Point-of-use (single tap) Granular Ferric cartridge filters can remove small amounts of arsenic from a kitchen faucet for cooking and drinking.  The major disadvantage of this type of system is that only one water tap in the home is treated (water used for bathing and laundry exposes skin to the untreated arsenic levels, untreated taps are also commonly used for teeth brushing). These types of systems generally have a low flow rate, the cartridges need monitoring and replacement, and it is not uncommon for homeowners to exceed the life of the cartridges without even knowing so.  Arsenic treatment media adsorbs the arsenic, so it is important to change cartridges appropriately when needed.   In smaller houses, where economic circumstances prevent whole house treatment, these systems can be a practical solution.

Anion Exchange and Reverse Osmosis systems are not recommended because they remove only one of the two species of Arsenic (Arsenic V).  Reverse Osmosis is also a single tap, cartridge-based system, so it will have the same limitations of a point-of-use system.  Treatment types other than the whole house Granular Ferric adsorbing media, like an anion exchange system, can require the addition of salt and increased maintenance, as well as backwashing a 60-gallon load on septic systems 1 or 2 times a week.  If the wrong systems are installed, arsenic can be dumped into the drinking water from the treatment system.  Other types of treatment can present arsenic disposal complications when the systems need to be removed