Scaling water quality guidelines

Table 3.5 Generally-accepted water quality guidelines to minimize RO membrane scaling.

EPA also sets National Secondary Drinking Water Regulations for contaminants that affect the aesthetic (e.g., taste, color or odor), cosmetic (e.g., skin or tooth discoloration) or technical (e.g., corrosivity or scaling) qualities of drinking water. These non-enforceable guidelines include secondary MCLs and recommendations for monitoring (EPA, 2004b). 

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