Watsan matters

8.30.≈A9≈ Axial flow pump - ( GWN - GTO ).

8.29.≈A8≈ Radial flow pump - ( GWN - GTO ).

8.28.≈A7≈ Rope pump - ( GWN - GTO ).

8.27.≈A6≈ Diaphragm pump - ( GWN - GTO ).

8.26.≈A5≈ Deep well progressive cavity pump - ( GWN - GTO ).

8.25.≈A4≈ Deep well piston pump - ( GWN - GTO ).

8.24.≈A3≈ Direct action pump - ( GWN - GTO ).

8.23.≈A2≈ Piston-plunger suction pump - ( GWN - GTO ).

8.22.≈A1≈ Hydraulic ram, ( impulse pump ) - ( GWN - GTO ).

8.21.≈I9≈ Seawater intake - ( GWN - GTO ).

8.20.≈I8≈ Protected borehole - ( GWN - GTO ).

8.19.≈I7≈ Protected dug well - ( GWN - GTO ).

8.18.≈I6≈ Riverbank filtration - ( GWN - GTO ).

8.17.≈I5≈ Groundwater dam - ( GWN - GTO ).

8.16.≈I4≈ Protected spring intake - ( GWN - GTO ).

8.15.≈I3≈ River and lake water intake - ( GWN - GTO ).

8.14.≈I2≈ Rainwater harvesting : Ground surface collection - ( GWN -GTO ).

8.13.≈I1≈ Rainwater harvesting : Raised surface collection - ( GWN - GTO ).

8.12.≈S12≈ Diesel- and Gasoline-powered energy system - ( GWN - GTO ).

8.11.≈S11≈ Electric-powered energy system - ( GWN - GTO ).

8.10.≈S10≈ Solar-powered energy system - ( GWN - GTO ).

8.9.≈S9≈ Wind-powered energy system - ( GWN - GTO ).

8.8.≈S8≈ Human-powered energy system - ( GWN - GTO ).

8.7.≈S7≈ Gravity - ( GWN - GTO ).

8.6.≈S6≈ Springwater - ( GWN - GTO ).

8.5.≈S5≈ Groundwater - ( GWN - GTO ).

8.4.≈S4≈ Brackish water, seawater - ( GWN - GTO ).

8.3.≈S3≈ Ponds, lakes and reservoirs - ( GWN - GTO ).

8.2.≈S2≈ Rivers and streams - ( GWN - GTO ).

8.1.≈S1≈ Rainwater - ( GWN - GTO ).