Annotated Summary

Li, D. L., & Liu, S. Y. (2019). Wireless Sensor Networks in Water Quality Monitoring. [ScienceDirect version]. Retrieved from https://www.sciencedirect.com/science/article/pii/B9780128113301000028

The article focuses on the use of Wireless Sensor Network (WSN) to monitor the water quality. Water quality monitoring includes analysing water properties in freshwater sources such as reservoirs, lakes, and streams to ensure that the water source provides safe drinking water. The use of wireless sensors provides a more accurate water status and able to monitor location with difficult accessibility. One example of a wireless sensor used in water is the Underwater Wireless Sensor Network (UWSN) . It is established through the transmission of acoustic waves. However, the limitation of installing UWSN is it equips with limited battery that is not rechargeable or replaceable. The article states that 71% of the world is covered in water and only 2.5% is fresh water, hence freshwater is a precious resource that needs to be carefully monitored and maintained. The cost of a wireless sensor is low and thus the cost-effectiveness of our solution. To obtain and handle data at a number of distributed sampling points, the ability to interpret the information using low-power wireless communication procedures, which empowers decision-makers to collect data from different wireless sensor devices in a timely manner. The World Health Organisation (WHO) has identified the different water quality standards that specify the safe amount of certain chemical that can be found in the water and different wireless sensor to test the water to ensure that the concentration of the chemical is within the safe drinking water standard and if it is not within the safe drinking water standard it will raise awareness to the authority. The article provides useful information about the different types of sensors for water quality monitoring and gives examples of the application of WSN used in other countries.