Introduction

Drinking water treated with chlorine, although generally safe, can contain undesirable substances such as trihalomethanes (THMs). These chemical compounds present significant health risks, in particular by increasing the risk of bladder cancer.

Understanding Trihalomethanes

Trihalomethanes (THMs) are chemical substances among more than 600 Chlorinated by-products (CPS), they are formed mainly during the water chlorination process.

The four most common THMs are:

• chloroform,
• bromodichloromethane,
• dibromochloromethane,
• bromoform.

They are commonly found in drinking water and can pose risks to human health.

Water Chlorination and THM Formation

The main purpose of water treatment is to protect public health as untreated water can contain a variety of contaminants. Treating water with chlorine is an effective method of killing pathogens such as bacteria, viruses, parasites and other micro-organisms that can cause diseases such as dysentery, cholera, typhoid and gastroenteritis. However, when chlorine comes into contact with natural organic matter (such as humic and fulvic acids from decomposing vegetation), chemical reactions occur, leading to the formation of THMs.

THMs and Bladder Cancer

To minimise health risks, regulatory bodies have set limits for the concentration of THMs in drinking water. Despite these limits, Santé Publique France (the national public health agency) estimates that around 18% of bladder cancer cases could be attributed to chlorinated by-products. These compounds can cause mutations in the DNA of bladder cells, leading to the development of cancer. Bladder cancer is of particular concern because of its potentially aggressive nature and the risk of recurrence. THMs can be absorbed through ingestion, inhalation and skin contact, exposing individuals even when showering or bathing.

A study by the Barcelona Institute for Global Health (ISGlobal) analysed THM levels in water in 26 European countries, concluding that almost 5% of bladder cancer cases in Europe were linked to THMs. Although most countries comply with EU regulatory limits (11.7 µg/L versus 100 µg/L), some countries such as Cyprus, Estonia, Hungary, Ireland, Italy, Poland, Portugal, Spain and the UK exceed them.

Reducing Exposure to Trihalomethanes

To minimise exposure to trihalomethanes, it is crucial to filter water before consumption or domestic use. British Berkefeld® water filters offer an effective solution to this problem.

British Berkefeld® Water Filters: A Barrier Against THMs

British Berkefeld® water filters are specially designed to remove a wide range of contaminants, including trihalomethanes. As water passes through the activated carbon filter, THMs are trapped in the pores of the carbon dramatically reducing THM levels in drinking water.

Here are just a few of the benefits of British Berkefeld® filters:

• Superior filtration: British Berkefeld® filters use multi-layer technology to remove THMs, heavy metals, bacteria and other contaminants.
• Durability : Made from high-quality materials, the filters are designed to last a long time, even under conditions of intensive use.
• Reliability: British Berkefeld® filters are certified by independent bodies, ensuring compliance with safety and performance standards.
• Easy to use : Easy to install and maintain, British Berkefeld® filters guarantee constant access to clean, healthy water.

Conclusion

Trihalomethanes in drinking water present a significant health risk, particularly in relation to bladder cancer. Using British Berkefeld® water filters can significantly reduce your exposure to these harmful substances, protecting you and your family's health. Opting for a high quality water filter is a crucial step towards a healthier and safer lifestyle.

Your wellbeing starts with the water you drink, find the right model for you on our site.