The delivery flow rate, upon which user charges will be made, shall be based upon one hundred percent of water consumption, or flow rates measured and substantiated by the user. Strength of sewage discharged from each user shall be established based upon twenty-four-hour composite samples made by the city and tested by the city’s wastewater treatment facility laboratory. Composite samples shall be taken at such intervals as to assure that the strength estimates reflect the true strength of the user’s waste over the year. Each user shall provide a location where its total waste stream may be sampled. If the user feels that the city’s sampling program reflects too high a waste strength, it may arrange to have samples taken by a state-certified and state-approved testing laboratory at the user’s cost. (Ord. 016/2021 § 2; Ord. 722, 1981)