Deerfield Beach sits at the northern edge of Broward County, its boundary drawn by the Hillsboro Canal, and water threads the whole town together — canal, Intracoastal and ocean. Edwards Sprinklers works with a gentler kind of water: the sprinkler lines that carry a lawn through the long dry season, which here stretches from late fall into spring. In the dark hour before an April sunrise, while the air is still cool and the streets are empty, well-set spray heads throw arcs that settle evenly over the grass and leave the sidewalk dry. Alongside that sprinkler work, the business does lawn care — cutting, trimming and edging the turf the water keeps green. Every drop and every pass stays in Deerfield Beach.