This varies from town to town, and the properties will make you aware when you check in. The majority of the safari camps we work with will provide you with a reusable water bottle which you can fill at the many water stations they have around their camps.  They have well tested, thorough and carefully managed water filtering systems at camp to ensure there is always nice tasting, safe, quality drinking water.  This is to reduce the one time plastic use, and to ultimately remove all one time use plastics from these properties.