Flow measurements for rate purposes shall be based upon one hundred (100) percent of daily metered water consumption if all water used is supplied by a public utility company. Otherwise, the amount of sewer usage shall be determined by the director in accordance with the provisions of this chapter. If, in the opinion of the director or the opinion of the discharger, it is necessary to install metering devices in order to accurately determine the sewer usage, such metering devices shall be installed, when directed by the city, at the discharger's cost, and the specifications therefor shall be approved by the city. Flow measurements shall be made at regular intervals or continuously recorded as determined necessary by the city and billings shall be adjusted appropriately. (Ord. 2006-02 (part), 2006: Prior code § 4288)