The bench scale testings are performed to investigate emergent treatment for lead pollution in water source using the existing process in drinking water treatment plant under the situation that do not break off water supply. The results show that: in the range of studied coagulant dosage, Pb removal efficiency by PFS is significantly better than that by PAC. The effect of pH on lead removal by coagulation is significant, but the turbidity is not. Using Ca (OH) 2 as a pH regulator to enhance the Pb removal is better than NaOH.As a result, adjusting pH of the raw water around 9 by adding Ca (OH) 2 can ensure the concentrations of Pb in effluent below 10 μ g / L, but acid is needed to make the finished water at neutral pH. The order of Pb removal efficiencies by three adsorbent were: natural diatomaceous earth> natural zeolite powder >powdered activated carbon. As the presence of lead in water is mainly particles state, both dissolved, natural diatomaceous earth with good adsorption, enhanced coagulation and filtration capacities has many advantages.