How Much Does it Cost to Clean and Maintain a Septic Tank?

Summary of Septic Tank Cleaning and Maintenance Costs
Price Range = £80 to £800
Average Cost = £270
Cheapest Price = £80

Related Guides: Plumbing Cost Guide

Septic Tank EmptyingOnce you have a septic tank fully installed and up-and-running, you might think all the hard work is over and done with. In fact, keeping your unit clean and pristine is important in helping the system run as smoothly and efficiently as possible. If you left it untended for a long period of time dirt, grime and scum would gradually build-up in your tank to form a blockage, which would eventually cause a complete failure of the system. So, getting things sorted as soon as you notice a problem really will save a lot of time, money and extra effort in the long run!


Cost to Clean Septic Tank

Of course, it is important to get a rough idea of septic tank maintenance costs and septic tank cleaning prices before hiring just anybody to come and clean the tank for you. The final septic tank cleaning cost will ultimately depend on a number of different factors, including the size of the tank that needs servicing and the damage and/or volume of waste disposal that needs to be dealt with. However, to help give you a rough idea for budgetary purposes the following websites and cleaning companies have provided the following quotes for the average cost to clean a septic tank:

  • put the average cost of cleaning a septic tank at between £80 and £120
  • say that it costs, on average, £150 to clean a septic tank
  • quote the average cost of cleaning a septic tank as between £200 and £800

Why Hire a Professional to Clean your Septic Tank?

These figures might look a little daunting at first, but unless you are experienced and confident in this sort of DIY job it is highly recommended that you always opt for a professional septic tank clean. Not only will a fully qualified contractor or plumber get the job done in half the time, but they will also be able to provide specialised, high-tech equipment (such as tractor tankers, industrial vacuums, drum waste vehicles and high-pressure water jets) that would otherwise cost you just as much to hire as the professional cost of cleaning septic tank. Plus they will carry out a full survey and risk assessment before getting started, and comply with all the health and safety regulations that come with the territory.

Maintaining your Septic Tank

If you want to reduce how often you will need to fork out for a septic tank service cost, you could always look into having a bacterial booster installed as part of your clean or repair job. These boosters help to breakdown chemical cleaner and rinse any harmful, accumulative substances hanging around in the tank – thus reducing the need for frequent cleans or maintenance work.

If your contractor is unable to provide a bacterial booster, they can usually be purchased from most DIY wholesalers or manufacturers for as little as £40 – and they only need replacing once every six months. Of course, any septic tank repair cost proves to be worth it in the end – it gives you and your family peace of mind and allows you to get on with other day-to-day activities without having to worry about running water in your home.

Sources:,, Prices are accurate as of December 2012.

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