Hydrochloric AcidDrug and Narcotic ControlChlorineChlorine CompoundsChloridesHydrogenHydrogen BondingHydrogen PeroxideDisinfectantsHydrogen SulfideChloride ChannelsChloraminesDisinfectionOxidesSwimming PoolsSodium HypochloritePorphyrinsVinyl ChlorideWater MicrobiologySodium ChlorideWater SupplyPolyvinyl ChlorideBromineHalogenationWater PurificationHydrogen-Ion ConcentrationHypochlorous AcidPhotochemotherapy