To remove arsenic from water, first determine the variety of arsenic in the water. Choose among several types of treatment systems, and then have a system installed and perform regular maintenance. You need a laboratory to conduct the appropriate testing and a professional water treatment company to install an overall treatment system. The process should take a few weeks.
- Determine the arsenic species
Two species of arsenic exist in water: arsenic 3 and arsenic 5. Arsenic 3 must be changed to arsenic 5 before it can be removed from water. Check with a laboratory to determine how much of each type of arsenic your water contains. If your water has arsenic 3, find a professional water treatment company to install a pre-oxidation system to convert the arsenic 3 before the water goes through a home filtering system.
- Choose a treatment type
Select either a treatment system that is connected to the kitchen tap or a whole-house system. In addition, choose among possible removal methods for arsenic: reverse osmosis, filters or anion exchange. Install the system you choose or have a professional do it.
- Perform regular maintenance
Consult the product manual that comes with your water treatment system for maintenance requirements. Change filters and conduct other maintenance tasks as the manual recommends or hire a professional to do it. Filters that are not changed at recommended intervals can make an arsenic problem worse.