Regarding cleanliness in winemaking, see under pollution.
In viticulture, this is understood to mean the contamination (lat. contaminare = to stain) of soil, water and air, and thus ultimately in wine, by microorganisms or environmentally harmful, toxic substances. The vine is exposed to many of these negative influences during the vegetation cycle in the vineyard. The most common pollutants in soil, air and water are residues of agrochemicals (such as pesticides,...
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Egon Mark
Diplom-Sommelier, Weinakademiker und Weinberater, Volders (Österreich)