More certified labs. More access. Faster results.

Unlike other test providers, we partner with hundreds of independent, certified labs all across the country, allowing us to test your water sample faster and with higher scientific standards.

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Accredited in all 50 states, Canada and Puerto Rico.

With over 200 world-class testing facilities in our network, we can test your drinking water sample with greater specialization, faster speeds and higher standards.


Certified lab testing near me.

We send your water sample to the closest available certified lab in our network to ensure your water gets tested quicker and you receive results faster (typically 5 to 7 business days).


Specialized, independent and impartial.

There are no generalists among our lab partners. Every facility in our network is world-class, highly specialized, and proudly independent. We let the science speak for itself.


Water reports you can trust.

After our labs evaluate your drinking water, we generate your Tap Score™ using an algorithm that removes subjectivity and supports unbiased solutions.

Our algorithm calculates

Health & Safety

Water Aesthetics

Plumbing Impact

Treatment Recommendations

Tap Score Report

Meet The Team

Tap Score science and laboratory leadership.

  • Jessica Goddard, PhD

    Chief Science Officer

    Jess leads the scientific program at Tap Score and oversees all analytical products and services. She holds a PhD in water resources and a masters in environmental engineering from UC Berkeley.

  • Sam Bear

    Senior Research Scientist

    Sam oversees Tap Score research, laboratory methods and quality control. She holds a masters in environmental engineering from UC Berkeley and a B.S.E. in chemistry and environmental engineering from Duke University.

  • Carsten Prasse, PhD

    Scientific Advisor

    Carsten is a professor of Environmental Health and Engineering at Johns Hopkins University. His lab uses analytical chemistry, toxicology, and engineering to study health risks of contaminants in the environment.

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Targeted Testing

Tests for every water type.

All homes, plumbing and drinking water sources are different, so we have spent years developing tests for every possible scenario, no matter where you live.

  • Get Covered

    Our Core Kits, based on your water source, will cover just about everything you need. We recommend everyone start here, then customize as needed.

  • Get Specific

    If you have a very specific exposure risk or concern, like agricultural runoff, you may want to shop our smaller, more focused kits.

  • Get Nerdy

    Do you know your stuff? You looking for something realllly specific? Then you can shop our water tests by the exact substance you have in mind.


Have questions about our labs?

We take great pride in our scientific standards, methods and process so ask us anything. We're here to help.


Are your labs EPA certified?

The EPA validates certain analytical methods but gives facility certification powers to outside agencies, which have certified ALL Tap Score labs with various accreditations ranging from ISO, to NELAC, to State, to DoD (among others).

How accurate are my results?

Instrumentation is extremely accurate when reporting concentration data and any variability in sample testing results comes from changes in the sample itself.

Which lab will my sample go to?

Depending on your location and the testing kit you select, your samples will be shipped to the laboratory that best meets your needs for turnaround time, instrumentation, and testing methods.

How complex is the report?

Your report, which includes your personalized tap score and contaminant breakdown, is designed to be comprehensive but simple, actionable and easy to read. And should you have questions, you know where to find us.