Because of the key roles of Internet of Things platforms in almost all domains of everyday life, this article aims to provide farmers with a cost-effective solution for irrigating their crops in order to improve the management of irrigation water by using IoT technology and wireless sensing networks. The experiments in this paper were accomplished as part of the SWAM project, which provides a valuable tool for water management. The proposed system is based on various sensors (water quality and air quality), allowing multiple environmental factors to be monitored at the same time. Monitored parameters include turbidity, pH, dissolved oxygen, and water temperature. Using smart algorithms, the gathered data will be processed into legible and useful data for farmers. During the summer, the measured parameters were observed for three months in order to establish conclusions on the water quality and its impact on crops. The paper focuses on the innovative IoT technology, its implementation promoting advances in the field of water management and agriculture. The proposed system combines the IoT technology, efficient data transmission and dashboard visualization in a platform aimed at improving the decision-making of farmers and reducing the waste water of irrigation systems while also improving crop production.