By late July the sandy Suffolk ground gives its water up fast, and a lawn starts going pale from the edges in. Lawn and Turf Sprinklers answers that with plumbing: irrigation systems laid out and installed, heads adjusted so the spray finds the corners and not the sidewalk, spring startups, midseason repairs to broken lines, and the blowout before the first hard freeze. Alongside it comes the turf care that makes the water worth spending — mowing, feeding, keeping the grass thick enough to hold what it's given. Dawn in Central Islip has a sound to it: a soft hiss across a hundred lawns at once, then the click as a zone shuts down. Green by breakfast, and nobody had to stand out there with a hose.