McHenry County Health Department Laboratory
Homeowner samples
- Coliform Bacteria
Pace Analytical Services (McHenry) is a commercial laboratory in McHenry, IL (McHenry County). It is on the Illinois drinking water program's list of certified laboratories (certificate 17556), and we last checked the list on September 30, 2026.
The lab takes samples from homeowners.
Before you go: Certified by the Illinois Department of Public Health for drinking water microbiology (IDPH lab 17556; certified list revised December 4, 2025). Accredited by the Illinois EPA Environmental Laboratory Accreditation Program for chemical analysis of drinking water (IL ELAP lab code 100279; primary lab list of December 9, 2025). Runs both the bacteria test and the chemistry panel (nitrate, arsenic, lead, iron, manganese, hardness) that IDPH recommends for private wells; call for bottles, drop-off hours and pricing.
This profile is built from the official state list of certified drinking water laboratories, checked on September 30, 2026. Well Water Insider does not rate or endorse labs. Run this lab? Claim the profile to add prices, turnaround times, hours and a description.
Listed on the official state certified laboratory list.
How this lab takes samples, based on its listing. Call to confirm hours, bottles and prices.
Published lab fees in Illinois: $30 for a bacteria test that also covers nitrate. County health department lab: one $30 test covers coliform, E. coli and nitrate (McHenry County). Prices at this lab may differ.
Bacteria samples need a sterile bottle from the lab. Chemistry samples usually take a clean container the lab supplies.
Skip softeners and filters. Remove the aerator, run the water 3 to 5 minutes, then fill without touching the inside of the cap.
Bacteria samples are time-sensitive. Use a cooler with ice packs and hand it in or ship it the same day.
Compare results with EPA drinking water limits. If anything is over, our problem pages explain what it means and how to treat it.
From the state certification list and the lab's own listing. Ask which ones it runs for homeowners.
Natural in some bedrock, with no taste or smell. The EPA limit is 0.010 mg/L. Learn more
Total coliform and E. coli. The test the CDC recommends every year for every private well. Learn more
A broad package that usually covers bacteria, nitrate, metals and minerals. Learn more
Calcium and magnesium. You need this number to size a water softener. Learn more
The cause of orange and black stains. EPA guidelines are 0.3 and 0.05 mg/L. Learn more
Usually from plumbing and older well parts. EPA says there is no safe level. Learn more
From fertilizer, manure and septic systems. The EPA limit is 10 mg/L as nitrogen. Learn more
4314 West Crystal Lake Road, Suite A, McHenry, IL 60050
Lab address
Yes. It is on the Illinois list of laboratories certified for drinking water testing, last checked September 30, 2026.
Its listing covers arsenic, coliform bacteria, full homeowner panel, hardness, iron and manganese, lead and nitrate / nitrite. Call to confirm prices and which tests it runs for private well owners.
Yes, the listing says it takes homeowner samples. Get the right bottle from the lab first, especially for bacteria.
Call (815) 344-4044 and visit the lab's website. The address is 4314 West Crystal Lake Road, Suite A, McHenry, IL 60050.
Homeowner samples
Homeowner samples
Homeowner samples