Brine is the biggest issue with some desalinators, not this one. Power can be a constraint, too. It depends on how much power you have available or can pay for

Brine is the biggest issue with some desalinators, not this one. Power can be a constraint, too. It depends on how much power you have available or can pay for, how much fresh water you need and how pure, how much you can buffer, etc. In short, power/cost is a constraint sometimes.