3M™ Filter Cartridges
(formerly Cuno / AQUA-PURE^®)

Q. "Why are the #APC77 and the #APC78 replacement cartridges not for sale in California, Iowa or Wisconsin?"
A.The #APC77 filter cartridges were originally sold for the reduction of volatile organic chemicals. The #APC78 filter cartridges were originally sold to reduce certain amounts of lead from your water supply. The California Department of Health says these are "health claims" being made by the filter company. The #APC77 and #APC78 replacement cartridges have NOT been certified by the California Department of Health. The California Department of Health will not allow the sale of these cartridges for residential use in California unless they are certified by them. Recently the States of Iowa and Wisconsin have adopted California's Department of Health policies making it illegal to sell these products in those States without certification as well.

Q. "I just installed a new filter cartridge and my water is cloudy/white?"
A. After you install a new filter you should run it for a few minutes. This should be done for all brands of filter cartridges. Cloudy or white water usually indicates air in the line and this is natural and normal with the replacement of a cartridge. Air will enter in the housing, lines and cartridge. Just run the water for a few (up to 5) minutes and the cloudy conditions will go away (unless you have VERY cold water in which case it is the oxygen in the water that could be making the water look cloudy). It is always a good idea to run the water free flowing for a few minutes after installing any brand or type of new filter cartridge. Also, when you're using drinking-water filter cartridges that contain carbon, it is recommended that you run the faucet tap for at least 20 seconds prior to each use to flush very fine black carbon powder that may be present.