Water and Wastewater Terms Beginning H

A B C D E F G H I J K L M N O P Q R S T U V W Y Z

hairline crack
haloacetic acid (HAA)
hand rod
handhole trap
hand-off-automation (HOA) switch
hard water
hardness, water
harmful physical agent
haunches
haunching
hazard communication
Hazard Communication Standard (HCS)
hazard statement
hazardous material management plan (HMMP)
hazardous waste
head
head loss
header
headworks
heat sensor
hectare
hepatitis
herbicide
hertz (Hz)
heterotrophic
heterotrophs
hexavalent chromium
HGL
high-line jumpers
high-velocity cleaner (HVC)
hindered solids separation
HMI
hose bib
hot tap
house connection
house service
house sewer
HTH (high test hypochlorite)
hub
human machine interface (HMI)
humic acid
humic substances
humus sludge
hydrated lime
hydraulic
hydraulic block
hydraulic cleaner
hydraulic cleaning
hydraulic conductivity (K)
hydraulic continuity
hydraulic grade line (HGL)
hydraulic gradient
hydraulic jump
hydraulic loading
hydraulic population equivalent
hydrogen ion concentration
hydrogen sulfide gas (H₂S)
hydrogeologist
hydrologic cycle
hydrology
hydrolysis
hydrophilic
hydrophobic
hydropneumatic
hydrostatic pressure
hydrostatic system
hydroxide precipitation
hygroscopic
hypochlorination
hypochlorinators
hypochlorite
hypolimnion