microbiocidal control method in drinking line systems. This invention provides a method for controlling microbes in a drinking line system when poultry and / or pigs are absent from the area where the drinking line system is located. The method comprises: i) contacting the drinking line system and an aqueous microbiocidal solution； and (ii) washing said drinking line system with water and / or an aqueous solution comprising one or more scale removers at least once after said contact with said aqueous microbiocidal solution, wherein said aqueous microbiocidal solution is formed of. components comprising water and a concentrated aqueous biocidal solution selected from a) an aqueous biocidal solution having an active bromine content of about 50,000 ppm or more, whose solution is formed of components comprising water and (i) bromine chloride or bromine chloride and bromine, with or without the use of chlorine and (ii) alkali metal base salt of sulfamic acid and / or sulfamic acid, alkali metal base and water, wherein the relative proportions of (i) and (ii) are such that the atomic nitrogen to active bromine ratio is greater than 0.93, and wherein the ph of the composition is greater than 7, or b) an aqueous biocidal solution formed of components comprising water and (i) at least one fo selected from ammonium bromide, hydrogen bromide, at least one alkali metal bromide, at least one alkaline earth metal bromide and mixer of any two or more of the above, (ii) a chlorine source, optionally (iii ) at least one inorganic base and optionally (iv) sulfamic acid and / or a metal salt of sulfamic acid, or c) a combination of a) and b). any degradation of drinking line system materials by contact with said aqueous microbiocidal solution is minimal.método de controle microbiocida em sistemas de linha potável. esta invenção fornece um método para controlar micróbios em um sistema de linha potável quando aves e/ou suínos estão ausentes da área onde o sistema de linha potável está l
