Biocides can be utilized to tackle water treatment problems. There are many great lessons to be learned. I can remember 20 years ago when I first started working in water chemistry it was not unusual to have customers who did not know the consequences of poor microbial management within water loops. inadequate heat exchange, corrosion, rapid getting old equipment, all because of an inexperience (willing ?) How to prevent bacterial growth. Read this: biocide chemical for new information. There was the problem of legionella spreading through water loops, which led to public hygiene concerns in cooling towers. Biocides are now allowed in all circumstances, according to best practices and the law. This not only helps in hygienic practices and decreases the possibility of legionella spread but also helps solve technical problems (improved heat transfer, decreased corrosion, and fouling due to the growth of bacterial). The increasing awareness of hygiene has been the main factors driving the use of biocides in the water industry. Efficaciously it has generated important benefits in the field of public hygiene However, it has also created safety issues. There aren't any biocide molecules that are harmless. The Biocidal Products Directive (EU 528/2012, BPR) is designed to enhance the operation and protection of the market for biocidal products in the EU (ECHA Understanding BPR). But the BPR is not a law that prohibits or restricts the use of hazardous products. Professionals are more at risk when they utilize more biocide. It's a simple issue that I want to draw all people's attention. The risk of chemical exposure, which could be the cause of chemical skin injuries, respiratory irritation and lung damage, as well as long term cancers It is not just a matter of time that the risk increases when the product is being manufactured and delivered and delivery, but also during equipment installation and maintenance. The most vulnerable workers might not be chemical experts with extensive training but electrical and mechanical technicians who are not regularly exposed to chemicals. I have already stated that biocides should be used in a fair and sustainable way. It is now the moment to consider the biocide strategy and the chemicals used. Which dosages are being used? How are they delivered to the consumer? Are they safe? Are they easy to maintain? There is no simple and rule-of-the-thumb solutions that can solve all issues However, there are small steps, innovative ideas, best practices, etc that will lead to better safety for all.