13.- WASH Glossary.

13.-1690. Vacuum.

13.-1689. Vacuum truck.

13.-1688. Vacuum sewers.

13.-1687. Vacuum on demand.

13.-1686. Vacutug.

13.-1685. UV-stable.

13.-1684. UV-C radiation.

13.-1683. UV-B radiation.

13.-1682. UV-A radiation.

13.-1681. User interface.

13.-1680. Use.

13.-1679. Use of biogas.

13.-1678. Use and or disposal.

13.-1677. Urine.

13.-1676. Urine-diverting flush toilet - ( UDFT ).

13.-1675. Urine-diverting dry toilet - ( UDDT ).

13.-1674. Urine storage.

13.-1673. Urine storage tank.

13.-1672. Urine diversion.

13.-1671. Urine diversion components.

13.-1670. Urinal.

13.-1669. Urea.

13.-1668. Urea treatment - ( emerging technology ).

13.-1667. Upstream.

13.-1666. Upstream - Downstream water conflict.

13.-1665. Upflow filtration.

13.-1664. Upflow anaerobic sludge blanket reactor - ( UASB ).

13.-1663. Unserved.

13.-1662. Unsaturated zone.

13.-1661. Unprotected spring.