Nuisance Contaminant : Constituents in water which are not normally harmful to health but may cause offensive taste, odor, color, corrosion, foaming, or staining
EESiFlo North America, Terminology and Glossary: Water and Wastewater Terms, Pennsylvania, USA 2002. flowmeterdirectory.com/flowmeter_terminology, (Wtr and Wastewater - Amer) {559}