As far as the human physiology is concerned, water is the most vital element for the overall well being. It plays crucial role in all bodily processes by providing a universal medium. Dehydration is a condition, in which water in a living body reduces unusually, and it is likely to encounter in daily life. Dehydration impairs both physical and mental performance in a human being. The present paper reports conceptualization, design and development of the wearable embedded device for hydration level measurement in the human being. Wearable Medical Devices (WMDs) are the emerging trends in the biomedical domain as they offer patient management system and ensures heath and medical well being by continuous monitoring and thus makes the ubiquitous medical treatment possible that too at minimal cost. Though there are several hydration monitoring techniques, the one used in this paper is bioelectrical Impedance Analysis (BIA).