Section 17-0509. Minimum treatment required

1.  As  used in this section, the term "effective secondary treatment"
  shall mean the removal of  substantially  all  floating  and  settleable
  solids  and  the  removal  of  at least eighty-five percent of suspended
  solids and at least eighty-five percent of five day  biochemical  oxygen
  demand, or such other standard as may be adopted pursuant to the Act.
    2.  The  minimum  degree  of  treatment  required for the discharge of
  sanitary sewage into the surface waters of the state shall be  effective
  secondary treatment, provided, however, that additional treatment may be
  required  consistent  with the standards established for specific waters
  by the  department  pursuant  to  section  17-0301  or  with  standards,
  criteria,  limitations,  rules  or  regulations  promulgated  or applied
  pursuant to title 8 hereof.