13.-0730. Horizontal learning.

13.- WASH Glossary.
13.-0729. Hookworms.
13.-0728. High-strength.
13.-0727. High-strength calcium hypochlorite - ( HCSC ).
13.-0726. High-rate digestion.
13.-0725. High-pressure membranes.
13.-0724. High rate algae pond.
13.-0723. Hexachlorobenzene - ( HCB ).
13.-0722. Herbicide.
13.-0721. Helminth.
13.-0720. Helical rotor pump.
13.-0719. Heavy metal.
13.-0718. Heat engine.
13.-0717. Healthcare waste.
13.-0716. Health.
13.-0715. Health and Hygiene issues.
13.-0714. Headworks.
13.-0713. Headwater(s).
13.-0712. Headwall.
13.-0711. Head - ( meters of head ).
13.-0710. Hazardous..
13.-0709. Hazardous waste.
13.-0708. Hazard.
13.-0707. Hardwater.
13.-0706. Hardware.
13.-0705. Hardness.
13.-0704. Handwashing.
13.-0703. Handwashing facility.
13.-0702. Handpump.
13.-0701. Hand-dug well.