Water and Wastewater Terms Beginning N

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NSDWR (National Secondary Drinking Water Regulations)

Non-enforceable guidelines regulating contaminants that may cause cosmetic effects (such as skin or tooth discoloration) or aesthetic effects (such as taste, odor, or color) in drinking water. EPA recommends secondary standards to water systems but does not require compliance. States may choose to adopt them as enforceable standards. Also called secondary standards