Different between conservancy or water carriage systems?

              Conservancy system

1. The system is unhygienic since                        everything is visible                                   2. Due to putrefication, there is a lot of               foul smell.                                                      3. Compact house design is not possible    4. Large labour force is required.                    5. Water consumption is small.                      6. No technical persons required.                  7. Acute pollution problems.            

          Water Carriage Systems

1. The system is hygienic. Sewers are laid      below the ground and hence                          excreta etc. Is not visible.                         2. No changes of putrefication and hence       no foul smell.                                           3. Compact design is possible .                    4. Labour force is negligible small.             5. Required high water consumption.            6. Technical persons required.                      7. Pollution problems are rare.