Private Well Owners: Important Information, please read below. Residents on Public Water Supply: This information does not apply to you.

Private Well Owners: 

Labs provide different services. Some may be able to arrange testing for both arsenic and uranium. Other labs may not accept samples from the public. Check with the lab before sending samples.

Important Notes on Arsenic: 

Inorganic arsenic occurs naturally as arsenic 3 & arsenic 5. Arsenic 3 is significantly more difficult to remove from water than arsenic 5. Therefore, if the total arsenic concentration in your well water exceeds the drinking water standard, you should consider having a sample tested for arsenic speciation in order to select a treatment option that removes a sufficient amount of arsenic to produce finished water that meets the standard.

For the laboratories listed above that have indicated that they offer arsenic speciation testing services, some offer field filtration kits for the homeowner to use to isolate the arsenic 3 sample. Those that don't offer field filtration kits complete the filtration process in the laboratory.

Field filtration is preferable, especially if the water sample contains a significant concentration of iron. However, laboratory-filtered samples are also a useful method for determining arsenic speciation.

If you have the laboratory run the sample filtration, you should discuss with them the optimum day (or days) of the week that you should collect and deliver the sample bottle, in order to minimize the time that elapses between sample collection and sample filtration.

Lab Services: Many laboratories will offer analytical services for analytes other than those for which they are certified by sub-contracting to other certified labs.  Laboratories will typically provide sample bottles to their customers with instructions on how to collect samples and many also offer the option (at additional cost) of sending a technician to your home to collect the samples.  Check with the lab before sending samples.

Lab Certification Status: To verify the current certification status of any of the laboratories listed in these tables, use the Find MassDEP-Certified Laboratories online search tool, enter the analyte you wish to test for (i.e. arsenic, gross alpha, radium, or uranium),  select  "Potable (Drinking Water)" and click Search.

Lab Services: 

Many laboratories will offer analytical services for analytes other than those for which they are certified by sub-contracting to other certified labs.  Laboratories will typically provide sample bottles to their customers with instructions on how to collect samples and many also offer the option (at additional cost) of sending a technician to your home to collect the samples.  Check with the lab before sending samples.

Lab Certification Status: 

To verify the current certification status of any of the laboratories listed in these tables, use the Find MassDEP-Certified Laboratories online search tool, enter the analyte you wish to test for (i.e. arsenic, gross alpha, radium, or uranium),  select  "Potable (Drinking Water)" and click Search.

 

Certified Laboratories for Testing Arsenic and Uranium xls format of Certified Laboratories for Testing Arsenic & Uranium