In this study, the radioactivity analysis was performed in drinking water of Hatay province which is in the southeast region of Turkey. Using ten channels low-level proportional counter, the average gross and gross activity concentrations of the 39 water samples were measured as 36.69 and 116.36mBq/L, respectively. All values of the gross and gross were lower than the limit values of 500 and 1,000mBq/L, recommended by World Health Organization (WHO). The average annual effective doses were calculated to be 7.50 Sv for the -emitters and 58.61 Sv for the -emitters. The results obtained in this study indicate that the average annual effective doses for all water samples are below the reference level as 0.1mSv, recommended by WHO.