DCI Laboratory

At a glance

What it is certified to test

3 of the 9 common well tests on the WA 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

no (state list)

Lab facts

Listed by

Washington (Washington State Department of Ecology - Lab Accreditation Program (with WA DOH))

Address

2917 Foster Creighton Drive, Nashville, TN 37204 · Open in Google Maps

County

Davidson

Phone

(615) 255-5227

Public / homeowner samples

Not marked as taking public samples

Not marked 'Accepts Commercial/Public Samples' in WA Ecology Lab Search (checked 2026-11-01)

Location note

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

Left blank on the list

The Washington list (version Information current as of 11/13/2026) gives no website for this lab.

Certification record

Certificate ID

EPA TN00900

Issued by

Washington State Department of Ecology - Lab Accreditation Program (with WA DOH) (certification program)

Expiry on the list

10/22/2027 · expires in 341 days

List version

WA Ecology - Environmental Laboratories Accredited for Drinking Water Analyses (with scopes), version Information current as of 11/13/2026

We fetched it

15 Nov 2026 (file SHA-256 e7c9dab549d5…) · 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*').

21 drinking-water analytes on the WA scope (General Chemistry).

What changed on the latest list

• Added to the Washington list: not on the version we held on 7 Nov 2026.

Compared 7 Nov 2026 with 15 Nov 2026.

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: Davidson County, TN

• Private wells: about 2,040 people, 0% of Davidson County’s 678,889 residents (USGS, 2015); rank 63 of 95 counties in Tennessee by people on wells.

• 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 2 private-well users (95% range 1 to 2; 2010 base), rank 78 of 95 in the state. A screening estimate, not a measurement of any well.
• Older homes (Census ACS 2020–2024): 41% of 357,113 housing units were built before 1980, about the same as the state share of 41%. 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): 7 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 Washington 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).