The super(137)Cs and super(40)K activities and transfer factors from soil to vegetables, grass, and milk from villages located around Tarapur Atomic Power Station (TAPS) were determined using high-resolution gamma spectrometry. A total of 32 soil, 21 vegetable, 23 dry paddy grass, and 23 milk samples were collected from 23 different agricultural farms from various villages around TAPS to determine transfer factors for natural environment. The mean concentration values for super(137)Cs and super(40)K in soil, grass, and milk were 2.39+/-0.86Bqkg super(-1), 0.31+/-0.23Bqkg super(-1), and 12.4+/-5.7mBqL super(-1) and 179+/-31Bqkg super(-1), 412+/-138Bqkg super(-1), and 37.6+/-9.3BqL super(-1), respectively, for soil-grass-milk pathway. In the soil-vegetation pathway, the mean concentrations values for super(137)Cs and super(40)K were 2.15+/-1.04Bqkg super(-1), 16.5+/-7.5mBqkg super(-1), and 185+/-24, 89+/-50Bqkg super(-1), respectively. The evaluated mean transfer factors from soil-grass, grass-milk, and soil-vegetation for super(137)Cs were 0.14, 0.0044, and 0.0073 and that of super(40)K were 2.42, 0.0053, and 0.49, respectively. Only 15 out of total 44 milk and vegetable samples were detected positive for super(137)Cs, indicating a very low level of bioavailability.