The reduction in microbial load (or bioburden) by chemical means. The reduction of contamination, usually achieved through cleaning as a preparation step, followed by using chemicals, biocides, and disinfectants as sanitizing agents. Sanitation does not guarantee the complete absence of microorganisms.
Merriam-Webster Online Dictionary
sanitation (noun)1.
the act or process of making - sanitary
2.
the promotion of hygiene and prevention of disease by maintenance of sanitary conditions (as by removal of sewage and trash) - often used attributively a sanitation truck sanitation workers
Tidiness, Neatness, Orderliness, Sanitation, Cleanliness, Sterility, Asepsis, Decontamination, Sanitization, Cleansing, Purity, Refinement, Filtration, Clarification
