Interpretation in this Part

In this Part, unless the context otherwise requires“cleaning agent” means any laundry detergent, dish-washing compound, household cleaner, metal cleaner, degreasing compound, commercial cleaner, industrial cleaner, phosphate compound or other substance intended to be used for cleaning purposes; “nutrient” means any substance or combination of substances that, if added to any waters in sufficient quantities, provides nourishment that promotes the growth of aquatic vegetation in those waters to such densities as to– (a) interfere with their use by human beings or by any animal, fish or plant that is useful to human beings; or (b) degrade or alter or form part of a process of degradation or alteration of the quality of those waters to an extent that is detrimental to 34 their use by human beings or by any animal, fish or plant that is useful to human beings; “water conditioner” means any water softening chemical, anti- scale chemical, corrosion inhibiter or other substance intended to be used to treat water.