Helping you plan for your future water needs
In the St. Johns River Water Management District, three aquifer systems are
used for water supply: the surficial aquifer system, which is the shallowest,
the intermediate aquifer system and the Floridan aquifer system, which is the
deepest and most productive aquifer system.
An aquifer is an underground body of rock,
consisting of sand, cemented shell or limestone, that is sufficiently permeable
to transmit and yield significant quantities of water to wells.
The Floridan aquifer is a major source of drinking water in Florida. However,
the surficial aquifer is a significant source of water in St. Johns, eastern
Volusia, Seminole, Brevard and eastern Indian River counties. Flagler, Baker,
Clay, Nassau, Duval, Putnam and eastern Orange counties have intermediate
aquifers capable of supplying varying quantities of potable (drinkable)