De or het waterbedeling?

The correct Dutch article is:

de waterbedeling

Rule Words ending in -ing: almost always de. See the rule

How to use waterbedeling

the waterbedelingde waterbedeling
this waterbedelingdeze waterbedeling
that waterbedelingdie waterbedeling
our waterbedelingonze waterbedeling
your waterbedelingjouw waterbedeling
every waterbedelingelke waterbedeling
which waterbedeling?welke waterbedeling?
a big waterbedeling / the big waterbedelingeen grote waterbedeling, de grote waterbedeling