When you re-order your UltraStream Replacement Cartridge it will now include an upgrade from KDF55 to KDF85 which is a higher level of filtration. The KDF media is responsible for removing heavy metals including mercury, lead, aluminum and copper, as well as bacteria, pesticides, algae and fungi. For more details see our lab test results (attached).
In drought conditions rotting vegetation in the reservoirs causes resulting sulfur dioxide in the water supply. Ionization brings the smell out in the water. You’ll need to add a KDF85 filter before the UltraStream or if you want to exchange your cartridge for the newer cartridge that includes this KDF85 media you can contact us for a filter exchange and we’ll prorate the purchase.