Section 15-1519. Reservoir to be kept in repair

The  reservoir  and  appurtenant works shall be kept in safe, sanitary
  and serviceable condition and to this end shall be  repaired,  remodeled
  or  additional  work  done thereon at the request of the applicant or as
  required by  the  department.  All  such  work  shall  be  done  by  the
  department  at  the  expense of the applicant. If the applicant shall at
  any time determine that its needs for  an  additional  supply  of  water
  require  the  enlargement  of  the  reservoir  in  order  that a greater
  quantity of water can be stored therein or drawn therefrom, a new  water
  supply  application  shall be made to the department asking for approval
  of the desired modifications of the original plans.