13.-1090. Pathways.

13.- WASH Glossary.
13.-1089. Pathogen.
13.-1088. Pathogen.
13.-1087. Pasteurisation.
13.-1086. Pasteurisation ( of sludge ).
13.-1085. Parts per million.
13.-1084. Parts per billion.
13.-1083. Particle size.
13.-1082. Participatory rural appraisal - ( PRA ).
13.-1081. Participatory planning tools.
13.-1080. Participatory Hygiene and Sanitation Transformation - ( PHAST ).
13.-1079. Participation.
13.-1078. Parasite.
13.-1077. Parallel pumps.
13.-1076. Palaeozoic - ( also Paleozoic ).
13.-1075. Ozonation.
13.-1074. Oxygen demand.
13.-1073. Oxidize.
13.-1072. Oxidation.
13.-1071. Oxidation ditch - ( OD ).
13.-1070. Overland relay.
13.-1069. Overland flow.
13.-1068. Overhung latrine.
13.-1067. Overexploitation.
13.-1066. Outlet.
13.-1065. Outflow.
13.-1064. Outfall.
13.-1063. Other water sources.
13.-1062. Osmosis.
13.-1061. Organics.