It wasn't going to be through water deprivation. It rains and there are rivers and lakes all over, purifying freshwater isn't that hard. They were going to slow cook people with 5-G, make them get thirsty and no water intake would be able to satiate the need for water as they are being unnaturally dehydrated by microwaves. The reference to water being replaced with brawndo "because it has electrolytes" was a nod to their plan. When it became large scale, people were going to deal with as if it were an electrolyte imbalance or deficiency disorder. People are being randomly targeted now with this microwaving. The battle isn't over yet.