Water quality attributes can have a direct or indirect effect on poultry performance. Environmental pollution with heavy metals, especially lead is considered as a very serious concern because these metals cannot be degraded and stay permanently in the environment. In this study lead concentration in poultry drinking water was estimated in Namakkal district of Tamilnadu. The samples were collected from 90 poultry farms in the Namakkal district. The collected samples were analyzed by graphite-furnace atomic absorption spectrophotometer to determine the concentration of lead. The results of the study showed that the concentration of lead in poultry drinking water samples in the Namakkal district ranges from 0.00 ± 0.00 to 3.59 ± 1.82 ppb, which were within the permissible limit (10 ppb). Hence the poultry drinking water is safe for consumption.