Common questions that we get on a daily basis from our customers concern the use of water filters with bidet toilet seats – namely, what are they for and why do I need one?

Why would I need a water filter?

An analogy we like to use to help explain the concept of using a water filter for your electronic bidet seat is that of an oil change for an automobile.  It’s easy preventative maintenance that can help prolong the life of your fancy new toilet seat bidet.  The water filters used with bidet seats are “inline” water filters that are installed on the water supply line feeding the bidet.  In simpler terms, it filters the water that goes into the bidet seat.

Isn’t my tap water clean enough?  

For the most part, yes, your tap water is clean enough for bidet seat use.  The trouble is that over time, especially in areas with particularly ‘hard’ water, calcium deposits and other minute solids can build up inside the bidet seat’s water reservoir and nozzles – thereby reducing the spray pressure and/or clogging the nozzles.  Tiny dirt, sand, and rust particles also have a chance of being passed through the water stream so it’s highly recommended by all bidet toilet seat manufacturers to use water filters.

How long do water filters last? How often should I replace them?

Water filters have a life span of 4-8 months depending on usage.  As a rule of thumb, we recommend replacing them every 6 months.

Are they easy to install?

Very.  Water filters are simply screwed on or off the water supply hose that feeds into your bidet seat.  Installation takes a couple of minutes at the most.

I see many different types of water filters online, what are the differences?

Carbon – Carbon filters remove solids and chlorine from the water stream.

Sediment – Recent studies have shown that removing chlorine from the water stream actually allows for algae growth inside the bidet seat. Sediment filters are packed with a synthetic polyester that filters out solids, but allows chlorine to pass through.  Available at

Iodine – Iodine filters remove solids and chlorine from the water stream while also adding trace amounts of iodine to provide sterilization.

Ion – Ion filters remove solids and add ions to the water stream to discourage bacteria and improve hygiene. Available at