How is drinking water disinfected?
Our tap water (UK) comes from various sources;
Water quality varies from region to region however unwanted elements are a constant; The germs contained in water are treated with chlorine regardless of where you live.
Before chlorination and filtration our water system was the source of diseases such as cholera, dysentery, and typhoid. However, in the UK, permanent water chlorination began in 1905.
Although chlorine has saved us from the likes of dysentery and typhoid, there are significant drawbacks to this traditional disinfection method.
With Chlorine disinfection comes the formation of trihalomethanes TTHM’s (disinfection by-products) Although there are over 600 TTHM’s, 4 are of concern in drinking water:
- Chloroform (CHCl3)
- Bromodichloromethane (CHCl2Br)
- Dibromochloromethane ( CHClBr2)
- Bromoform – (CHBr3)
It is the Chloroform that is of most concern; studies suggest links to cancer, and at high levels, reproductive effects.
Ttrihalomethanes are only one group of many hundreds of possible disinfection by-products—the vast majority of which are not monitored—and it has not yet been clearly demonstrated which of these are the most plausible candidate for the cause of these health effects
This all sounds pretty nasty doesn’t it? Well there is an alternative;
Water Disinfection using ESOL
ESOL has a number of applications in both the drinking water and waste water sectors of the water industry.
- ESOL has been approved under regulation 31 of the Water Supply Regulations 2000 for use in public water supplies in the UK.
- ESOL is currently used as a direct chlorine replacement in mobile water disinfection units.
- ESOL is Safe
- ESOL is cost effective
- ESOL is environmentally sustainable