In this work an estimation of nutrient loads (expressed as Dissolved Inorganic Nitrogen and Inorganic Phosphorous) in drainage water from a coastal irrigated area, was undertaken. The procedure is based on the calculation of drainage discharge with the use of data from the drainage pumping station and then on the assessment of the concentrations of nutrients in drainage water. The case study examined is the cultivated land of Agoulinitsa (Peloponnese - Greece). Results from this study could be useful for taking the necessary measures for environmental protection.