The ultrasonic sensors help in measuring the distance, which will be used in this project to measure and water level and send the warning if it goes beyond the safe level. But the problem with ultrasonic sensors is that it gives very high or low readings sometimes,i.e. the readings are not always accurate.

To solve this issue,a time factor can be added, that is if the water level is in the particular range for a given time, then only the warning should be sent. This in itself has some shortcomings but will solve the problem of false warnings.