The filling of marginal lands in close proximity
to groundwater in order to provide for sufficient area to make it
suitable for the installation of a sewage disposal system is not considered
an acceptable practice and such lands are considered as not suitable
from a sanitary point of view for human habitation and for the protection
of groundwater and watercourses. Watercourses are defined in Regulation
15.01, of 310 CMR 15.00, the State Environmental Code, Title 5, Minimum
Requirements for the Subsurface Disposal of Sanitary Sewage.