ESSENCO (initially Nallaseth, Nair & Co) was established in 1986 when companies involved in plumbing contracts in South India were mostly small family-run businesses. Extensive international experience possessed by members of the senior management enabled the establishment of a well-structured professional organisation with a fresh approach to the profession.

At a time when Plumbing was a neglected profession wherein no education/training programme existed, ESSENCO pioneered in conducting in-house training for engineers and supervisors. This resulted in the creation of a team of talented, technically sound plumbing professionals. Many of these individuals have established their own consulting and contracting firms over the last two decades.