Well water quality – hopkinton, massachusetts

Well Water Hopkinton, MA



The following discusses both private well water and town supplied water with regard to potential water quality issues or concerns and the possible need for a water filtration system or water softener.


The most common calls we get from Hopkinton residents with private well water inquiring about water filtration systems or water softeners is with regard to correcting low pH, which is corrosive to the home’s piping and other plumbing fixtures, as well as Iron, Manganese, Hard Water and High Total Dissolved Solids (TDS).  When water test results show low pH combined with High TDS, a properly designed water filtration system can become complicated.  In this case, a non-traditional approach may have to be taken to neutralize the low pH.  Hydrogen Sulfide is evidenced typically by a rotten egg smell in your water, however this may also be caused by high Manganese levels in the water as well.  A water filtration specifically for this problem is effective in correcting this.




As a home buyer or seller, there are always questions that come up regarding testing the water when a home is serviced by a private well. If you are buying, have bought or are selling a home that has its own well water in Hopkinton, you will need to make sure it is tested. Water testing should be conducted by an EPA or Massachusetts state certified laboratory and should include minimally, an analysis for the parameters in the table below. If you are uncertain as to what to have tested and how to take a proper sample and get it to a lab, you should contact a lab or water treatment professional for assistance. Typical items tested for are as follows, among others:

Coliform bacteria pH
Arsenic Radon
Chloride Sodium
Iron Sulfate
Lead Conductivity
Manganese Nitrogen-Nitrate

If the testing results for Radon exceed the current Massachusetts guideline of ten thousand (10,000) pCi/L in water, then the radon must be removed from the water and it is recommended that testing the air for Radon is performed as well.  It should be noted that New Hampshire requires action if radon is 2,000 pCi/L (pico curries per liter), Maine and Rhode Island are at 4,000 pCi/L, as is the EPA.  A water filtration system that will agitate and remove the radon gas by venting it outside will correct the radon in water issue. If the results for Arsenic come in at or above .01 parts per million, then a water filtration system for removing the Arsenic must be installed.

Water softener install

Water Softener with Sediment Filtration Installed in Basement


Water filtration systems can be installed for the removal of any of the contaminants listed in the above table and more. Water softeners are typically installed to remove iron or manganese in the water through a technology called Ion Exchange. Arsenic is removed with tanks containing a specific media that “grabs” the arsenic out of the water. Removing radon from water requires a systems that isn’t dissimilar to a washing machine where the water is agitated, but then vented to the outside, sending the radon gas outside the home to ambient air. Other technologies and systems are used to remove the other contaminants. Any water filtration system designed should start with a water test before an informed recommendation can be made. To see a chart of common regional water problems, symptoms and solutions, go to the link at /common-water-problems/.


If you are on the town water supply, the following is a link to the report, which is made available every year: Annual Drinking Water Report.

water quality hopkinton, maWater filtration Hopkinton, MA

H2O Care is an established water testing & filtration organization, formed in 1989 with offices in Hudson (Rte. 62) & Middleton (Rte. 114), MA. Articles published by the Company can be seen in Water Technology Magazine or linked through the website publications section at http://h2ocare.wpengine.com. You can contact us at [email protected] or by calling us at 978-777-8330.



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