The student technical trip took place in Krolewski Park in Gdansk. Students measured basic parameters of water as temperature, pH, conductivity with simple measurement tools. Parameters as odor, smell, color, turbidity, suspended solids, and concentration of dissolved oxygen (after addition of chemical reagents) were measured only organoleptic. Water quality was assessed as quite good and satisfactory. The performed exercise aimed to verify the ability to evaluate water quality by residents and stakeholders with no technical education.