White Oak Laboratory LLC

At a glance

What it is certified to test

2 of the 9 common well tests on the PA list (see which)

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

yes (lab’s own website, read 14 Nov 2026)

Lab facts

Listed by

Pennsylvania (Pennsylvania DEP - Laboratory Accreditation Program)

Address

2997 Ridgway Johnsonburg Road, Ridgway, PA 15853 · Open in Google Maps

Phone

(814) 772-5927

Website

whiteoaklaboratory.com

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

Public / homeowner samples

Homeowner samples: yes (lab’s website)

PA DEP accreditation report has no homeowner-sample flag

Certification record

Certificate ID

PA DEP 24-05897

Issued by

Pennsylvania DEP - Laboratory Accreditation Program (certification program)

List version

PA DEP Accredited Labs Report - Drinking Water (chemistry + microbiology), version STALE - report dated 6/11/2024

We fetched it

29 Oct 2026 (file SHA-256 415f95aac8bd…) · 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*').

STALE LIST: PA DEP bulk Accredited Labs Report(s) dated 6/11/2024. The live PA DEP lab search was unreachable on 2026-10-29 (HTTP 500 / TLS error). Confirm current accreditation with PA DEP or the lab.

Homeowner service and turnaround (lab’s own website)

• Takes homeowner samples: yes. The lab’s site says: “Whether you are a homeowner or municipality, a team member of White Oak Laboratory can take your sample for you” source
• Who collects: You collect it, or lab staff can. source
• Prices: no price printed on the lab’s website when we read it on 14 Nov 2026: ask for a quote.

From the lab’s own website, read 14 Nov 2026 and re-read by a second checker; next check due by 12 Feb 2027. Certification fields come from the state list only.

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: Elk County, PA

• Private wells: about 4,392 people, 14% of Elk County’s 30,872 residents (USGS, 2015); rank 65 of 67 counties in Pennsylvania by people on wells.

• EPA radon zone (indoor air): Zone 2: moderate potential (average indoor radon may be between 2 and 4 pCi/L). EPA says the zone map should not decide whether one home needs testing.
• Arsenic above 10 µg/L (USGS model): about 107 private-well users (95% range 61 to 190; 2010 base), rank 65 of 67 in the state. A screening estimate, not a measurement of any well.
• Older homes (Census ACS 2020–2024): 74% of 16,880 housing units were built before 1980, above the state share of 67%. 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; 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 Pennsylvania 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).