State-certified labTakes homeowner samples

Key Laboratory Services

Monticello, IL · Piatt CountyCommercial laboratory

Call (217) 875-2691
Directions
Certification
State certified
list checked September 30, 2026
Certificate
17583
Illinois program
Tests listed
1
Coliform Bacteria
Homeowner samples
Yes
Drop-off

About Key Laboratory Services

Key Laboratory Services is a commercial laboratory in Monticello, IL (Piatt County). It is on the Illinois drinking water program's list of certified laboratories (certificate 17583), 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 17583; certified list revised December 4, 2025). Certified for bacteria (total coliform and E. coli) only; pair with an IL ELAP accredited chemistry lab for nitrate, arsenic and metals.

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.

Certification and services

State certified
Certification number
17583
Certified by
Illinois drinking water program
Certified for
Microbiology
Lab type
Commercial
Last verified
September 30, 2026

Listed on the official state certified laboratory list.

How to test your water here

How this lab takes samples, based on its listing. Call to confirm hours, bottles and prices.

Homeowner samplesYou can collect and drop off your own sample
Mail-in kitsNot listed, call to confirm
Walk-in drop offNot listed, call to confirm

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.

  1. 1

    Call for the right bottles

    Bacteria samples need a sterile bottle from the lab. Chemistry samples usually take a clean container the lab supplies.

  2. 2

    Collect from a cold tap before treatment

    Skip softeners and filters. Remove the aerator, run the water 3 to 5 minutes, then fill without touching the inside of the cap.

  3. 3

    Keep it cold and deliver within 24 hours

    Bacteria samples are time-sensitive. Use a cooler with ice packs and hand it in or ship it the same day.

  4. 4

    Read the report against the standards

    Compare results with EPA drinking water limits. If anything is over, our problem pages explain what it means and how to treat it.

Tests this lab is listed for

From the state certification list and the lab's own listing. Ask which ones it runs for homeowners.

Coliform Bacteria

Total coliform and E. coli. The test the CDC recommends every year for every private well. Learn more

Location

453 West Monroe Street, Monticello, IL 61856

Lab address

Questions about Key Laboratory Services

Is Key Laboratory Services state certified?

Yes. It is on the Illinois list of laboratories certified for drinking water testing, last checked September 30, 2026.

What can Key Laboratory Services test well water for?

Its listing covers coliform bacteria. Call to confirm prices and which tests it runs for private well owners.

Can I bring my own well water sample?

Yes, the listing says it takes homeowner samples. Get the right bottle from the lab first, especially for bacteria.

How do I contact Key Laboratory Services?

Call (217) 875-2691. The address is 453 West Monroe Street, Monticello, IL 61856.

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