All water pumps, tanks, filters, softeners, and similar appliances and devices shall be protected
against contamination. Where outdoor hydrants are installed at surface grade, such installations shall be on concrete or other impervious platforms with a top surface not less than 6 inches above the adjoining grade and extending not
less than 3 feet in all directions from the hydrants. The drains from frost-proof hydrants shall spill on grade, discharge
to independent seepage pit, or discharge to indirect waste in accordance with Section P-1201.2.