On the basis of scientific studies made by the city, it has been determined that certain commercial fertilizers used within the Reeds Lake Drainage District enter into Reeds Lake and Fisk Lake by way of the city storm sewer system and cause excessive growth of vegetation within said lakes and otherwise contaminate the waters of said lakes and that it is necessary in order to prevent future injury and damage to the waters of said lakes to regulate the use of commercial fertilizers within the said Reeds Lake Drainage District.
(Prior Code, § 9.501)