Last verified October 27, 2026 against the official state list (October 2026 starter list).
Pennsylvania has more people on private wells than any other state. This page starts with DEP-accredited labs that publicly accept residential drinking-water samples, plus links to the official DEP accredited-laboratory lists so you can find every certified option near you.
About 3.5 million Pennsylvanians drink from private wells (Penn State Extension / USGS). A 2025 Penn State study found PFAS in 65% of 167 sampled private wells, with 18% above EPA health limits — highest in the southeast.
Berks Centre Dauphin Lancaster
1037F MacArthur Road
Reading, PA 19605
PADEP Chapter 252 / NELAP. In-house PFAS (EPA 533, 537.1, 1633). Call to confirm private-well sample acceptance and pricing.
720 Tower Rd
University Park, PA 16802
DEP-accredited. Kits available through many county Extension offices. Email [email protected].
4359 Linglestown Road
Harrisburg, PA 17112
PA DEP certified environmental lab. Ask whether they accept private well owner samples before you collect.
Appears on multiple state certified lists for PFAS and drinking-water work. Confirm private-well drop-off or mail-in before sampling.
“(subcontracted)” means: May be subcontracted — call to confirm. Manganese is left off where the state list shows no mark.
Tell us what's going on with your well water. With your consent, up to 2 local treatment providers may contact you. We do not sell your info to mailing lists.
About 3.5 million people, or roughly 27% of the state, rely on private wells according to Penn State Extension and USGS self-supplied domestic estimates — the largest private-well population of any U.S. state.
If you live near developed land, industrial sites, airports, or military facilities — especially in southeastern PA — PFAS testing is worth discussing with a DEP-accredited lab. A 2025 Penn State study found PFAS in 65% of sampled private wells. PFAS tests typically cost $250–$500 per sample.
Use the PA DEP accredited laboratory PDF linked on this page under Sources. Our starter list highlights labs that publish residential drinking-water services; the DEP list is the complete official roster.
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