Water in your Oil Tank – Fast Resolutions

Installed Oil Tank

Water in your oil tank may cause boiler issues and blockages in your pipes, especially during freezing winter temperatures.  If water finds its way into your oil tank, it is important to deal with it quickly.  The good news is – there are easy ways to resolve and prevent these problems.

Detecting Water in your Oil Tank

Water-detecting paste is the easiest way to find out if water has entered your oil tank.

Apply this sticky paste to a rod or stick and insert this into your tank until it touches the bottom.  Remove the rod and check the colour of the paste.  If there is water in your oil tank, the paste will change colour.

Removing Water from your Oil Tank

Water must be removed as quickly as possible to avoid problems with your fuel supply.

If you have an older metal oil tank, it may have a ‘sludge removal valve’ which you can use to drain water from the bottom of your tank.

2 alternatives are:

  1. Oil Tank Water Removal Sponge

A water absorbent tank sponge offers an easy and effective method to remove water and ensure the cleanliness and effectiveness of your system is maintained.  The weighted super absorbent tank sponge will lay flat on the bottom of your tank, soaking up any water, but remaining impervious to fuel.  When full, it is easy to remove and replace to give you peace of mind that your fuel is working to maximum efficiency.

  1. Heating Oil Water Trap

A heating oil water trap is a newer method to keep your fuel water-free.  This works by separating water from your oil when the oil is en route to your heating system.  It allows you to drain off water before it enters and damages your boiler.

Safe Disposal of Contaminated Water

Water removed from your oil tank must not be poured down the drain.  Ask your local waste disposal tip if they have an oil disposal area to ensure you can safely dispose of any contaminated water.


Look out for our new Tank Extraction Kit coming soon!