Used and trusted by military and emergency organizations worldwide, Potable Aqua Water Purification Tablets With PA Plus disinfect contaminated drinking water in any situation. Included is the two-step process of water treatment for drinking water: Potable Aqua Water Purification Tablets for emergency water treatment to make water bacteriologically suitable to drink, and Potable Aqua with PA Plus tablets to neutralize the after-taste and color. A great addition to your camping accessories or emergency water preparedness kit, these water treatment tablets are effective against bacteria and Giardia lamblia in any emergency water purification situation.