In order to keep your drinking water safe from contamination, the faucet that OtO will be connected to needs protection from the possibility of water flowing backward.
Commonly known as a backflow device, government regulations specify what type of backflow device is required to adequately prevent water from flowing backward when a device such as OtO is connected to the water supply.
Some homes come with a form of backflow prevention already installed, but some do not.
Since the type of backflow device and maintenance schedule required by regulation varies at the city level, you must check with your own municipality codes to ensure your solution is compliant.
OtO is not responsible for damage or harm caused by not installing and maintaining the appropriate backflow device for your area.
If you have any questions, please do not hesitate to reach out.