Choice of what grade of water to use in a HHO generator: Rainwater, spring water and tap water all contain impurities. A typical analysis will show minerals, suspended solids and other contaminates contained in these varieties. These impurities will precipitate out of the water when subjected to electrolysis.
white race: people of european decent are all grouped together for simplicity(even though we all know of each others variations and tribes), includes skin types of thin brown, to yellow to very white(eye color and hair color has no significance).
White supremacy or white supremacism is a racist ideology centered upon the belief, and promotion of the belief, that white people are superior in certain characteristics, traits, and attributes to people of other racial backgrounds and that therefore white people should politically, economically and socially rule non-white people.