(2) In issuing an order authorized by subsection (1) of this section, the commission shall consider the following factors for the proposed affected area:
(a) Present and projected density of population.
(b) Size of building lots.
(c) Topography.
(d) Porosity and absorbency of soil.
(e) Any geological formations which may adversely affect the disposal of sewage effluent by subsurface means.
(f) Ground and surface water conditions and variations therein from time to time.
(g) Climatic conditions.
(h) Present and projected availability of water from unpolluted sources.
(i) Type of and proximity to existing domestic water supply sources.
(j) Type of and proximity to existing surface waters.
(k) Capacity of existing subsurface sewage disposal systems. [1973 c.835 §216; 1975 c.167 §8]