Approximately 20 percent of private wells in Massachusetts produce water that exhibit unhealthy levels of naturally occurring arsenic in drinking water. Importantly, well inspection and testing well water is the best way to make sure that your water is clean and safe to drink.
Arsenic in drinking water may occur naturally and is a tasteless, odorless and colorless contaminant. Additionally, there are other activities that could also have left residuals. These include apple orchard spraying, coal ash disposal, and use of some pressure treated wood. While there are serious health threats associated with ingestion, there are effective methods for removing arsenic in drinking water. For detail on potential health affects, see the link at: who.int/mediacentre/factsheets.
The two primary forms in well water are Arsenic III and Arsenic V. Many Arsenic removal media have a low capacity for removing AS III from the water. Therefore, converting it to AS V for removal is a common approach. Additionally, determining the ratio of AS III versus AS V in the water is critical. This will allow the design and implementation of a water treatment system that will effectively remove it from your drinking water. Notably, there are methods to oxidize the AS III and convert it to AS V for ease of removal.

Point of Entry Arsenic in Water Removal
WATER TESTING & ANALYSIS
Having a complete laboratory water test and analysis, including parameters that can negatively impact arsenic removal media, is critical. Subsequently, a safe water treatment system can be designed to remove arsenic from well water. Also, pH can significantly affect media performance. In addition, other competing ions can affect performance. These include Iron, Manganese, Hardness, Vanadium, Sulf