A watering disc for use in a nipple assembly of a watering line system has an outer rim portion and an upper surface extending inwardly from said outer rim portion to an aperture provided through a center of the watering disc. The upper surface defines a plurality of separators and a plurality of individual compartments in an alternating manner about a circumference of the watering disc. The plurality of separators generally extend from proximate the center of the watering disc to the outer rim portion in order to define each individual compartment between the outer rim portion and two adjacent separators. Each individual compartment is substantially formed in a concave manner and are configured to receive and retain water from the watering line system. The watering disc is formed of plastic and has reflective particles integrally formed therein for attracting poultry to the watering disc.