EMSL Analytical Inc.-St. Louis

At a glance

What it is certified to test

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

Price

not published on the state list: ask the lab for a quote

Turnaround

not stated on the state list or the lab’s website: ask when you order

Homeowner samples

yes (California list)

Lab facts

Listed by

Missouri (Missouri Department of Natural Resources (chemical labs) + Department of Health and Senior Services (microbiological labs))

Address

100 Green Park Industrial Court, St. Louis, MO 63123 · Open in Google Maps

Phone

(314) 577-0150

Public / homeowner samples

Public samples: ask the lab

Not stated in the list.

Left blank on the list

The Missouri list (version Live export fetched 2026-11-15 (no list date printed in the file)) gives no website for this lab.

Certification record

Certificate ID

MO cert 165 (chemical + microbiological)

Issued by

Missouri Department of Natural Resources (chemical labs) + Department of Health and Senior Services (microbiological labs) (certification program)

Expiry on the list

5/31/2027 (chemical); 8/31/2029 (microbiological) · expires in 197 days

List version

Missouri DNR - Certified Chemical Laboratories (spreadsheet of all laboratories) + Missouri DNR - Certified Microbiological Laboratories (spreadsheet of all laboratories), version Live export fetched 2026-11-15 (no list date printed in the file)

We fetched it

15 Nov 2026 (file SHA-256 1807923f50eb…) · 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*').

14 certified drinking-water chemical parameters (analyte-level list). Microbiological certification is listed per lab only; the list does not name the tests. Confirm coliform / E. coli testing with the lab. MO marks the lab 'Commercial' (performs analyses for hire): chemical list Yes; microbiological list Yes.

Also certified by other states

Same business (same street address and ZIP) on another state's official list. Each state certifies separately, so each listing keeps its own source.

• California · CA ELAP 2668 · Nitrate, Arsenic, Lead, Manganese, Other metals · Public samples: yes (per state)
  California ELAP - Accredited Laboratories (map layer) + per-lab Fields of Accreditation (Map layer fetched 2026-11-15; scope PDF as of 2/27/2026)
• Oregon · 4194 · Coliform / E. coli, Nitrate, Arsenic, Lead, Manganese, Other metals · Public samples: yes (per state)
  ORELAP laboratory search (ODIE): accredited for the Drinking Water matrix (search as fetched 2026-11-15 (live database, no list date))

Nearest labs that take homeowner samples

3 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: St. Louis City, MO

• Private wells: about 0 people, 0% of St. Louis City’s 315,685 residents (USGS, 2015); rank 102 of 115 counties in Missouri 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.
• Older homes (Census ACS 2020–2024): 86% of 174,111 housing units were built before 1980, above the state share of 53%. 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): 3 public systems serving this county reported EPA UCMR 5 results; 0 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 Missouri 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).