High performance instrumental analysis tools are currently used for discovering pharmaceuticals in surface water at trace level. These are only available in specialized labs, expensive, complex and relatively slow. This causes high costs for analysis and monitoring programs, increased risk (health or production losses), limited analysis capacity, etc. Because of cost, time and capacity, screening of large numbers of sample is often not possible or at least reduced. All these issues can be overcome if screening test could be performed on-site by non-specialists or even automatically, motivating the submission of our project proposal suggesting a new sensing approach. The modern state of electronics allow to organize efficient systems for on-site and autonomous monitoring based on electrochemical sensors coupled to android smartphones (see for example PalmSens). Moreover, such sensors can be combined with programmed robotic systems such as Arduino (www.arduino.cc). Basically, the system may allow monitoring of surface or ground water, taking a sample when a suspicious signal from a chemical sensor is received. This sensor can move and collect information in different points of surface water to discover a potential source of contamination. The AXES research group (Belgium) has a positive experience with development a portable electrochemical.