Envirosource Corp. dba Green Analytical Laboratories

At a glance

What it is certified to test

3 of the 9 common well tests on the TX list (see which)

Price

no per-test price printed on the lab’s website when we read it (15 Nov 2026): ask for a quote

Turnaround

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

Homeowner samples

not stated: ask the lab

Lab facts

Listed by

Texas (Texas Commission on Environmental Quality (TCEQ) - Laboratory Accreditation Program (NELAP))

Address

421 Turner Drive, Durango, CO 81303 · Open in Google Maps

Website

cardinallabsnm.com

Not on the state list: found and checked by us, 15 Nov 2026

Public / homeowner samples

Public samples: ask the lab

Not stated in the list.

Location note

Lab is in CO, certified by Texas (often used as a mail-in lab).

Left blank on the list

The Texas list (version Live database, searched 2026-11-15 ("accurate as of the date and time of the search")) gives no phone for this lab.

Certification record

Certificate ID

TX Lab ID T104704514

Issued by

Texas Commission on Environmental Quality (TCEQ) - Laboratory Accreditation Program (NELAP) (certification program)

Expiry on the list

1/31/2027 · expires in 77 days

List version

TCEQ Laboratory Approval Status - List of Accredited Laboratories (public database, Matrix: Drinking Water), version Live database, searched 2026-11-15 ("accurate as of the date and time of the search")

We fetched it

15 Nov 2026 (file SHA-256 d09853d6717d…) · 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*').

TCEQ lists 15 drinking-water analytes this lab is accredited for. TCEQ database: lab type Commercial; 'Commercial?' Yes; 'Is Primary?' Yes.

Nearest labs that take homeowner samples

1 other certified lab that takes homeowner samples is 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: La Plata County, CO

• Private wells: about 5,298 people, 10% of La Plata County’s 54,688 residents (USGS, 2015); rank 15 of 64 counties in Colorado by people on wells.
• At house sale: La Plata County Public Health Department has a septic system rule (La Plata County OWTS regulation, Continued Use Permit (section not cited in guide)). What it requires

• EPA radon zone (indoor air): Zone 1: highest potential (average indoor radon may be greater than 4 pCi/L). EPA says the zone map should not decide whether one home needs testing.
• Arsenic above 10 µg/L (USGS model): about 137 private-well users (95% range 110 to 176; 2010 base), rank 21 of 64 in the state. A screening estimate, not a measurement of any well.
• Older homes (Census ACS 2020–2024): 32% of 28,990 housing units were built before 1980, below the state share of 40%. 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): 1 public system 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 Texas 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).