can be used to prevent these problems from becoming serious – and expensive – issues.

Are septic tanks bad for the environment?

The Government has issued specific guidance and rules on septic tanks to help ensure that operators adhere to rules for good practices. And if installed properly in the first place, and routinely maintained, septic tanks need not be harmful to the environment.

Do you want to find out more about looking after your septic tank?

Drain and Sewer Services offers a range of septic tank services. Take a look at our blog and read our posts on septic tanks to see how we could help you.

If you would like to learn more about our full range of services, which includes installation, emptying and maintenance of septic tanks, then call us on 01252 312738 or email info@drainandsewer.co.uk to book in a visit.