In this work, we present the basic engineering for the development of an open-source-based Autonomous Surface Vehicle (ASV) project capable of monitoring water quality. The vessel is based on a small-sized catamaran design. The ASV can communicate with the operator on land through telemetry radios and also via the use of a radio control transmitter. The Manta+35 multiparameter probe is used for environmental parameter measurements, which allows storing data obtained by its sensors for later download and analysis. The electronic components of the control system are selected. For localization, navigation, and communication, the Pixhawk 6C along with a series of Holybro components based on Ardupilot are employed, while rechargeable lithium polymer batteries are used to power the system. The control architecture of the ASV is presented, along with a checklist describing the steps to be followed by the operator. The mission control is executed on a PC using the Mission Planner software, responsible for mission control.