In order that the rates and charges may be justly and equitably adjusted to the service rendered to users, the city shall base its charges not only on the volume, but also on strength and character of the stronger-than-normal domestic sewage and wastes which it is required to treat and dispose of. The city shall require the user to determine the strength and content of all sewage and wastes discharges, either directly or indirectly into the sanitary sewage system, in such manner and by such method as the city may deem practicable in the light of the conditions and attending circumstances of the case, in order to determine the proper charge. The user shall furnish a central sampling point available to the city at all times.
(A) Normal sewage domestic waste strength should not exceed a biochemical oxygen demand of 200 milligrams per liter of fluid, suspended solids of 250 milligrams per liter of fluid, phosphorous of ten milligrams per liter of fluid, or oil and grease of 100 milligrams per liter of fluid. Additional charges for treating stronger than normal domestic waste shall be made as provided in § 50.112(A)(3).
(B) The determination of suspended solids, phosphorous, and five-day Biochemical Oxygen Demand contained in the waste shall be in accordance with the latest copy of "Standard Methods for the Examination of Water, Sewage and Industrial Wastes," as written by the American Public Health Association, the American Water Works Association and the Water Pollution Control Federation, and in conformance with "Guidelines Establishing Test Procedures for Analysis of Pollutants," Regulation CFR Part 136, published in the Federal Register on October 16, 1973.
('80 Code, § 24-92) (Ord. 2228, passed 5-1-78; Am. Ord. 2318, passed 10-15-79; Am. Ord. 2615, passed 3-3-86; Am. Ord. 3260, passed 3-19-01)