100. DISCONTINUANCE OF SERVICE Where negligent or wasteful use of water exists on a customer's premises seriously affecting the general service, the utility may discontinue the service if such conditions are not corrected within five (5) days after giving customer written notice of intent to do so.105. METERING OF FLAT RATE CONNECTIONS In order to protect itself against serious and unnecessary waste or misuse of water, the utility may meter any flat rate service connection and apply the regularly established meter rates where the customer continues to waste or misuse water five days after the utility has notified him in writing to discontinue such practice.110. WATER SAVING DEVICES The utility may require water saving devices to be installed on air conditioning and refrigeration devices of over three tons. The company may require the use of cooling towers or other water saving devices on air conditioning and refrigerating equipment of more than three tons capacity.