| Business | Phone |
| Andersens Sprinkler Svc Ronkonkoma 11779 | (631) 288-5048 |
| Long Island Irrigation 322 Collington Dr, Ronkonkoma 11779 | (631) 737-4717 |
| Casalyn Contracting Inc 1894 Lakeland Ave, Ronkonkoma 11779 | (631) 588-4700 |
| Hydro Dynamics 700 Portion Rd, Ronkonkoma 11779 | (631) 472-4053 |
| Romax Irrigation 80 Beech Dr, Ronkonkoma 11779 | (631) 467-0623 |