ACZ Laboratories, Inc.

At a glance

What it is certified to test

5 of the 9 common well tests on the TX 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 (Washington list)

Lab facts

Listed by

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

Address

2773 Downhill Drive, Steamboat Springs, CO 80487-5051 · Open in Google Maps

Phone

(970) 879-6590 ext 584

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 website for this lab.

Certification record

Certificate ID

TX Lab ID T104704258

Issued by

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

Expiry on the list

4/30/2027 · expires in 166 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 34 drinking-water analytes this lab is accredited for. TCEQ database: lab type Commercial; 'Commercial?' Yes; 'Is Primary?' No.

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.

• Washington · EPA CO00028 / WA DOH #257 · Nitrate, Arsenic, Lead, Uranium, Manganese, Other metals · Public samples: yes (per state)
  WA Ecology - Environmental Laboratories Accredited for Drinking Water Analyses (with scopes) (Information current as of 11/13/2026)
• Michigan · 9967 · Uranium · Public samples: ask the lab
  EGLE - Certified Radiological Laboratories (9/8/2025 (radiological list))
• Colorado · CO Lab Cert ID CO00028 · Nitrate, Arsenic, Lead, Uranium, Other metals · Public samples: yes (per state)
  CDPHE Drinking Water Lab Certifications (Looker Studio report on cdphe.colorado.gov/dwlabs) (Live report, no edit date shown; data read by the report at 2026-11-02 20:39 UTC (Looker Studio dataTimestamp))
• Arizona · AZ0102 · Nitrate, Arsenic, Lead, Uranium, Radon (water), Manganese, Other metals · Public samples: ask the lab
  ADHS Safe Drinking Water Commercial Lab List (List of Arizona Certified Commercial Drinking Water Laboratories) (current as of Saturday, November 7, 2026)
• Oregon · CO200002 · Nitrate, Arsenic, Lead, Uranium, 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))
• New Mexico · CO00028 · Lead, Other metals · Public samples: ask the lab
  Laboratories Certified by NMED-DWB to Analyze Drinking Water Samples for Water Systems in New Mexico (Last Updated: 10/26/2026)
• Idaho · CO00028 · Nitrate, Arsenic, Lead, Uranium, Other metals · Public samples: ask the lab
  Idaho DHW - Drinking Water Lab Certification (WebLink folder 2940): State of Idaho Drinking Water Certificates (ACZ Laboratories Steamboat Springs, CO Inorganics Certificate: 10/1/2026 - 9/30/2027; ACZ Laboratories Steamboat Springs, CO Radiochemical Certificate: 10/1/2026 - 9/30/2027)

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).