Well water testing in Jefferson County, Indiana

Labs copied from the official Indiana certified lab list (last verified 2026-10-29). All Indiana labs

The official Indiana list shows 1 certified lab in Jefferson County. Call before you sample to confirm the lab accepts private well water and to ask about bottles, prices and drop-off times.

Certified labs in Jefferson County

Environmental Laboratories, Inc.- Madison

635 Green Road
Madison, IN 47250

Call 1-888-932-6699 · Website

Coliform bacteria
Chemistry

IDOH certified for drinking water: total coliform/E.coli, Heterotrophic plate count, antimony, arsenic, barium, beryllium, cadmium, chromium, copper, lead, nickel, selenium, thallium, mercury, fluoride, nitrate, nitrite, cyanide, Herbicides, TTHMs, The regulated VOCs & vinyl chloride, HAA5s, Pesticides, Miscellaneous SOCs. Lab ID M-39-01 C-39-01. Call to confirm it accepts private well samples, and ask about price and turnaround.

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What to test for

Every year, test for total coliform bacteria, nitrate, total dissolved solids and pH, as EPA recommends for private wells. Source
Nitrate: USGS finds higher nitrate in shallow groundwater under farmland. Parts of Indiana are intensively farmed, so test nitrate every year, and before using the water for infant formula. Source
Arsenic: USGS maps show naturally occurring arsenic in groundwater in parts of Indiana and its region. Test at least once, then as your lab or health department advises. Source
PFAS: test if you live near an airport, military base, landfill, or industrial or firefighting-foam site. EPA explains private well PFAS testing. Source
After flooding, test for bacteria before drinking the water again, as EPA advises. Source

After a flood in Jefferson County

EPA says to test a private well for bacteria after flooding before drinking the water again. Check current flood alerts and Flood Watch, and read flood season testing. EPA: your well after a flood

Local help

Your Jefferson County or local health department can tell you about local well testing, including any free or low-cost programs. State contact: Indiana Department of Health Laboratories (lab certification).

Questions

Where can I test well water in Jefferson County, IN?

The official Indiana certified lab list shows 1 lab in Jefferson County; they are listed on this page with phone numbers. Call first to confirm they accept private well samples.

How often should I test my well?

EPA recommends testing every year for total coliform bacteria, nitrates, total dissolved solids and pH, and testing right away after flooding, well repairs, or a change in taste, color or smell.

Other Indiana counties

Allen County · Bartholomew County · Benton County · Cass County · Clark County · Clinton County · DeKalb County · Delaware County · Dubois County · Elkhart County · Grant County · Hamilton County · Hancock County · Hendricks County · Howard County · Jasper County · Kosciusko County · LaPorte County · Lake County · Marion County · Montgomery County · Morgan County · Owen County · Porter County · St. Joseph County · Sullivan County · Vanderburgh County · Wayne County · Wells County · White County