  The environment, especially water, gets polluted due to industrialization and
urbanization. Pollution due to industrialization and urbanization has harmful
effects on both the environment and the lives on Earth. This polluted water can
cause food poisoning, diarrhea, short-term gastrointestinal problems,
respiratory diseases, skin problems, and other serious health complications. In
a developing country like Bangladesh, where ready-made garments sector is one
of the major sources of the total Gross Domestic Product (GDP), most of the
wastes released from the garment factories are dumped into the nearest rivers
or canals. Hence, the quality of the water of these bodies become very
incompatible for the living beings, and so, it has become one of the major
threats to the environment and human health. In addition, the amount of fish in
the rivers and canals in Bangladesh is decreasing day by day as a result of
water pollution. Therefore, to save fish and other water animals and the
environment, we need to monitor the quality of the water and find out the
reasons for the pollution. Real-time monitoring of the quality of water is
vital for controlling water pollution. Most of the approaches for controlling
water pollution are mainly biological and lab-based, which takes a lot of time
and resources. To address this issue, we developed an Internet of Things
(IoT)-based real-time water quality monitoring system, integrated with a mobile
application. The proposed system in this research measures some of the most
important indexes of water, including the potential of hydrogen (pH), total
dissolved solids (TDS), and turbidity, and temperature of water. The proposed
system results will be very helpful in saving the environment, and thus,
improving the health of living creatures on Earth.
