Always use a state-certified laboratory for private well water testing. Certification ensures the lab follows EPA-approved analytical methods, participates in quality assurance programs, and produces legally defensible results.

National mail-in labs

Several accredited mail-in labs serve all 50 states and send sample collection kits directly to your home:

Recommended — Tap Score (SimpleLab)

Certified lab · plain-language results delivered online

Order a Tap Score Test →

National Testing Laboratories

Visit Site →

WaterCheck

Visit Site →

Find a lab in your state

We've researched and confirmed certified labs in the states below. Pick your state to jump to its list.

Georgia 7 labs Michigan 12 labs Minnesota 11 labs North Carolina 6 labs New Jersey 11 labs New York 19 labs Ohio 8 labs Pennsylvania 7 labs Texas 12 labs Virginia 14 labs Vermont 7 labs Wisconsin 18 labs

Georgia

AESL Water Analyses → Lab & Field Services → Non-Public Water Supply Testing Guidance → Private Wells - Cumming Utilities → Well Water Testing Dublin GA | Certified Lab Analysis Laurens ... (Laurens County) $75 Well Water Testing of Georgia by U.S.Water & Air → Well Water Testing Service in Chatham County (Chatham County) →

Michigan

Drinking Water Testing Services | Paragon Laboratories | Livonia, MI → Home Water Testing | AquaTest Laboratories → Home | B.E.S.T. Labs, Inc. → Laboratory - Prein&Newhof → Michigan Well Water Testing & Inspections → Michigan Well Water Testing - Water Test, FHA VA & USDA Water Testing → Pricing | Great Lakes Water Quality Lab → Private Well Water Testing Services for Michigan Residents - Advanced ... (Oakland County) → Trace Analytical Laboratories, Inc → Water Analysis | Michigan Water Testing Lab → Water Quality Testing for Wells - Livingston County, MI (Livingston County) → Well Testing Services | Raven Analytical Laboratories →

Minnesota

Certifications & Memberships - Minnesota Valley Testing Laboratories, Inc. → Engel Water Testing | Home → Home | AW Research Laboratories → Instrumental Research Water Testing Labs → Order Water Tests - Minnesota Well Owners Organization → Rural Health and Drinking Water - Freshwater Society → Twin City Water Clinic | Well Water Testing | Minnesota & Wisconsin → Water Quality Testing | Natural Resources Research Institute → Water Tests | Washington County, MN - Official Website (Washington County) → Well Water Testing (Fillmore County) $60 Well Water Testing | Anoka County, MN - Official Website (Anoka County) →

North Carolina

Drinking Water Laboratories | NC DEQ → North Carolina Water Testing Labs: Find EPA-Certified Laboratories | TapWaterData → Update on Well Water Testing Resources in Western NC | NC State Extension → VA, FHA & USDA Certified Well Water Testing North Carolina - Clean Water Labs → Wake County Water Quality Lab | Wake County Government (Wake County) → Water Testing | Orange County, NC (Orange County) →

New Jersey

Department of Environmental Protection - Lab Finder → Drinking Water Testing and Sampling in New Jersey → Environmental Well Testing: Well Water Testing Services | New Jersey $925 Home | Garden State Labs - Environmental Laboratory - New Jersey, USA → New Jersey Home Water Testing Services - RAdata → New Jersey Private Well Testing Act PWTA - EMSL → Olympian Water Testing™ | NY, NJ & CT | NELAP Accredited ... → SJ Water Test | → Water Testing Laboratory - ACUA → Water Testing | Environmental Laboratory Network Ringwood NJ → Well Testing - Raritan Headwaters →

New York

Capital Region Environmental Lab: New York Potable Water Testing → Cornell Cooperative Extension | Labs for Testing Your Drinking Water (Tompkins County) → Cornell Cooperative Extension | Well Water (Saratoga County) → Cornell Cooperative Extension | ​Water Testing Drop off Sites (Cayuga County) → Drinking Water Quality & Private Well Testing (Greene County) → Drinking Water Testing — Agricultural Analytical Services Lab → How to get your Drinking Water Tested in Hudson Valley New York and Connecticut - York Lab → I want to test my water | Community Science Institute → Lab Price List - MVWA $15 Laboratory - Upstate Freshwater Institute → NY Water Testing Labs for Food Safety Use → Olympian Water Testing™ | NY, NJ & CT | NELAP Accredited ... → Private Drinking Water | Tompkins County (Tompkins County) → Private Well Water Testing Program - Suffolk County Government (Suffolk County) → Search NY Labs - Current scope as of → Well Water - Cornell Cooperative Extension (Oneida County) → Well Water - Cornell Cooperative Extension Onondaga County (Onondaga County) → Well Water Sampling Program - Cornell Cooperative Extension (Ontario County) $51 Well Water Testing | Binghamton, Ithaca, Cooperstown & Cortland, NY →

Ohio

Drinking Water | Brookside Laboratories, Inc. → EPA-Certified Water Testing • Water Treatment • Q Laboratories → Home | Jones & Henry Laboratories, Inc. → Ohio Water Test Kits - drinkingwaterlabs.com → Water Quality - Ohio Department of Health - Confirmed Labs → Water Testing Services from Benchmark Labs | Columbus, Ohio → Watercheck - NTL - Residential & Commercial Water Testing → Where to Have Your Water Tested | Ohioline - Ohio State University →

Pennsylvania

CERTIFIED WATER TESTING Fast, Accurate, DEP-Accredited → Drinking Water Testing (Agricultural Analytical Services Lab) → Drinking Water Testing - Pike County, PA (Pike County) → Laboratory, Analytical & Biological Services (Labs), Inc New Oxford → Private Well Water Water Testing Pennsylvania Certified Laboratories ... → Water Testing Laboratory - ABE Laboratories → Water Testing | Department of Environmental Protection - PA.GOV →

Texas

Accreditations & Certifications | Eastex (Austin County) → Aqua-Tech Laboratories | Accredited Water Testing Lab | Austin | Bryan → Bio Chem Lab: Central Texas Water Testing Services → Drinking Water Testing - Ablabs (King County) → Laboratory Information - ANRA (Angelina County) → Private Well & Drinking Water Tests | NET Health Lab → Residential Water Supply Testing - Austin → Resources for Sampling Private Water Wells → Water Lab | Brazoria County, TX (Brazoria County) → Water Quality Testing - Galveston County Extension (Galveston County) → Water Testing (Tarrant County) → Watercheck - NTL - Residential & Commercial Water Testing →

Virginia

Accreditation & Certifications - Prince William Water → Biotech Laboratory LLC → E coli water testing labs in Virginia tri-state area 1-800-582-5211 → Home Water Quality | Virginia Cooperative Extension | Virginia Tech → Household Water Quality Testing Program | Loudoun County, VA (Loudoun County) $70 Mid-Atlantic Laboratories → Private Well Water Testing - Virginia Environmental Resources → VA, FHA & USDA Certified Well Water Testing North Carolina - Clean Water Labs → Virginia Household Water Quality Program - Virginia Tech $70 Water Quality Laboratories Certified in West Virginia → Water Quality Testing - Southern Brothers Inspections → Water Testing - Sampling & Analysis - Conventional, VA, FHA, Day Care $170 Water Testing Near Me | MD, DC & Northern Virginia $150–$400 Well water testing in Central Virginia, VA (Frederick County) →

Vermont

Certified Laboratories for Landowner Water Quality Testing → Commercial and Residential Water Testing $159 Drinking Water Testing | Vermont Department of Health → Vermont State Drinking Water → Virginia Household Water Quality Program - Virginia Tech → Well Water Testing in New England | Dartmouth Toxic Metals → Well Water Testing in Vermont: What to Test For →

Wisconsin

Certifications - White Water Associates → Clean Water Testing → Private and Public Well Water Tests | Kenosha County, WI (Kenosha County) → Private Well Water Quality and Laboratory Services (Waukesha County) → Water Quality Testing by TG Analytical Laboratories → Water Quality Testing | Bayfield County, WI - Official Website (Bayfield County) → Water Testing - Extension Oneida County (Oneida County) → Water Testing for Private Wells - Vernon County (Vernon County) $30 Water Testing | Green County, WI (Green County) → Well Water Test Kits | Door County, WI (Door County) $30 Well Water Testing - Drinking Water - Rusk County, WI (Rusk County) → Well Water Testing - University of Wisconsin-Stevens Point → Well water testing in Wisconsin → Well Water Testing Initiatives Polk County WI (Polk County) → Well Water Testing – Extension Oconto County (Oconto County) $68 Wisconsin Certified Water Testing Laboratory → Wisconsin State-Certified Water Testing Laboratory → Wisconsin Water Tests Kits - drinkingwaterlabs.com →

What to look for in a lab