Section 10-4.1-31 - Water service rates(a) The department shall conduct a cost of service study annually, based upon enterprise accounting, and a water service rates analysis at least every three years.(b) Water service rates for each department owned public water system shall be established by the commission and attached to this chapter. Effective July 1, 2019, once each fiscal year the commission may adjust base water service charges by no more than ten per cent per thousand gallons of water delivered. Effective upon approval by the commission, water service rates are set as follows: (1) The table entitled, "Hoolehua Water System Service Rates Approved on April 17, 2018", dated April 17, 2018, attached as Exhibit "A" at the end of this chapter and made part of this chapter.(2) The table entitled, "Kawaihae Water System Service Rates Approved on May 14, 2018", dated May 14, 2018, attached as Exhibit "B" at the end of this chapter and made part of this chapter.(3) The table entitled, "Anahola Water System Service Rates Approved on August 21, 2018", dated August 21, 2018, attached as Exhibit "C" at the end of this chapter and made part of this chapter.[Eff 6/25/2021] (Auth: HHC Act §222) (Imp: HHC Act §221)