It is NOT safe to use contaminated water to brush your teeth! Instead, use boiled or bottled water. To treat water, fill your pot with water and heat it until you see bubbles reach the top.
People Also Ask
Don't rinse with water straight after toothbrushingAfter brushing, spit out any excess toothpaste. Don't rinse your mouth immediately after brushing, as it'll wash away the concentrated fluoride in the remaining toothpaste. Rinsing dilutes it and reduces its preventative effects.