Yes, tap water in Weymouth, United Kingdom, is considered safe to drink. Water supplies in the United Kingdom are subject to strict regulations and frequent testing to ensure they meet high quality standards. Tap water in Weymouth is supplied by Wessex Water, which regularly tests the water for impurities and additives to ensure safety and cleanliness. However, if you have a sensitive stomach or are not used to the local water, you should opt for bottled water.