In most cases, manufacturers may choose to test and certify as many performance reduction claims that fit their product, but at least one reduction claim must be successfully completed to achieve a complete system certification. All complete systems must be evaluated for materials safety, structural integrity (if subject to line pressure), product performance and product literature, labeling and packaging. Each category can be broken into subcategories that depend on product type and anticipated end use.ĭrinking Water Treatment Units for Residential Water Treatmentĭrinking water treatment unit (DWTU) standards cover different types of products and treatment technologies but are similarly structured. There are many different standards that apply to residential water treatment products, but for the most part, residential water treatment products can be separated into three categories: systems (units), components and chemicals. Whether you are new to the industry, a seasoned water treatment specialist or somewhere in between, understanding the standards that apply to residential water treatment products can be a daunting task. Unger can be reached at 630.929.2524 or by e-mail at search terms from residential water treatment, standards, certification Unger, CWS-VI, is technical manager for the WQA.
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