Teahouses charge trekkers for boiled and filtered drinking water. Though bottled water is available for purchase, we discourage the use of plastic bottled water on the route due to the negative impact on the environment. You can bring a reusable bottle with you and fill it with drinking water. Before you purchase filtered water, your guide will inspect its condition. Please rest assured that before you drink the water, our guide will meticulously inspect it to ensure that it has been properly boiled and treated.