privatewelldata / States / Pennsylvania
Pennsylvania well water testing
146 labs are listed on Pennsylvania’s official certified-lab list; 4% of 3,072 sampled wells were above the arsenic limit across 62 counties. Updated 2026-10-18.
Official lab list for Pennsylvania
Pennsylvania DEP – private well water testingPennsylvania's environmental agency explains well testing and links to its reports of labs accredited for drinking water.www.pa.gov · checked 2026-10-18Pennsylvania Department of Environmental ProtectionThis state agency certifies the labs that may test drinking water. Use its list to pick a certified lab for your well sample.cedatareporting.pa.gov · checked 2026-10-18 · link via EPA
Coverage map
Where the labs are
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Tests these labs are listed for
- Bacteria (coliform / E. coli): 96 of 146 labs
- Nitrate / nitrite: 58 of 146 labs
- Metals: 56 of 146 labs
- Lead: 51 of 146 labs
- Arsenic: 43 of 146 labs
- Organic chemicals / pesticides: 40 of 146 labs
- PFAS: 24 of 146 labs
- Radioactivity: 10 of 146 labs
Counted from the tests each lab is certified for on the official list. A lab may offer more; ask before you send a sample.
Well water results by county
| County | Arsenic > 10 µg/L | Nitrate > 10 mg/L |
|---|---|---|
| Adams County | 3% of 32 | 7% of 98 |
| Allegheny County | 10% of 10 | 0% of 35 |
| Beaver County | – | 0% of 16 |
| Bedford County | 4% of 25 | 6% of 83 |
| Berks County | 7% of 71 | 8% of 191 |
| Blair County | 13% of 24 | 23% of 73 |
| Bradford County | 7% of 189 | 1% of 213 |
| Bucks County | 7% of 97 | 2% of 244 |
| Butler County | – | 0% of 17 |
| Cambria County | 0% of 14 | 0% of 28 |
| Cameron County | – | 0% of 16 |
| Centre County | 4% of 56 | 3% of 77 |
| Chester County | 0% of 452 | 10% of 858 |
| Clarion County | 23% of 35 | 1% of 104 |
| Clearfield County | 0% of 43 | 2% of 50 |
| Clinton County | 1% of 76 | 6% of 82 |
| Columbia County | 16% of 19 | 1% of 80 |
| Crawford County | – | 0% of 32 |
| Cumberland County | 0% of 25 | 13% of 172 |
| Dauphin County | 8% of 74 | 1% of 121 |
| Delaware County | 0% of 32 | 2% of 43 |
| Erie County | 30% of 33 | 4% of 109 |
| Fayette County | 0% of 12 | 7% of 28 |
| Franklin County | 0% of 43 | 10% of 67 |
| Fulton County | – | 5% of 21 |
| Greene County | 0% of 14 | 3% of 58 |
| Huntingdon County | 8% of 12 | 0% of 58 |
| Indiana County | 1% of 295 | 0% of 300 |
| Jefferson County | 0% of 43 | 0% of 55 |
| Juniata County | 0% of 10 | 0% of 27 |
| Lackawanna County | – | 0% of 43 |
| Lancaster County | 0% of 125 | 39% of 621 |
| Lawrence County | – | 0% of 29 |
| Lebanon County | 1% of 88 | 9% of 173 |
| Lehigh County | – | 2% of 161 |
| Luzerne County | 8% of 13 | 3% of 68 |
| Lycoming County | 8% of 113 | 1% of 130 |
| McKean County | – | 0% of 11 |
| Mercer County | – | 0% of 100 |
| Mifflin County | 0% of 12 | 13% of 46 |
| Monroe County | – | 0% of 28 |
| Montgomery County | 13% of 53 | 4% of 114 |
| Montour County | – | 0% of 33 |
| Northampton County | – | 21% of 29 |
| Northumberland County | 2% of 56 | 17% of 69 |
| Perry County | 0% of 24 | 4% of 85 |
| Philadelphia County | 8% of 75 | 11% of 195 |
| Pike County | 1% of 111 | 0% of 149 |
| Potter County | 3% of 98 | 0% of 92 |
| Schuylkill County | 2% of 45 | 2% of 86 |
| Snyder County | 6% of 31 | 2% of 41 |
| Somerset County | 0% of 30 | 0% of 49 |
| Sullivan County | 3% of 39 | 0% of 29 |
| Susquehanna County | 12% of 33 | 0% of 119 |
| Tioga County | 8% of 131 | 0% of 76 |
| Union County | 0% of 16 | 0% of 21 |
| Warren County | – | 0% of 90 |
| Washington County | 0% of 10 | 8% of 12 |
| Wayne County | 3% of 143 | 0% of 150 |
| Westmoreland County | – | 0% of 25 |
| Wyoming County | 4% of 23 | 2% of 47 |
| York County | 0% of 67 | 10% of 201 |
No rows match these filters. Try fewer words or clear the filters.
Nitrate: 8% of 6,478 sampled wells statewide. All Pennsylvania counties →
Labs on the Pennsylvania DEP list
- Pace Analytical Services, LLC - Altoona, PA, AltoonaListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- NSF International, Ann ArborListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Phase Separation Science Inc, BaltimoreListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- PAW - Bangor Lab, BangorListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- ABE Laboratories LLC, BathListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Sahli Lab, Beaver FallsListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- American Water Central Laboratory, BellevilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Criterion Laboratories Inc, BensalemListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Bethlehem Water Lab, BethlehemListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Blue Triton Brands, Inc., BreinigsvilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- PA American Water Brownsville Lab, BrownsvilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Aqua Pennsylvania, Inc., Bryn MawrListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Edge Analytical Inc, BurlingtonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Kevco Services, Inc, ButlerListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pennsylvania American Water Butler, ButlerListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Borough of Carlisle; Carlisle Region Water Pollution Control Facility Laboratory, CarlisleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- H & H Water Controls Inc, CarmichaelsListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Eurofins CEI Inc, CaryListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Franklin Analytical, Inc, ChambersburgListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- GEL Laboratories LLC, CharlestonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- EMSL Analytical Inc, CinnaminsonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- PAW Clarion Laboratory, ClarionListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- APPL, LLC, ClovisListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Donald Morse Laboratory, ConnellsvilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Nova Biologicals, Inc., ConroeListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Microbac Laboratories Inc New York Division, CortlandListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- ESS Laboratory, A division of the RISE Group, CranstonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- SGS North America Inc. - Dayton, DaytonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Microbac Laboratories, Inc- Dayville-CT, DayvilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pace Analytical Services, LLC - Dubois, DuboisListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Princeton Analytical Labs, DunmoreListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Eurofins St Louis, Earth CityListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Contest, A Pace Analytical Laboratory, East LongmeadowListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Eurofins Edison, EdisonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Free-Col Laboratory, ErieListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Microbac Laboratories, Inc - Erie Division, ErieListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pace Analytical Services, LLC - Erie, PA, ErieListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Presque Isle Water Testing, ErieListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pace Analytical Services, LLC - Ewing, EwingListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Hampton - Clarke Inc., FairfieldListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- AG Environmental RSC LLC, FerndaleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- BCS Laboratories Inc, GainesvilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Suburban Laboratories/Metiri Group, GenevaListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pace Analytical Services LLC - Greensburg PA, GreensburgListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Maryland Spectral Services, Inc., HalethorpeListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Microbac Laboratories, Inc. - Harrisburg, HarrisburgListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- PA DEP Bureau of Laboratories, HarrisburgListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- HawkMtn Labs Inc, Hazle TownshipListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Garden State Laboratories Inc, HillsideListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- ALS Environmental - Holland, HollandListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Chemstream Lab Services, Homer CityListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Eurofins Environment Testing Philadelphia LLC, HorshamListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- ALS Group USA, Corp. dba ALS Environmental, HoustonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Niagara Bottling, LLC, HowardListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Environmental Service Laboratories Inc, IndianaListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- PAW Indiana Laboratory, IndianaListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- RDM-Johnstown, LLC, JohnstownListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pennsylvania American Water Kane Route 321 North, KaneListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Brandywine Science Center, Kennett SquareListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- CWM Environmental, KittanningListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Eurofins Knoxville, KnoxvilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Eurofins Lancaster Laboratories Environment Testing, LLC, LancasterListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Teaco Laboratories Inc, LeechburgListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Waypoint Analytical - Pennsylvania, Inc., LeolaListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Owl Hill Laboratories LLC, LititzListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- EMSL Analytical, Inc., Long Island CityListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pace Analytical Services, LLC - Madisonville, MadisonilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Alpha Analytical, MansfieldListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Microbac Laboratories Inc Marietta Division, MariettaListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Alloway Marion, MarionListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pace Analytical Services, LLC - Melville, NY, MelvilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- ALS Environmental - Middletown, MiddletownListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Chemserve, MilfordListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Laurel Creek Filter Plant, MilroyListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- PAW Milton Lab, MiltonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pace Analytical Services, LLC - Minneapolis MN, MinneapolisListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- RJ Lee Group, Inc., MonroevilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Environmental Service Laboratories, Inc - Northern Division, MontoursvilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pace Analytical National Center for Testing & Innovation, Mount JulietListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Eurofins Built Environment Testing, Mt. LaurelListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pure-Test Laboratory, MyerstownListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Environmental Laboratory Services Inc, New CastleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pennsylvania American Water New Castle, New CastleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Laboratory, Analytical and Biological Services, Inc, New OxfordListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Batta Laboratories LLC, NewarkListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- PA American Water Co - Norristown, NorristownListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Microbac Laboratories, Inc - Northbrook, NorthbrookListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Cardan Laboratories Inc, Northern CambriaListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Battelle Analytical Chemistry Services, NorwellListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Cattaraugus County Department of Health Laboratory, OleanListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- McAndrew Laboratory, Inc., Orchard ParkListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- SGS North America Inc. - Orlando, OrlandoListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pace Analytical Services LLC Ormond Beach FL, Ormond BeachListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- H.O. Thompson Testing Lab, ParkesburgListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Philadelphia Bureau of Laboratories, PhiladelphiaListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- PAW Philipsburg Laboratory, PhilipsburgListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Allegheny County Health Department Public Health Laboratory, PittsburghListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Dream Pools and Spas Inc, PittsburghListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pennsylvania American Water: Hays Mine Laboratory, PittsburghListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Special Pathogens Laboratory, PittsburghListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Microbac Laboratories, Inc. - Pittston, PittstonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Eurofins Eaton Analytical- Pomona, PomonaListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- CWM Environmental - Pottsville, PottsvilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- PAW Punxsutawney Laboratory, PunxsutawneyListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Quakertown Veterinary Clinic, QuakertownListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- M. J. Reider Associates Inc, ReadingListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Maiden Creek Filter Plant Laboratory, ReadingListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Suburban Testing Laboratories, Inc., ReadingListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Enthalpy Analytical, LLC, RichmondListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- York Analytical Laboratories, Inc. (II), Richmond HillListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- White Oak Laboratory LLC, RidgwayListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- PAW - Lake Scranton Lab, Roaring Brook TwpListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Spring Laboratory, Roaring SpringListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Culligan Analytical Laboratory, RosemontListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Continental Water Laboratory, SacramentoListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- MAWC George Sweeney Plant, SaltsburgListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Eurofins Savannah, SavannahListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Aqua Pennsylvania Inc - Shenango Valley Division, SharonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Environmental Service Laboratories, Inc - Northwest Division, SharpsvilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Geochemical Testing, SomersetListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Eurofins Eaton Analytical, LLC, South BendListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Todd Giddings and Associates Inc, State CollegeListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- G & C Coal Analysis Lab Inc, SummervilleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Analytical Laboratories, Inc, TelfordListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Agricultural Analytical Services Laboratory, University ParkListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Environmental Service Laboratory Inc - Southern Division, Van VoorhisListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pennsylvania American Water Ellwood City, WampumListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Microbac Laboratories, Inc. Pittsburgh Division, WarrendaleListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Alpha Analytical, WestboroughListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- A E Kirby Memorial Health Center, Wilkes-BarreListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pace Analytical Services LLC - Williamsport, PA, WilliamsportListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Williamsport Sanitary Authority Laboratories, WilliamsportListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Eagle Industrial Hygiene Associates Inc, Willow GroveListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Cape Fear Analytical, LLC, WilmingtonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Enthalpy Analytical LLC - Wilmington, WilmingtonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- SGS North America Inc. - Wilmington NC, WilmingtonListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Eurofins Environment Testing Philadelphia LLC - Wind Gap, Wind GapListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Northeast Laboratory Services, WinslowListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Massachusetts Water Resrouces Authority, WinthropListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- Pace Analytical Services, LLC - Wysox, WysoxListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- The York Water Company, YorkListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
- National Testing Laboratories LTD, YpsilantiListed in Pennsylvania DEP’s certified lab list. See the official list → (checked 2024-06-11)
No rows match these filters. Try fewer words or clear the filters.
See all 4 Pennsylvania lab listings →
How to choose a lab
- Pick a lab on the official list above that is certified for each test you need (bacteria and chemistry are often separate certifications).
- Ask for the lab’s own sample bottles and instructions; bacteria samples usually must reach the lab within 24–30 hours.
- Compare prices for a basic package (bacteria, nitrate, pH/TDS) and add arsenic or other metals where local data shows a risk.
- Be wary of free in-home tests from treatment-system sellers — see our salesperson checklist.
Questions
Where can I get my well water tested in Pennsylvania?
Use a lab on Pennsylvania’s official certified-lab list. We count 146 listed labs (excluding those marked as serving public water systems only), most in Pittsburgh, Erie, Reading. Confirm the lab is certified for the exact tests you need before you send a sample.
What should I test my well for in Pennsylvania?
Test every year for bacteria (total coliform and E. coli), nitrate, pH and total dissolved solids (CDC). In Pennsylvania, 4% of sampled wells with arsenic data were above the EPA limit, so include arsenic. Use our test helper for a list that fits your home.
Is there well water data for my county in Pennsylvania?
Yes for 62 counties: we show the share of sampled wells above the EPA arsenic and nitrate limits, from the Water Quality Portal (USGS/EPA). These are monitoring wells as well as private wells, so test your own well.