Rye, NH

Arsenic in Well Water Removal


Arsenic in well water may occur naturally and is a tasteless, odorless and colorless contaminant. Some activities that could also have left arsenic residuals include apple orchard spraying, coal ash disposal, and use of some pressure treated wood. Rye, NH homeowners can be very surprised when they get their laboratory water test results back and see they have arsenic in their water.  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: http://www.who.mediacentre/factsheets

remove arsenic from drinking water Rye, NH   The two primary forms of Arsenic in well water are Arsenic III and Arsenic V.  Many 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. Therefore, 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. There are methods to oxidize the As III and convert it to As V for ease of removal.

twin arsenic ozone filter Rye, NH

Twin Arsenic system with Ozone


Water testing for Arsenic in drinking water Rye, NH

Having a complete laboratory water test and analysis, including parameters that can negatively impact arsenic removal media, is critical to a well designed, safe water treatment system that will remove arsenic in well water.  pH can significantly affect Arsenic media performance along with other competing ions such as Iron, Manganese, Hardness, Vanadium, Sulfate, Phosphate, Silica, Total Dissolved Solids, Suspended Solids and Hydrogen Sulfide.  For a full article on this topic which we’ve had published in Water Technology Magazine, go to our publications section and click on the Arsenic removal article at https://h2ocare.com/publications/


arsenic in drinking water monitoring Rye, NH

Determining water usage is also critical to designing an effective arsenic in water removal system that will have the proper capacity.  Key information would include well pump size, well pump flow rate, size of the incoming water line, number of residents in the home, the number of bathrooms, space availability for equipment installation, electrical availability and water discharge location or restrictions, among others.


A couple of key components for consideration when designing this type of system include:

  1.  Utilizing a meter to track flow rate and total gallons processed is critical to determine the home’s water demand.
  2.  Gallons used readings also assist in uncovering any potential leaks in the home such as running toilets, which will unnecessarily prematurely deplete the media’s capacity.


Because Arsenic in well water is a tasteless, colorless and odorless contaminant, it is particularly important to have two tanks in series in case the first tank is depleted  prior to scheduled service with your water treatment company.  Service should be scheduled at intervals determined by the water use tracking data accumulated. This, combined with appropriate water testing intervals are added safeguards.

In summary, finding Arsenic in well water may first come as a shock, however , if you are contemplating buying a home that has it,  a safe, effective system can be installed to eliminate this problem.

arsenic in well water Rye, nhArsenic in drinking water Rye, NH

H2O Care is an established regional water testing & filtration company formed in 1989 with over 9,000 installed water filtration systems in New England. The company has been published multiple times in Water Technology Magazines, see link at www.h2ocare.com. Contact us at service@h2ocare.com or call 800-539-1100.