hydration and electrolytes

Hi, where I live and work hydration is a major issue. In the hottest months of July, August and September I drink about 6 large nalgene-style water bottles a day. Another concern here is electrolytes, drink too much water and don't eat enough or eat enough salt and you can damage your body even worse, and send yourself into renal failure. So, with that in mind, are sport electrolyte powder packets okay after surgery? They are disgusting but I try to make one of my six daily water bottles an electrolyte bottle. And just so nobody thinks I'm exaggerating the heat, I work in Iraq with the Army and in August/September it gets between

120-130 F. I work indoors thank goodness but it doesn't take a lot of actual exposure to still feel the effects.