Allowable Pressures. Under normal conditions of use of water, the pressure at a customer's service connection shall be: Not less than 25 psig; and Not more than 125 psig. Exceptions to Pressure Requirements. Pressure outside the limits specified will not be considered a violation when the variations: Arise from the action of the elements; Are infrequent fluctuations not exceeding 5 minutes' duration; Arise from service interruptions; Are from causes beyond the control of the utility; or Arise from variations in service elevations which are local and which can be controlled in a satisfactory manner.