is sometimes aggravated due to the non-uniform distribution of rainfall. Individual practices also play an important role in determining the quality of water. As the demand for environmental protection is increasing, the need to protect the water environment becomes an important factor [4]. Water scarcity unexpectedly is very common in India due to the lack of warning systems in the building tanks [5]. Systems with automatic meter systems have been developed without any human intervention to promote water management [6]. Depending upon the consumption of the water, the warning system is implemented for the water tanks [7].  
The significance of retaining water quality shows the increasing necessity of advanced technologies for monitoring the water and manage the water quality [8; 9]. The earlier methods require an individual to take samples of water and testing is performed done manually consume a lot of time and labor. At present, the advancement in technology has led to the development of automatic systems with global systems for mobile communication (GSM)/global packet for radio service (GPRS) technology using sensors [10; 11]. However, the remote systems which are developed for water quality are having power constraints as the system is deployed in the outdoor environment where the separate infrastructure for powering the remote system is lacking [12]. Most of the remote systems are operated on battery power. The evolution of wireless sensor networks (WSN) has minimized the power consumption, as the system communicates the data regarding the sensors during the prescribed time interval [13]. Moreover, the widespread internet utilization in the global world led to the establishment of real-time monitoring technology, i.e., internet of things (IoT) [14]. IoT connects all the physical things over the virtual world through the internet and it assists to implement real-time monitoring of the water quality from any remote location [15].  
In the previous studies, the system implemented for water quality and water tank management is done with IoT. However, the communication protocol namely global system for mobile communication (GSM), and wireless fidelity (Wi-Fi) that are implemented in previous studies for monitoring the water level and water quality consumes maximum power consumption during transmission. Additionally, there is a lack of a real-time system that simultaneously monitoring the level quality of water and also controls the water pump automatically with the same hardware prototype through wireless communication. To overcome the limitations, we have proposed IoT-enabled architecture and system for monitoring the water tank with customized hardware and cloud-enable Virtuino App. The main contribution of the study is as follows:  
* An IoT-enabled architecture is proposed and implemented for monitoring the level and quality of water in the domestic water tank with customized build hardware.
* The customized hardware of the upper tank monitoring unit is built on a 2.4 GHz RF module to communicate with lower tank monitoring and an ESP 8266 Wi-Fi module for enabling to visualize and monitoring the status of the water tank through the internet.
* Proteus simulation environment is utilized for designing the schematic of the customized hardware.
* The calibration of the pH sensor and ultrasonic value is conducted for presetting the actual value in the hardware prototype for obtaining the error-free value during real-time implementation.
* Cloud server enabled Virtuino app is employed for visualizing and monitoring the status of the domestic water tank.  
The structure of the paper is organized as follows: Section 2 covers the literature review. Section 3 covers the proposed architecture and Section 4 covers the hardware description including schematic design. Section 5 covers the working diagram and simulation and Section 6 covers the experimental setup and results. Section 7 covers the conclusions and Section 8 presents the future scope and challenges.