WESTON & SAMPSON SERVICES INC

At a glance

Price

no per-test price printed on the lab’s website when we read it (14 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

South Carolina (South Carolina Department of Environmental Services (SCDES) - Bureau of Regional Laboratory Services, Office of Environmental Laboratory Certification)

Address

3955 FABER PL DR STE 300, North Charleston, SC 29405 · Open in Google Maps

Phone

(843) 693-6016

Website

www.westonandsampson.com

Not on the state list: found and checked by us, 14 Nov 2026

Public / homeowner samples

Public samples: ask the lab

Not stated per lab. SCDES's well-testing page tells well owners: "For Volatile Organic Chemicals, Herbicides, Pesticides, Other Synthetic Organic Parameters, please contact a Commercial Laboratory." It names no lab, and CELMAPP does not say which labs take samples from homeowners.

Certification record

Certificate ID

10594001

Issued by

South Carolina Department of Environmental Services (SCDES) - Bureau of Regional Laboratory Services, Office of Environmental Laboratory Certification (certification program)

List version

SCDES Commercial Environmental Laboratory Mapping (CELMAPP) - certified commercial laboratories, Safe Drinking Water, version no date printed; CELMAPP data last refreshed 2026-10-10 (LastRefreshDate of SCDES's details table)

We fetched it

3 Nov 2026 (file SHA-256 3c5b868223a8…) · open the state file

Tests on the state list

This list does not break certification down by analyte. Ask the lab which tests it is certified for; the groups as written on the list are below.

• 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*').

SCDES's CELMAPP lists this lab's Safe Drinking Water certification by parameter and method (SC certification permit 10594001). SCDES publishes no expiry dates and advises: "To request a list of certified labs for specific methods, parameters, and/or analytes, send an email to [email protected] or contact the laboratory directly to verify they have the necessary certification."

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: Charleston County, SC

• Private wells: about 62,252 people, 16% of Charleston County’s 389,262 residents (USGS, 2015); rank 6 of 46 counties in South Carolina by people on wells.

• 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 1,743 private-well users (95% range 1,150 to 2,640; 2010 base), rank 5 of 46 in the state. A screening estimate, not a measurement of any well.
• Older homes (Census ACS 2020–2024): 34% of 209,803 housing units were built before 1980, about the same as the state share of 33%. 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): 9 public systems serving this county reported EPA UCMR 5 results; 8 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 South Carolina 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).