Well water testing in Lake County, Indiana

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

The official Indiana list shows 4 certified labs in Lake 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 Lake County

Crown Point Public Water Supply

1321 Merrillville Road
Crown Point, IN 46307

Call 219-662-3255

Coliform bacteria

IDOH certified for drinking water: total coliform/E.coli. Lab ID M-45-01. Call to confirm it accepts private well samples, and ask about price and turnaround.

DonLevy Laboratories

11165 Delaware Pkwy
Crown Point, IN 46307

Call 219-226-0001 · Website

Coliform bacteria

IDOH certified for drinking water: total coliform/E.coli, Heterotrophic plate count. Lab ID M-45-10. Call to confirm it accepts private well samples, and ask about price and turnaround.

East Chicago Water Department

400 E Chicago Avenue
East Chicago, IN 46312

Call 219-391-8487

Coliform bacteria

IDOH certified for drinking water: total coliform/E.coli. Lab ID M-45-02. Call to confirm it accepts private well samples, and ask about price and turnaround.

Microbac Laboratories, Inc.

250 West 84th Drive
Merrillville, IN 46410

Call 219-769-8378 · Website

Coliform bacteria
Chemistry

IDOH certified for drinking water: total coliform/E.coli, Enumeration of E. coli, Heterotrophic plate count, fluoride, nitrate, nitrite, cyanide, TTHMs. Lab ID M-45-08 C-45-03. 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 Lake 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 Lake 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 Lake County, IN?

The official Indiana certified lab list shows 4 labs in Lake 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 · Jefferson County · Kosciusko County · LaPorte County · Marion County · Montgomery County · Morgan County · Owen County · Porter County · St. Joseph County · Sullivan County · Vanderburgh County · Wayne County · Wells County · White County