You can irrigate our grass with sea water because....
Seashore Paspalum is a halophytic plant
are plants that are capable of flourishing under conditions of high
salinity. Until now these halophytes have not been considered worthy of
landscape use. Research performed at the University of Georgia, Texas A&M
University, and by BFI have produced astonishing results. Not only are these
grasses worthy of landscape use, but BFI has specific varieties of
seashore paspalum and seashore dropseed that have been developed that can be mowed to 1/8th-of-an-inch, withstand brackish and
sea water irrigation, and maintain the fine texture and color that are typical
of many championship golf courses around the world.
Antigua-Barbuda, West Indies