McHenry County Department of Health offers reduced fee water testing in April

WOODSTOCK – In recognition of Public Health Week (April 6-12), McHenry County Department of Health will offer reduced fee water testing for individual well water users from April 1-30. Residents can have their well water sampled for coliform bacteria and nitrate for $18.

Testing your well regularly is the only way to determine whether the well water is safe to drink as many contaminants are colorless and odorless.  Water from a public or municipal water system is regularly tested for contaminants regulated by federal and state standards.  

County health officials said bacteria and chemicals can get into well water and contaminate it in different ways. Some bacteria and chemicals occur naturally.  

Contaminants such as nitrate can come from animal waste, wastewater, flooded sewers, polluted storm water runoff, fertilizers, agricultural runoff, or decaying plants. High levels of nitrate in drinking water can cause illness in young children and pregnant women. Coliform bacteria are microbes found in the digestive systems of warm-blooded animals, in soil, on plants, and in surface water. 

Sterile sample containers from the department are required and are available at the locations below. Samples can be dropped off for testing on Tuesday mornings between 9:00 a.m. and noon.   

• Algonquin Township Office, 3702 Route 14, Crystal Lake 847-639-2329

• Dorr Township Office, 1039 Lake Street, Woodstock 815-338-0125

• McHenry County Dept of Health, 2200 N Seminary Ave, Woodstock 815-334-4585

• McHenry County Dept of Health, 100 N Virginia St, Crystal Lake 815-459-5151

• McHenry Township Office, 3703 Richmond Road, McHenry 815-385-5605

• Nunda Township Office, 3510 Bay Road, Crystal Lake 815-459-4011

• City of Marengo, City Hall, 134 E. Prairie Street, Marengo 815-568-7112

• Harvard Police Department, 201 W Front Street, Harvard 815-943-4431

• Richmond Township Office, 7812 South Route 31, Richmond 815-678-0077

• Grafton Township Office, 10109 Vine Street, Huntley 847-669-3328

For more information, contact MCDH’s Environmental Health Division at 815-334-4585 or visit

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