Whenever the board by ordinance finds that because of circumstances existing in the district it is just and reasonable that petitions for special rates of taxation be heard and determined, any person having an interest in land may file with the secretary a verified petition alleging all of the following:
(a)
His land or a described portion of it was, prior to the acquisition or establishment by the district of any water system or waterworks serving the territory in which the land is situated, irrigated from another system of works than the works of the district.
(b)
It has continued ever since to be exclusively so irrigated.
(c)
It is entitled to a special rate of taxation.