In this article, a system for monitoring water quality parameters based on a network of wireless sensors has been developed to improve the accuracy of measuring water quality in real time. The system consists of a water quality parameters collection terminal, a distributed sensor network, a Transmission Control Center base station and a remote online monitoring system. Parameters accumulation terminal dumps the water quality parameters and transmits them to the central base, then sends them back to the remote online monitoring center via GPRS and adjusts the water quality, pH (potential hydrogen) and DO (dissolved oxygen) to the parameters to be entered from the user’s side. The results show that the required parameters of the measurement accuracy are 2,1%, 1,3% and 3,6%, respectively, the measurement error of temperature, pH and DO, and the Maximum error of the dissolved oxygen value is 1,9%, 2,6% and 3,1%. The whole system works stable and reliable.