(4) Heating facilities that conformed with applicable law at the time of installation, maintained in good working order. (3) A water supply approved under applicable law that is under the control of the tenant, capable of producing hot and cold running water, or a system that is under the control of the landlord, that produces hot and cold running water, furnished to appropriate fixtures, and connected to a sewage disposal system approved under applicable law. (2) Plumbing or gas facilities that conformed to applicable law in effect at the time of installation, maintained in good working order.
(1) Effective waterproofing and weather protection of roof and exterior walls, including unbroken windows and doors. (a) A dwelling shall be deemed untenantable for purposes of Section 1941 if it substantially lacks any of the following affirmative standard characteristics or is a residential unit described in Section 17920.3 or 17920.10 of the Health and Safety Code:
