How often does the ceramic pre-filter need to be cleaned?

Both sides of the ceramic pre-filter for style A or B should be cleaned weekly or whenever it appears dirty, because without proper cleaning the flow-through may slow significantly. The ceramic side of New style C should be cleaned weekly as well. The ceramic pre-filter will have to be removed to clean both sides. The coloured "slime" that appears on the ceramic pre-filter is water contaminants that your body no longer has to process.

We recommend that you clean the double-sided ceramic pre-filters under cool, running water with a Scotch-Brite scrub sponge (yellow sponge on one side and green scrubbing pad on the other). Use the green side to clean the ceramic side of the filter and the yellow sponge side for the plastic. Please do not use soap or a scouring pad with soap in it as this will just re-clog the pores. After the pre-filter has soaked for 10 minutes (if you’ve been regularly using your Santevia, it will have been well soaked), use the scrubbing pad to give a vigorous scrub to both sides of the pre-filter to unclog the pores.

Full cleaning instructions can be seen on the Weekly Maintenance video.