13.-1240. Reactor.

13.- WASH Glossary.
13.-1239. Reactive oxygen species.
13.-1238. Reach.
13.-1237. Rating curve.
13.-1236. Rapid sand filtration.
13.-1235. Rapid sand filter.
13.-1234. Rapid gravity filters.
13.-1233. Raised latrine.
13.-1232. Rainwater.
13.-1231. Rainwater harvesting.
13.-1230. Rainwater harvesting raised surface collection.
13.-1229. Rainwater harvesting ground surface collection.
13.-1228. Rainfall patterns.
13.-1227. Radioactive waste.
13.-1226. Radial flow pump.
13.-1225. Quaternary.
13.-1224. Quality control.
13.-1223. Pyrolysis.
13.-1222. PUR.
13.-1221. Pupa.
13.-1220. Pumping water level.
13.-1219. Pumping test.
13.-1218. Pumping lift.
13.-1217. Pump.
13.-1216. Pump station.
13.-1215. Pump perfomance curve.
13.-1214. Pump housing.
13.-1213. Pump efficiency.
13.-1212. Pump discharge.
13.-1211. Pump capacity.