De or het grondwaterwinning?

The correct Dutch article is:

de grondwaterwinning

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

How to use grondwaterwinning

the grondwaterwinningde grondwaterwinning
this grondwaterwinningdeze grondwaterwinning
that grondwaterwinningdie grondwaterwinning
our grondwaterwinningonze grondwaterwinning
your grondwaterwinningjouw grondwaterwinning
every grondwaterwinningelke grondwaterwinning
which grondwaterwinning?welke grondwaterwinning?
a big grondwaterwinning / the big grondwaterwinningeen grote grondwaterwinning, de grote grondwaterwinning