Water testing in Illinois

Will County Health Department Environmental Health Laboratory Well Water Testing

$20

• Bacteria
• Nitrate
• Fluoride
• Hardness
• Chlorine

Pick up a sterile sample bottle at any Will County Health Department location, collect the water sample on ice, and bring it to the Environmental Health Laboratory in Joliet for testing.

Private well owners in Will County, Illinois

• Environmental Health Laboratory, 501 Ella Avenue, Joliet · (815) 727-8517

Checked October 1, 2026. Report a change

DuPage County Health Department Environmental Water Lab

$33

• Bacteria
• E. coli
• Nitrate
• Hardness
• pH

Stop by one of the four Public Health Centers (Addison, Lombard, Westmont, or Wheaton) to pick up water well testing supplies and instructions, collect the sample in the morning, and drop it off at the nearest center before 12:00 PM the same day (not accepted Friday through Sunday).

Private well owners in DuPage County; Kane County Health Department also refers its well-water testing kit customers to this lab

• Central Public Health Center, 111 N County Farm Road, Wheaton · 630-221-7593
• East Public Health Center, 1111 E Jackson Street, Lombard · 630-221-7593
• North Public Health Center, 1111 W Lake Street, Addison · 630-221-7593
• Southeast Public Health Center, 422 N Cass Avenue, Westmont · 630-221-7593

Checked October 1, 2026. Report a change

Kane County Health Department Water Bottle Testing Kit (Coliform and E. coli)

Call for price

• Bacteria
• E. coli

Pick up a free water bottle testing kit for coliform and E. coli at the Kane County Health Department's Aurora or Elgin office during office hours, then deliver the sample to DuPage County Health Department's Environmental Water Lab in Wheaton within 30 hours for lab analysis and fees.

Private well owners in Kane County, Illinois

• Kane County Health Department, Aurora, 1240 N. Highland Ave., Aurora · 630-208-3801
• Kane County Health Department, Elgin, 2170 Point Blvd., Elgin · 630-208-3801

Checked October 1, 2026. Report a change

Chicago Department of Water Management Free Lead Water Test

Free

• Lead

Request a free lead test kit online, collect the water samples following the included instructions, then schedule a free pickup by city representatives.

Any Chicago resident concerned about lead in their home's water

Checked October 1, 2026. Report a change