(

a) The mutual water company described in

Section shall provide at least a minimum level of water service to its customers for fire protection purposes as an inherent part of the water system design in accordance with the standards set forth in this section. The standards set forth in this

section are the minimum levels of water service that the mutual water company shall provide and shall not preclude the mutual water company from designing a fire protection system that meets higher standards, nor preclude any governmental agency from setting higher standards in any area subject to its jurisdiction. A mutual water company may request a fire protection agency to approve a fire protection system that does not meet the standards set forth in this

chapter upon a showing by the mutual water company that the proposed system is adequate for fire protection purposes. (

b) In the initial construction, extension, or modification of a water system, any one of which is required to serve (1) a new user or (2) a change in use, the facilities constructed, extended, or modified shall be designed to be capable of providing, for a sustained period of at least two hours, in addition to the requirements of the average daily demand within the area to be served, the minimum flow requirements set forth below opposite the classification of land use to be served: Land Use Minimum Flow 1.

Rural, residential with a lot density of two or fewer units per acre primarily for recreational and retirement use gpm 2. Lot density of less than one single-family residential unit per acre gpm 3. Lot density of one or two single-family residential units per acre gpm 4. Lot density of three or more single-family residential units per acre 1,000 gpm 5. Duplex residential units, neighborhood business of one story 1,500 gpm 6. Multiple residential, one and two stories; light commercial or light industrial 2,000 gpm 7. Multiple residential, three stories or higher; heavy commercial or heavy industrial 2,500 gpm