Apr 24, 2019 - 02:51 PM
Thank you for contacting Biobidet Support.
The BB-2000 or any of the models in our product line do not have water filters preinstalled. There is on this model a self-cleaning automatic feature that will push water through the nozzle holes if any sediment has settied in the nozzle.
If you have hard water as you stated it is highly recommended to purchase our water filters separatly at biobidet.com and select the Iodine Filters. These should be changed every 3 months for the most effective filtering.
Please see the link below for the Iodine Filters.
Source: Water Filters