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

Reports & Fact Sheets

A summary of results and links to the full text of the USGS report on arsenic & uranium in private wells, with related fact sheets. A summary of results and links to the full text of the USGS report on arsenic & uranium in private wells, with related fact sheets.

Location Lookup for Arsenic and Uranium Probability Zones

Maps with arsenic and uranium probability data for cities and towns in the USGS study area, and other towns with increased probability for uranium.

FAQs: Arsenic & Uranium

Answers to common questions on the USGS report, health concerns, testing & treatment for private wells & contact information.

Find a Testing Lab

Laboratories certified by MassDEP for the testing of drinking water from private wells for arsenic, uranium and other contaminants.

Resources for Private Well Owners: Arsenic & Uranium in Bedrock Private Wells in Massachusetts

A listing of MassDEP and other state and federal resources available from this site for owners of private drinking water wells.