Search any facility in MPCA's Groundwater Contamination Atlas and see what
its monitoring wells measured, next to the Minnesota Department of Health's published health
values. Results are fetched live from MPCA's server — not from this site's database
— and every query links to MPCA's raw response.
What this adds. MPCA already publishes these results. Its
Groundwater Contamination Atlas lists the sites, and the underlying monitoring reports
are available as PDFs. Reading a single site's numbers means opening those documents; there
is no straightforward way to compare one site against another, or to see a result next to
the health value it is measured against. This page pulls the same figures from MPCA's data
layer, shows them beside MDH's published values, and links to the raw response so anything
here can be checked against MPCA directly.
How to read this
Each well shows the measured concentration MPCA reported, then how many times that is
above MDH's published values. MDH publishes more than one value per compound; both are
shown where they exist.
What these numbers are not. These are groundwater monitoring wells inside
facility boundaries. They are not drinking water, and they are not measurements of any lake
or river. MDH's cancer-based value is a drinking-water benchmark representing a small
additional lifetime cancer risk for someone drinking that water daily for a lifetime. A
well exceeding it is a statement about contamination at that site — not about anyone's
health risk.
Check it yourself
This page calls MPCA's public endpoint. You can call it too: