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A sump pit monitoring system for Raspberry Pi

Project description


raspisump is still beta, use the –pre option. This will also install RPi.GPIO if not present on the system.

sudo pip install –pre raspisump

If you want to use charts install maplotlib and numpy

sudo apt-get install python-matplotlib

sudo apt-get install python-numpy

Read the configuration docs copied during setup on your pi at the following location;



Raspi-sump is a sump pit water level monitoring system using a Raspberry Pi and an Ultrasonic Sensor (HC-SR04)

Currently the system monitors the water level in your pit at defined intervals. It sends email sms alerts if the water reaches a critical level, indicating a possible sump pump failure.

The Raspberry Pi uses Linux (Raspbian) which is not a real time OS. This has implications for this type of application as a multitasking OS like Linux will cause some small error variance in the readings, as opposed to an Arduino that uses a RealTime OS.

While the accuracy is fine for a home system, the problem is mitigated by taking a larger sorted sample of readings and using the median reading as the reported one. In my testing so far I have a variance of about one centimeter which is acceptable for a residential monitoring system. It would appear that using the median reading eliminates the infrequent fringe type readings that can give false positives.

Future versions will include; - An offsite web component for viewing historical data, including graphs and water volume - Proper push button shutdown to turn off the pi (raspi-atx) - LCD panel to get a quick glance of the water level without opening the lid.

More Info

Further details provided at

An hourly updating graph is available for view.


Raspi-Sump is beta software. You are welcome to use it but there is no guarantee it will work. Your house may still flood if your sump pump fails. Use for experimental purposes only.

This is not a replacement for remaining vigilant in maintaining your water pumping system. It is one tool you can use to give yourself extra piece-of-mind.

Best practices should also include:

  • A backup pump that triggers at a slightly higher water level than your main pump.

  • The secondary pump should be connected to a seperate dedicated electrical breaker.

  • You should also have a generator that can provide power should you have an extended outage during the spring or other unseasonally wet time of year.

  • if you are building a new home, pay attention to the grade of your property, as you may even be able to let gravity empty your pit for you. That would be the best approach with a backup pump just in case.

Once you have done all of these things, then consider using a monitoring system like Raspi-Sump.


MIT License. I want you to do whatever you want with Raspi-Sump. If you improve it please let me know.


If you add a useful feature please consider forking Raspi-Sump and contributing back by issuing a Pull Request. Use the devel branch for adding new features and if it works I will merge them into Master.

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