RTI International

At a glance

What it is certified to test

3 of the 9 common well tests on the VA 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 (Colorado list)

Lab facts

Listed by

Virginia (Virginia Division of Consolidated Laboratory Services (DCLS))

Address

3040 E Cornwallis Road, Durham, NC 27713 · Open in Google Maps

Phone

(919) 485-5520

Public / homeowner samples

Public samples: ask the lab

VA DCLS export has no homeowner/commercial-sample flag

Location note

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

Left blank on the list

The Virginia list (version Current as of 8/1/2026) gives no website for this lab.

Certification record

Certificate ID

VA lab 460316 / EPA NC00116

Issued by

Virginia Division of Consolidated Laboratory Services (DCLS) (certification program)

Expiry on the list

9/30/2026 · Date on list has passed (46 days ago)

List version

Virginia DCLS - Drinking Water Certified Labs (analyte detail), version Current as of 8/1/2026

We fetched it

15 Nov 2026 (file SHA-256 ba2a9e4eac40…) · 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*').

15 certified drinking-water analytes across 1 methods (analyte-level list).

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.

• Florida · FL DOH E971162 · Arsenic, Lead, Manganese, Other metals · Public samples: ask the lab
  Florida DOH - Laboratories Certified Under NELAP (DEP Qlik app): Analyte Search + Organization Name and Location Search, Matrix = Drinking Water, Certification Status = Accredited, Active labs (DOH Version: 11/07/2026 08:30:01 (Qlik app refresh 11/9/2026 4:26:47 AM; live database))
• Nevada · NV Lab ID NC00116 · Arsenic, Lead, Manganese, Other metals · Public samples: ask the lab
  NDEP Laboratory Approval Status - Certified Lab List (public database, Matrix: Drinking Water) (Live database, searched 2026-11-15 ("accurate as of the date and time of the search"))
• Colorado · CO Lab Cert ID NC00116 · Arsenic, Lead, 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))

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: Durham County, NC

• Private wells: about 25,458 people, 8% of Durham County’s 300,952 residents (USGS, 2015); rank 33 of 100 counties in North Carolina by people on wells.
• County health department: Durham County Department of Public Health, Environmental Health (Onsite Water Protection) samples wells (read 14 Nov 2026).

• EPA radon zone (indoor air): Zone 3: low potential (average indoor radon may be less than 2 pCi/L). EPA says the zone map should not decide whether one home needs testing.
• Arsenic above 10 µg/L (USGS model): about 4,608 private-well users (95% range 2,621 to 8,112; 2010 base), rank 5 of 100 in the state. A screening estimate, not a measurement of any well.
• Older homes (Census ACS 2020–2024): 31% of 153,022 housing units were built before 1980, below the state share of 34%. 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; 2 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 Virginia 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).