Tanzanians now have only 27 days to go before they go to the polls to elect their next president. And, one of the things they want the presidential candidates to address is the provision of water. An opinion by survey company Twaweza East Africa indicates that almost half of Tanzanians think provision of safe drinking water is one of the biggest challenges of the government. Our reporter Francis Ontomwa spent the day with some of the citizens and now brings us their story.