What am I looking at?

What do the "Acceptable Limit" numbers mean?

Both the State of Maine and the US Environmental Protection Agency publish standards for acceptable amounts of trace impurities in drinking water for public water systems.  These are the legal benchmarks that public water systems MUST hit, and by extension, private well water owners SHOULD TRY to hit.  Maine's limits have historically been identical-to or a-little-tougher-than the federal standards. Not every pollutant has an established health exposure standard.  The State of Maine and Federal Maximum Exposure Guidelines documents are available at the right.

Your MEL drinking water lab results will list the federal or Maine health standard, whichever is tougher, next to your results for comparison purposes.

Additional Resources for Interpreting Your Results

New Hampshire "Be Well Informed" Test Results Interpreter Website: This cool online form lets you input your water test results, and returns information and suggestions for treatment for each test parameter:
https://www4.des.state.nh.us/DWITool/Welcome.aspx

Ohio Watersheds Network of Ohio State University Water Interpretation Tool - Does the same thing as the NH tool, above.
https://ohiowatersheds.osu.edu/know-your-well-water/well-water-interpretation-tool

Video: Maine CDC, "Understanding Your Well Water Test Results" (3:24)
https://www.youtube.com/watch?v=2vBfrFQo1vw