Log-reduction in Water Treatment - Page 2
Systems considering significant changes to their disinfection practices must first evaluate current levels of Giardia inactivation (and virus inactivation if applicable) and consult with their state primacy agency for approval before implementing those changes. Thus, compliance with the provisions of the rule will improve public health protection by reducing the risk of exposure to Cryptosporidium in small systems serving fewer than 10,000 people even as those systems begin to take steps to comply with related DBP standards.
What are the monitoring provisions?
A groundwater system is subject to test if it does not already provide treatment to remove 99.99 percent (4-log) of viruses. If a system receives notice of positive coliform distribution it must take a source water sample within 24 hours. The system will not have to take a sample test if the state can determine that the source of coliform was an issue with the distribution system and not the water source. If any samples show fecal indications, the system must collect an additional five repeat water samples over the next 24 hours.
Compliance monitoring ensures that Ground Water Sources provide at least 4-log treatment of viruses using chemical disinfection, membrane filtration, or state-approved treatment technology and are effectively achieving this level of treatment. During the process of treating viruses, other chemicals such as chlorine may be added to water to rid of these viruses. This may not make us sick immediately as a virus would but over time these chemicals are not good for our body either. To protect yourself and your family even further, point-of-use water filtration systems are used to remove all types of contaminants from your drinking water. Since drinking water is the key component in the overall functioning of our body and it makes sense that the quality of the water should be just as important as the quantity. Therefore, we hope your drinking water can be free of contaminants to ensure proper health and wellness. Here’s to making healthy drinking water a habit in our daily lives!
