Table 1.

The different cities and rural areas and the jobs and tasks measured.

Place	Type of plant and system	Type of jobs	Tasks
Capital	2 big plants, pump stations, sewer network	Working in big plant, Working with sewer network, Working at pump stations	Flushing and cleaning, maintenance, Inspection.
City 1	2 big plants, pump stations, sewer network, cesspools	Working in big plant, Working with sewer network, Working at pump stations, Collecting sewage from cesspools	Flushing and cleaning, maintenance, sucking sewage from cesspools
City 2	1 big plant, pump stations,1 small plant, cesspools	Working in big plant, Collecting sewage from cesspools, Working in small rural plants including sewer network and pump stations	Inspection, flushing and cleaning, maintenance, sucking sewage from cesspools
Rural 1	1 small plant, pump stations, sewer network	Working in small rural plants including sewer network and pump stations	Flushing and cleaning, maintenance.
Rural 2	1 small plant, pump stations, sewer network	Working in small rural plants including sewer network and pump stations	Flushing and cleaning, maintenance.
Rural 3	1 small plant, pump station, sewer network, cesspools	Collecting sewage from cesspools, Working in small rural plants including sewer network and pump stations	Flushing and cleaning, maintenance, sucking sewage from cesspools