Water Online

June 2013

Water Online the Magazine gives Water & Wastewater Engineers and end-users a venue to find project solutions and source valuable product information. We aim to educate the engineering and operations community on important issues and trends.

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Report Not only does the mandated SY3 (according to the Safe Drinking Water Act) ensure that a review of all NPDWRs is completed every six years, but it also allows for enhancements to existing regulations, while identifying those of immediate concern to be monitored under the Unregulated Continuous Monitoring Program (UCMP), or to have guidelines developed for a NSDWR. With public health concerns always in hand, combined with the issues related to regional freshwater restrictions and shortages, compliance at the state and local levels is at the forefront. list, a list of 116 contaminants (104 chemicals and 12 microbiological) was derived from insights offered by industry experts and public review. Highlights of key chemical contaminants from the current CCL 3 list include various estrogen-based hormones from pharmaceutical manufacturing, groups of insecticides and fungicides widely used in agricultural applications, and manufacturing contaminants such as perchlorates, which are difficult to remove using standard treatment methods. From the list of microbiological contaminants, the key highlights are those viruses and bacteria that can cause varying degrees of gastrointestinal and respiratory illnesses. Effectiveness of standard and advanced systems in the treatment for these types of microbiological contaminants ensures proper treatment levels are determined when developing long-term NPDWR requirements. The date to submit candidates for the CCL 4 list has passed (June 2012); however, this list, combined with data collected in the effective treatment of Importance Of Contaminated Candidate List 3 And The Contaminants Under Review For CCL 4 The development of the CCL 3 list was derived from a larger list of more than 7,500 potential chemical and microbial contaminants. This list was narrowed to 600 potential contaminants, utilizing public health risks and potential occurrence in public drinking water supplies as selection criteria. From that preliminary Tel. +1 800 842 7424 us.info@kemira.com kemira oyj kemira group wateronline.com ■ Water Online The Magazine 9

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