Water Glossary

A (3) B (2) C (11) D (4) E (1) F (1) G (3) H (1) I (4) J (1) L (2) M (4) O (1) P (4) Q (1) R (4) S (4) T (1) U (1) W (3) X (1) Z (3)
  • Acre-foot (AF)

    A common water industry unit of measurement. An acre-foot is 325,851 gallons, or the amount of water needed to cover one acre with water one foot deep.

  • Aquifer

    An underground geologic formation of rock, soil or sediment that is naturally saturated with water; an aquifer stores groundwater.

  • Arsenic

    A naturally occurring element in the environment. Arsenic in drinking water commonly comes from natural sources in the ground, but some can come from industrial pollution. At high concentrations it can cause cancer.