Domestic water pH and turbidity monitoring system.

Abstract

Access to safe water is vital for every human being to prevent health related issues. However, treated water is prone to contamination through pipe leakages, mud; silt, chemical precipitates, etc. In order to ensure provision of safely treated water, the authorities in charge need to constantly monitor it through its storage and distribution to customers. Turbidity and pH are some of the important factors when assessing quality of Water. The aim of this project was to design a domestic water pH and turbidity monitoring system that could constantly log the turbidity and pH of water, and alert the authorities in case the levels lie outside the acceptable standards for potable water. This system has two subsystems, i.e. the water quality sensing module and the data visualization module. The water quality sensing module comprises: an Arduino UNO board to which 3 sensors are connected, i.e. the DFRobot gravity analog turbidity sensor, gravity analog pH sensor and waterproof DS 18B20 temperature sensor. These sensors measure the turbidity, pH and temperature values of the water respectively before passing it on to The NodeMCU which relays it the ThingSpeak cloud platform for storage. From the ThingSpeak this information is processed and displayed on a website in graphs and tabular form. It also shows the most recent status reading for each parameter on the site. This system makes it easier for authorities to constantly track and store changes in the quality of water for use to prep better treatment processes as well as catch problems in the distribution process early enough.