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Section 25. Damage to District’s Property. The consumer shall be liable for any damage occurring to a meter or other equipment or property owned by the District caused by act of the consumer or his tenants, agents, employees, contractors, licensees or permittees, including the breaking or destruction of locks by the consumer or others on or near a meter, and for any damage to a meter that may result from hot water or steam from any boiler or heater on the consumers premises, and the District shall be reimbursed by the consumer for any such damage promptly on presenta­tion of a bill therefor. Section 26. Responsibility for Water Receiving Equipment. The consumer shall at his own risk and expense furnish, install and keep in good and safe con­dition all water equipment that may be required for receiving, controlling, applying and utilizing water, and the District shall not be responsible for any loss or damage caused by the improper installation of such water equipment, or the negligence, want of proper care or wrongful act of the consumer or of any of his tenants, agents, employees, contractors, licensees or permittees in installing, maintaining, using, operating or interfering with any such equipment. The District shall not be responsible for damage to property caused by spigots, faucets, valves and other equipment that are open when water is turned on at the meter, either when turned on originally or when turned on after a temporary shut-down. Section 27. Prevention of Ground-Wire Attach­ments. All persons, firms, or corporations are strictly forbidden to attach any ground-wire, or wires to any plumbing which is or may be connected to any service connection or main belonging to the District, and the District will hold the consumer liable for any damage to the property of the District occasioned by any such ground-wire which is now or may hereafter be attached. Section 28. Use of and Damage to Fire Hydrants. No person or persons, other than those designated by the Chief of the appropriate Fire Department or others especially authorized by the proper public official or by the District, shall open any fire hydrant or attempt to draw water therefrom or in any manner damage or temper with any fire hydrant. Any violation of this rule will be prosecuted according to law. 16 Section 29. Installation of Pressure Regulators. Whenever the normal operating pressure at the’ con­sumer’s premises exceeds 140 pounds per square inch, the District will install at its expense a pressure regu­lator and relief valve and will regulate the pressure to suit the consumer's requirements. This equipment will be inspected and maintained by the District and will remain the property of the District. For all pressures 140 pounds per square inch and less pressure regulating equipment, if desired by the consumer, together with the necessary relief valve, may be installed by the con­sumer on his side of the meter and at his expense. In all such installations, whether made by the District or the consumer, the District shall not be liable for any damage in any manner caused by or arising from the failure or defective condition of such pressure regu­lators and relief valve or for any damage that may occur through the installation, maintenance or use of such equipment. Section 30. Cross-Connections. The regulations of the California State Department of Public Health and of the United States Public Health Service prohibit un­protected cross-connections between the public water supply and any unapproved source of water. The regu­lations of the Department of Public Health further state that no water service shall be granted to a consumer where a possibility exists of backflow of contaminated water from’ the consumer’s premises into a public water system. To comply with the regulations of these health agencies, the District will require the installation of ap­proved double check valves or other protective devices by and at the expense of the consumer before service will be granted in any of the following cases: (a) Where another fresh water supply is already available from a well, spring, reservoir or other source. If the consumer agrees to abandon this other supply, and agrees to remove all pumps and piping necessary for the utilization of this supply, the installation of backflow devices will not be required. (b) Where salt water, or water otherwise polluted, is available for industrial or fire protection purposes, or where fresh water hydrants are or may be installed on piers or docks. (c) Where the premises are or may be engaged in industrial processes using or producing process waters 17