Treating Water Seriously


Water legislation can be a difficult thing to wrap your head around, but don’t worry - Dynamika are here to answer all your questions.

Here are a few of the questions we often get from our clients.

What is Legionella?

Legionella is a type of bacteria which causes Legionnaire’s disease (as well as the less dangerous Pontiac fever) when inhaled through water droplets in the air.

Legionella bacteria can be found naturally in freshwater rivers and ponds, but they exist in such low numbers that they’re generally harmless.

However, they can become a serious danger if they manage to enter man-made water systems. Here, they can not only multiply in large numbers - thanks to warmer water temperatures and plenty of rust, limescale and other contaminants to feed on - but legionella can also be spread to other parts of the building through the vapour that evaporates from these systems.

Treatment and regular maintenance of water systems is essential for preventing legionella growth. For example, swimming pools are usually chlorinated to stop legionella and other bacteria from spreading in the water.

call us on 03333 22 0800 to discuss your requirements.

What is Legionnaires’ disease?

Legionnaire’s disease (or simply Legionnaires’) is a type of pneumonia caused by legionella bacteria. There is no vaccine for the disease, which can even prove fatal in some cases. Older people and those with weaker immune systems are particularly vulnerable to contracting the disease. Call us on 03333 22 0800 to discuss your requirements.

What are my responsibilities for preventing the spread of Legionella?

All employers and health and safety dutyholders have a legal obligation to control and prevent legionella growth. Anyone who does not adequately prevent exposure to legionella can be prosecuted under:

  • HWSA (the Health and Safety at Work Act), and COSHH (Control of Substances Hazardous to Health)
  • Violations can result in prison time, even if no one has been seriously harmed or killed.

The Health and Safety Executive (HSE) has published the L8 Approved Code of Practice (ACoP L8) which sets out guidelines for controlling the spread of legionella. There’s no legal obligation to follow this code of practice, but failure to comply may be used in criminal proceedings as proof that you didn’t take adequate precautions against legionella growth.

Dynamika can help your business follow ACoP L8 guidelines and comply with the HSE’s legionella legislation.

Find out more at our Legionella Risk Assessments page, or call us on 03333 22 0800 to discuss your requirements.

What if I rent my business property from my landlord?

In some cases, the obligation to prevent legionella growth and exposure will fall to multiple dutyholders. Dynamika will be able to advise you on who holds the responsibility for your property - just give us a call on 03333 22 0800.

What are BS7593 and AG1/2001?

British Standard 7593 (aka BS7593:2006) is a code of practice for the treatment of water in domestic hot water central heating systems, issued by the British Standards Institution. It covers the risks involved in central heating systems, the preparation work required for pre-commissioning a system, and the maintenance work required to keep it running safely and efficiently.

Application Guide AG1/2001 is a guide issued by the Building Services Research and Information Association (BSRIA). It covers the pre-commissioning cleaning of pipework systems for heating and cooling systems, including recommendations for preventing the growth of legionella and other bacteria.

Dynamika provide pre-commissioning services for domestic central heating systems, in accordance with BS7593 and AG1/2001 standards. Click here to find out more.

What is BS8558?

British Standard 8558 (aka BS8558:2015) is a code of practice for the design, installation, testing and maintenance of domestic water supply services, also issued by the British Standards. Just give us a call on 03333 22 0800.