13.-1406. Sewerage.

Watsan matters
13.-1405. Sewer.
13.-1404. Sewer pumping stations.
13.-1403. Sewer force main.
13.-1402. Sewer discharge station.
13.-1401. Sewage.
13.-1400. Sewage treatment plant.
13.-1399. Settling.
13.-1398. Settling tank - ( basin ).
13.-1397. Settling pond - ( water quality ).
13.-1396. Settler.
13.-1395. Settlement phase.
13.-1394. Settled sewer.
13.-1393. Services.
13.-1392. Service.
13.-1391. Service provider.
13.-1390. Service level.
13.-1389. Service delivery approach.
13.-1388. Served.
13.-1387. Series pumps.
13.-1386. Sequence batch reactor - ( SBR ).
13.-1385. Septic.
13.-1384. Septic tank.
13.-1383. Septage.
13.-1382. Separate sewers.
13.-1381. Semi-permeable.
13.-1380. Semi-permeable bed.
13.-1379. Semi-confined aquifer.
13.-1378. Semi-circular bunds.
13.-1377. Semi-centralised drinking water treatments.