lake apoyo

I AM BRANDDDDD NEW SO THIS MAY BE BORING OR OLD HAT TO SOME YET TO ME I DO APPRECIATE THE REAL TRUTH AND NOT SOME HYPE FROM A REAL ESTATE AGENT.I WAS INTERESTED IN LAKE APOYO BECAUSE IT SEEMED VERY PEACEFUL AND STILL CLOSE TO GRANADA. I DID HEAR THE THE WATER ITSELF WAS NOT DRINKABLE, WHAT IS THE SOURCE FOR DRINKING WATER AND HOW SAFE IS IT. I ALSO HEARD THAT LAKE MASAYA WATER WAS POSSIBLY DRINKABLE.IF THERE IS ANYBODY IN THIS AREA THAT WOULD LIKE TO HELP ME WITH THE DO'S AND DON'TS I WOULD LIKE YOUR INPUT. THANK YOU