Article 1

     1.  The  purpose of this Directive is to prevent the pollution of
groundwater  by  substances  belonging  to  the families and groups of
substances  in  lists I or II in the Annex, hereinafter referred to as
"substances  in  lists  I  or  II", and as far as possible to check or
eliminate the consequences of pollution which has already occurred.
     2. For the purposes of this Directive:
     (a)  "groundwater"  means all water which is below the surface of
the  ground  in  the  saturation  zone  and in direct contact with the
ground or subsoil;
     (b) "direct discharge" means the introduction into groundwater of
substances  in lists I or II without percolation through the ground or
subsoil;
     (c)  "indirect discharge" means the introduction into groundwater
of substances in lists I or II after percolation through the ground or
subsoil;
     (d)   "pollution"   means  the  discharge  by  man,  directly  or
indirectly,  of  substances or energy into groundwater, the results of
which  are  such  as  to endanger human health or water supplies, harm
living  resources  and  the  aquatic ecosystem or interfere with other
legitimate uses of water.