The determination of surface water quality at the surrounding ar
ea of the Lam I hao Superphosphate and Chemical Joint Stock Company, Lam Thao district, Phu Tho province was conducted. Two sampling campaigns (dry season and wet season) were done in 2008 at three villages being Thach Son, Chu Hoa and Luong Lo. 18 surface water samples, single and composite, were collected per campaign. The samples collected were analyzed by ICP/MS and colorimetry. pH and temperature were directly measured at the sites, The results showed that there are signs on the impact of local industrial sources to the surface water quality of this area. Average concentrations of Fe and Pb at Thach Son in two sampling campaigns exceeded respective standards of QCVN 08:2008/BTNMT.