helge jahn from the kfw has an appointment with a man from the public water utility.ent bank is willing to offer funds to treat the sewage which is already contaminating the city's drinking water. if nothing's done, people could get sick. >> the sanitation problems are reflected in the health of the people. there are many infectious diseases. the wastewater problem doesn't just look unsightly, it also affects people's health. >> helge jahn wants to help. >> the number of residents of granada connected to the sewer system should rise from 20 or 25 percent today to 80 percent. the second part of the project will be to overhaul the existing (sewage) treatment plant that's not working properly. as even after it's been treated, the water still looks like this: contaminated with algae and residue from detergents. more than 17 million euros are to be invested in granada to improve water quality and keep the lake clean. that's vital. lake nicaragua is the largest drinking water reservoir in central america. >> so still much work to go there. and that's all we have time for on