13.- WASH Glossary.

13.-1060. Organic.

13.-1059. Organic waste.

13.-1058. Organic Nitrogen.

13.-1057. Organic matter.

13.-1056. Optimisation of water use in industry.

13.-1055. Optimisation of water use in agriculture.

13.-1054. Optimisation of water use at home.

13.-1053. Operating costs.

13.-1052. Operation and maintenance of water distribution.

13.-1051. Operation and Maintenance - ( O & E ).

13.-1050. Operating expenses - ( OpEx ).

13.-1049. Operating condition.

13.-1048. Open planning of sanitation systems - ( OPSS ).

13.-1047. Open defecation.

13.-1046. Open defecation free.

13.-1045. Open defecation field.

13.-1044. On-site electro-chlorination.

13.-1043. On-site wastewater treatment.

13.-1042. On-site storage and treatments.

13.-1041. On-site sanitation.

13.-1040. On-site sanitation systems.

13.-1039. Off-site sanitation.

13.-1038. Ocean.

13.-1037. Occyst.

13.-1036. Objective tree.

13.-1035. Nutrition.

13.-1034. Nutrient.

13.-1033. Nutrient-enriched filter material.

13.-1032. Nutrient solutions.

13.-1031. NPK rating.