The city shall not be liable for any deficiency or failure in the supply of water to customers, whether occasioned by shutting the water off for the purpose of making repairs or connections or by any other cause whatever. In case of fire, or alarm of fire, water may be shut off to insure a supply for fire fighting. In making repairs or construction of new works, water may be shut off at any time and kept off so long as may be necessary.
(1998 Code, § 3.20, Subd. 1)