Civil Code (Cap. 16), article 467

467. The owner of a building in which there is no cistern, who, in virtue of an easement constituted without title, is obliged to allow the rain-water falling on the roofs of that building to f low to a neighbouring tenement, may, at any time, on payment of an indemnity, cause such easement to cease if he has constructed i n such building a cister n for the collection of such rain-water. When easement is said to be created by “the disposition of the owner of two tenements”.