Water Tank Cleaning
Water Tank Chlorination

Nationwide Water Tank Cleaning & Chlorination Service

Water Tank Cleaning - Water Tank Chlorination

A water tank can be a perfect breeding ground for microbes. E-coli, legionella and a host of other germs can thrive on small mineral traces or even particles of rust. That's why it's essential to carry out water tank cleaning and chlorination on a regular basis.

Water Tank Cleaning Procedure

Before starting the cleaning, it's a good idea to take a look and discover any problems. We use a robotic underwater camera to examine the inside of large tanks without shutting down the water supply. We often discover deposits of sludge and sediment, biofilms and even decomposing animals corpses!

We use industrial water vacuums to suck up the debris and contaminants. Sometimes we perform small repairs if necessary. The lining of some tanks can decompose over time, creating debris and also causing leaks and allowing contaminants to seep into the tank.

The walls of the tank must be washed to release any particles, scale or grime that has built up. It's especially important to break down any biofilms that may be forming on the sides of the tank. These films often form around limescale, which provides a food source and a surface for them to bind to.

Water Tank Chlorination Methods

Water tank chlorination is an effective way to kill germs and prevent them from gaining a foothold in your tank. It's also effective for preventing the formation of biofilms, including legionella. Safety regulations call for chlorination following any extensive work or new installation. 

There are different methods of chlorination which are appropriate for different water systems. Our experts are trained in all the different methods and know when to use one approach over another. Each different procedure has its own pros and cons, so they must weigh up a number of factors to make the right choice.

The standard method is to use sodium hypochlorite to dose the header tank. We raise the chlorine level to 50ppm, and then feed the water through the system and into the other tanks by opening and closing valves.

We then leave the chlorine to soak for 1 hour before testing the chlorine levels again. If the chlorine has dropped by a large amount, we repeat the process again.

Finally, the water system is drained and flushed with fresh water, to remove the chlorine.

We usually use a gravity feed to dose the water system. But for closed water systems, a different approach is necessary. In these cases, we use a pump powered injection system with a drum to dose the system.

Once we have completed the job, we provide you with the required chlorination certificate and take water samples. We run these water samples through an exhaustive battery of water-quality tests, and send you the results complete with all documentation.

We have worked with water companies, councils, the NHS, large property management firms and factories. Our work is always of the highest standard, 

When we visit your premises, we will be able to examine your system in detail and determine which cleaning and chlorination methods are needed. We'll provide a free assessment and a competitive quote for the complete job.