Exact Leak Detection (ELD). About us. Exact Leak Detection (ELD) is a leak detection and plumbing company. ELD has been at the forefront of the leak detection industry due to superior professionalism, high quality service, and a strong commitment to customer service. Exact Leak Detection is looking for a full-time self-motivated Office Assistant Team Member with a minimum of 1 year experience in an office setting, seeking long-term employment wit...