First Environmental Laboratories, Inc.

At a glance

What it is certified to test

4 of the 9 common well tests on the IL list (see which)

Price

from $13 (Nitrate), as printed on the lab’s website, read 14 Nov 2026

Turnaround

“we will have results for you in approximately two weeks” (lab’s website)

Homeowner samples

yes (lab’s own website, read 14 Nov 2026)

Lab facts

Listed by

Illinois (Illinois EPA - Environmental Laboratory Accreditation Program (IL ELAP, chemistry) and Illinois Department of Public Health (IDPH, water microbiology))

Address

1600 Shore Road, Suite D, Naperville, IL 60563 · Open in Google Maps

Phone

(630) 778-1200

Website

www.firstenvlims.com

Not on the state list: found and checked by us, 14 Nov 2026

Public / homeowner samples

Homeowner samples: yes (lab’s website)

Not stated in the list.

Certification record

Certificate ID

IEPA 100292

Issued by

Illinois EPA - Environmental Laboratory Accreditation Program (IL ELAP, chemistry) and Illinois Department of Public Health (IDPH, water microbiology) (certification program)

Expiry on the list

2/28/2027 · expires in 105 days

List version

IEPA Accredited Laboratories (Primary Labs / Secondary Labs) - Laboratories Accredited for Chemical Analysis + TNI LAMS fields of accreditation (Drinking Water, accrediting body IL ELAP), version 12/09/2025 (date in the file name; the PDF prints no date); TNI LAMS as fetched 2026-11-15

We fetched it

15 Nov 2026 (file SHA-256 a9331e2f0302…) · open the state file

Tests on the state list

• Named on the official list The state list names this analyte (or a column for it) for this lab.
• Group-level certification Certified for a parent group (e.g. 'Inorganics') that includes this analyte. Confirm the specific test with the lab.
• Partial group certification The list marks the group as 'Partial'. Confirm this analyte with the lab.
• Subcontracted The lab sends this analyte to another accredited lab (MDH 'X*').

IEPA's chemistry list names no analytes; the 37 drinking-water analytes listed here are the lab's IL ELAP fields of accreditation in TNI LAMS (TNI02031), status Accredited. TNI LAMS records 'Commercial Samples: Yes' for this lab.

Homeowner service and turnaround (lab’s own website)

• Takes homeowner samples: yes. The lab’s site says: “FEL's customers include landfills, industrial facilities, municipalities, engineering firms, local/state/federal government, and the general public.” source
• Who collects: You collect the sample with the lab's bottles. source
• By mail or courier: the lab says samples or kits can be shipped. Bacteria samples must reach the lab within its holding time.
• Turnaround (as printed): we will have results for you in approximately two weeks source

From the lab’s own website, read 14 Nov 2026 and re-read by a second checker; next check due by 12 Feb 2027. Certification fields come from the state list only.

Prices the lab prints, compared

Nearest labs that take homeowner samples

2 other certified labs that take homeowner samples are within 25 miles of this lab. Distances are straight-line from the address on the state list (approx. = ZIP-code centre). “Takes homeowner samples” comes from a state list column or the lab’s own website, as named.

Price and turnaround as printed on each lab’s own website and checked by a second reader; – = not published or not read yet.

Around this lab: DuPage County, IL

• Private wells: about 72,636 people, 8% of DuPage County’s 933,736 residents (USGS, 2015); rank 3 of 102 counties in Illinois by people on wells.

• EPA radon zone (indoor air): Zone 2: moderate potential (average indoor radon may be between 2 and 4 pCi/L). EPA says the zone map should not decide whether one home needs testing.
• Arsenic above 10 µg/L (USGS model): about 1,104 private-well users (95% range 926 to 1,312; 2010 base), rank 18 of 102 in the state. A screening estimate, not a measurement of any well.
• Older homes (Census ACS 2020–2024): 53% of 367,152 housing units were built before 1980, below the state share of 63%. Homes built before 1986 are more likely to have lead solder or fittings, so test tap water for lead there.
• PFAS in public water nearby (public supply, not your well): 37 public systems serving this county reported EPA UCMR 5 results; 1 had a PFOA or PFOS sample at or above 4.0 ng/L.

County figures describe where the lab is, not the lab. Sources: USGS 2015 water use and 2017 arsenic estimates, EPA radon zones, Census ACS table B25034 (2020–2024), EPA UCMR 5 (2023–2026); details and links on the sources page.

Before you send a sample

Call the lab to confirm it's currently certified for the exact test and method, that it accepts samples from homeowners, and how to collect and ship them. Bacteria samples have short holding times. Status can change between list updates. To check a status, contact the Illinois certification program.

Is this your lab?

Labs can ask for corrections through the agency that publishes their state list. Homeowner service, prices and turnaround above come only from the lab’s own website. To ask us to correct or remove this listing, write to us (how we handle listings).