At a glance
- What it is certified to test
- 1 of the 9 common well tests on the MT 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
- not stated: ask the lab
Lab facts
- Listed by
- Montana (Montana Department of Public Health and Human Services (DPHHS) - Laboratory Services, Water Laboratory Certification Program)
- Address
- 1673 Terra Avenue, Sheridan, WY 82801 · Open in Google Maps
- Phone
- (307) 672-8945
- Certificate
- The Montana DPHHS Water Laboratory Certification Program - Certified Laboratories (version page as fetched 2026-11-15 (no date printed)) prints no certificate ID or expiry date for this lab.
- Public / homeowner samples
- Public samples: ask the labNot stated in the list.
- Location note
- Lab is in WY, certified by Montana (often used as a mail-in lab).
- Left blank on the list
- The Montana list (version page as fetched 2026-11-15 (no date printed)) gives no website for this lab.
Tests on the state list
| Contaminant | On this state list | Same lab, other state lists |
|---|---|---|
| Coliform / E. coli | Group-level certification | Wyoming |
| Nitrate | Not named on this list | Idaho, Wyoming |
| Arsenic | Not named on this list | Idaho |
| Lead | Not named on this list | Idaho, Wyoming |
| PFAS | Not named on this list | |
| Uranium | Not named on this list | Idaho, Wyoming |
| Radon (water) | Not named on this list | |
| Manganese | Not named on this list | |
| VOCs | Not named on this list |
Groups as written on the state list (2)
- Chemistry - Inorganic and Organic
- Microbiology
- 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*').
DPHHS lists this lab under: Chemistry - Inorganic and Organic (Out-of-State Laboratories); Microbiology (Out-of-State Laboratories). The page names no analytes, certificate number or expiry date. Microbiology: the program page says DPHHS certifies labs that analyze Montana's public drinking water supplies for "chemical and microbiological contaminants" under the Safe Drinking Water Act, where the microbiological drinking-water tests are total coliform / E. coli; the page names no organism or method, so bacteria is shown as a certified group, not a named test. Ask the lab which coliform test it runs. "Chemistry - Inorganic and Organic" names no analyte, so no nitrate, metals or VOC certification is shown. Ask the lab.
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.
- Wyoming · no ID on list · Coliform / E. coli, Nitrate, Lead, Uranium, Other metals · Public samples: ask the labEPA Region 8 Certified Drinking Water Laboratories in Wyoming (Current as of February 2026 (page footer 2/17/2026))
- South Dakota · no ID on list · analytes not broken down · Public samples: ask the labLaboratories certified for the analysis of drinking water in the state of South Dakota (undated (the page shows only 'Copyright © 2026'))
- Idaho · WY00005 · Nitrate, Arsenic, Lead, Uranium, Other metals · Public samples: ask the labIdaho DHW - Drinking Water Lab Certification (WebLink folder 2940): State of Idaho Drinking Water Certificates (Pace Analytical Services Sheridan, WY Inorganics Certificate: 7/1/2026 - 6/30/2027)
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 Montana 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).
Montana DPHHS Water Laboratory Certification Program - Certified Laboratories. Fetched 2026-11-15 (UTC). File SHA-256 81a2798702cb…
Open the official source list