13.-0266. Clay.

Watsan matters
13.-0265. Clay pot and porous capsule irrigation network.
13.-0264. Clarifier.
13.-0263. City Sanitation Plan.
13.-0262. Cistern flush toilet.
13.-0261. Cholera.
13.-0260. Cholera treatment centres ( CTC ).
13.-0259. Chlorine.
13.-0258. Chlorine residual.
13.-0257. Chlorine demand.
13.-0256. Chlorination.
13.-0255. Chlorination ( centralised ).
13.-0254. Chlorinated lime.
13.-0253. Chlorhexidine.
13.-0252. Chemigation.
13.-0251. Chemical waste.
13.-0250. Chemical treatment.
13.-0249. Chemical toilet.
13.-0248. Chemical sedimentation.
13.-0247. Chemical Oxygen Demand - ( COD ).
13.-0246. Chemical contaminants.
13.-0245. Chemical analysis.
13.-0244. Check valve.
13.-0243. CHAST.
13.-0242. Charcoal.
13.-0241. Channels - Drains.
13.-0240. Channelling.
13.-0239. CFU - Colony forming units.
13.-0238. Cesspool.
13.-0237. Cesspit.