Think it is a 50 years plan.

When I moved to the house, thought the sewerage network is done completely. Later discovered that they have the main pipes running along the street only. Now they are connecting the main line with the septic tank inside the garden. However they are doing it in 2 stages. First they connect the main line to the house boundaries. This they did not finish. It is taking them more than 2 months so far. Next step is to connect to the septic tank inside the garden. In other words, they have to make trench inside the garden to continue the job. Hopefully by 2016 they will be finished