13.-1646. Typhoid.

Watsan matters
13.-1645. Twin-pits for pour flush.
13.-1644. Twin pit latrines.
13.-1643. Twin pit for pour flush.
13.-1642. Twin pit dry system.
13.-1641. Turbine.
13.-1640. Turbine pump.
13.-1639. Turbidity.
13.-1638. Turbid water.
13.-1637. Trihalomethane - ( THM ).
13.-1636. Trickling filter.
13.-1635. Tributary.
13.-1634. Trench latrine.
13.-1633. Treatment.
13.-1632. Treated water.
13.-1631. Trash trap.
13.-1630. Transpiration.
13.-1629. Transmissibility - ( T ).
13.-1628. Transmissibility - ( groundwater ).
13.-1627. Transfer stations and sewer discharge stations.
13.-1626. Transfer station and storage.
13.-1625. Transfer station and storage.
13.-1624. Transboundary aquifer.
13.-1623. Train-the-trainers.
13.-1622. Traditional supplies.
13.-1621. Tradable water rights.
13.-1620. Toxins.
13.-1619. Totally dissolved solids - ( TDS ).
13.-1618. Totaliser.
13.-1617. Total volume of the earth´s freshwater resources.