Water purification tablets are small, portable tablets designed to make contaminated water safe for drinking. They typically contain chemicals like chlorine or iodine that kill harmful bacteria, viruses, and parasites. These tablets are especially useful for outdoor activities, emergency situations, or in areas where clean water is not readily available. To use water purification tablets, simply add the recommended number of tablets to a specified amount of water and wait for the indicated time, usually around 30 minutes. After this period, the water should be safe to drink. It's important to follow the instructions carefully to ensure effective purification.