Glossary of Water and Wastewater Terms
A B C D E F G H I J K L M N O P Q R S T U V W Y Z5 random terms from our glossary
algae (AL-jee)
Microscopic plants containing chlorophyll that live suspended in water or attached to submerged surfaces, producing oxygen during sunlight hours and using oxygen during night hours. Their biological activities affect the pH, alkalinity, and dissolved oxygen (DO) of the water.
effective soil depth
The depth of soil in the leach field trench that provides a satisfactory percolation area for the septic tank effluent.
heterotrophs
Organisms that use organic matter for energy and growth. Animals, fungi, and most bacteria are heterotrophs.rate of return
A value that indicates the return of funds received on the basis of the total equity capital used to finance physical facilities. Similar to the interest rate on savings accounts or loans.
defect
A point where a pipe or system structure has been damaged or has a fault. Also called a fault. Also see surfaced defect.
