100. PRESSURE Water utilities shall make every effort to maintain a pressure on their distribution systems which shall not at any time fall below the minimum of 35 PSI or rise above the maximum pressure of 125 PSI at customer's service connections. However, on rural lines where fire protection is not furnished, the minimum pressure may be as low as 25 PSI.105. FIRE HYDRANT SERVICE In addition to furnishing domestic and commercial service, each utility furnishing fire hydrant service must be able, within a reasonable period of time after notice, to supply fire hydrant service to local fire fighting equipment and facilities. No utility shall, however, be required to install larger mains or fire hydrants or otherwise supply fire service unless proper contractual arrangements shall have been made with the utility by the municipality, agency or individual desiring such service.