Salt dissolver?

Question

what can dissolve the natural salt in water?

there's a 370 (parts per million) salt in the water

how can we lower that to about 200 ppm?

preferably with no harmful residue/ after effect.

even so.. mention ideas and aftereffects

Answer 1

we can disolve more sugar in water by heating up water for sure.

you may want heat water up

Answer 2

Add more water.

Answer 3

Add distilled water (.85 x the volume present).