Water supplies can contain living organisms such as bacteria, protozoa, worms, viruses and fungi. When these organisms are the sources of diseases, they are known as pathogens.
Pathogens can lead to infectious diseases such as typhoid fever, dysentery, giardiasis, cryptosporidiosis, cholera, jaundice, hepatitis, undulant fever and tularemia, making the water supply unsafe for human consumption. Disinfection plays a key part in turning non-potable water into water that is microbiologically safe to drink.
Eliminating pathogens to protect human health
Of all the water purification technologies used in the bottled water industry, distillation is the only process that replicates the hydrological cycle: water is heated until it forms steam; the steam is cooled to condensation, creating water, minus the impurities left behind in the boiling. It is a simple evaporation-condensation-precipitation system.
New technology meets cost challenges for bottled water industry
In recent years, chromium became a more talked about contaminant among consumers. It helped that not only was it being covered in news reports, but even Hollywood took a chance at bringing it to the forefront of concerns among consumers with its movie, “Erin Brockovich.”
In this last section of a three-part series, the use of ozone, ionization, distillation and aeration is discussed in a simple fashion to help the beginner rationalize the importance for a full understanding of these technologies and the need, again, for a professional water treatment specialist.
This is the final article in a three-part series discussing water chemistry and technology basics.
Brushing up on water treatment 101, part 3
If our water supplies actually do come under attack, the question remains: Is there any way for consumers to protect themselves? Unfortunately, it seems to be too early to tell, yet some companies are beginning to emerge with products that may be the answer.
Can POU/POE technology aid the war on bioterrorism?
On June 22, 2000, the U.S. Environmental Protection Agency (EPA) announced a proposed rule that would lower the current national primary drinking water standard for arsenic.
Addressing Arsenic Contamination Through Residential Drinking Water Treatment