A published report by the Institute of Medicine determined that men over 18 years should drink 3.7 liters (about 13 cups) of water. Intake for women of the same demographic is 2.7 liters (about 9 cups) daily. If you live is where the temperature is hot or you exercise, your water requirements will be higher. Read tips on buying a water filter in my ebook, "What's in your drinking water? How to make your water safer" at Bit.ly/saferwater
Consuming adequate amounts of bottled water is expensive. Filter your tap water and use your extra income to buy more organic fruits and vegetables. If you cannot afford to buy all of your fruits and vegetables from the organic shelf, purchase those found to have the highest amounts of pesticides. According to the Environmental Working Group (EWG) you should buy these fruits and vegetables from the organic section of the market.
Hot peppers Cherries
White potatoes Pears
Sweet bell peppers Apples
lean more about pesticide levels in foods at https://www.ewg.org/foodnews/dirty_dozen_list.php