Section 35(d) in The West Bengal Factories Rules, 1958
(d)The number of water centers to be provided shall be one "centre" for every 100 persons employed at any one time in the factory: Provided that in the case of a factory where the number of persons employed exceeds 500 it shall be sufficient if there is one such "centre" as aforesaid for every 100 persons up to the first 500 and one for every 200 persons above that :-
