The measure includes worldwide deaths due to poor water quality, sanitation, and insufficient hygiene. Poor water supply is composed of two factors - poor water quality (i.e. infection with pathogenic organisms), and poor water quantity (i.e. insufficient amounts for use in personal and domestic hygiene. Poor sanitation is lack of facilities for safe disposal of human excreta. Poor personal hygiene is considered inadequate personal cleansing such that transmission of infections still occurs. Poor domestic hygiene refers to inadequate cleansing of the home, food, or utensils such that transmission of infections still occurs.