A. A commercial customer may use water for purposes which produce uncontaminated wastewater satisfactory for direct discharge into means other than the public sewer system. These purposes may include irrigation, cooling, heating, or processing. In such cases, the customer may submeter the uncontaminated water flow not discharged into the public sewer system and have adjusted the metered water usage to the property so that he/she may be charged only for water flow actually discharged into the public sewer system.

B. All submetering shall be subject to the written approval of the Department and installed at the customer's sole expense.

C. The Department shall have the authority to regulate all submetering activities including, but not limited to, the approval of plans and specifications for the installation and operation of the submetering system; approval of successful inspection of the system; procedures for continued operation and adjustment of the system; and the calibration and testing of the submeters on a regular basis at the sole expense of the customer.

D. All customers who enter into a sewer service sub-metering agreement shall provide monthly sub-metered readings from the 15th to the 15th of each month. Failure to provide sub-meter readings by the 25th of the month during three of any twelve-month period will be cause for automatic cancellation of the Agreement and the sewer service account to revert back to charges for the water and/or sewage flows based on the master utility water meter(s) serving the property.