De or het waterconsumptie?

The correct Dutch article is:

de waterconsumptie

Rule Words ending in -tie and -sie: almost always de. See the rule

How to use waterconsumptie

the waterconsumptiede waterconsumptie
this waterconsumptiedeze waterconsumptie
that waterconsumptiedie waterconsumptie
our waterconsumptieonze waterconsumptie
your waterconsumptiejouw waterconsumptie
every waterconsumptieelke waterconsumptie
which waterconsumptie?welke waterconsumptie?
a big waterconsumptie / the big waterconsumptieeen grote waterconsumptie, de grote waterconsumptie