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Certified Tap Score
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How it works
1. Collect Sample
We ship you everything you need to test your drinking water, including a guide on how to collect your sample.
2. Ship to Lab
Send your sample back to us for rigorous, certified, independent testing. The shipping’s on us!
3. Get Report
After our labs analyze your sample, we’ll send you a full report on what's in your water and what to do next.
After our certified labs receive and test your water sample, we will email your custom Tap Score Report, a simple digital tool that helps you understand exactly what’s in your water and what you can do about it.
"It was easy and gave us a lot of good details. We learned that we do not have arsenic in our well water. We also learned our water is super hard and the report actually said "do not water your plants with this water, it will kill them" I just thought I sucked at growing plants, it's nice to know its not me, it's the hard water."
"This test is worth it. It is the same price or cheaper than any lab I've seen, but you just mail it in. The results were were extremely detailed and the online interface is very user-friendly and easy to understand."
Simple interface and useful information make this a good value. I live in a 1956 airspace condo with good pipes but bad maintenance, so for everyone’s peace of mind I went ahead and got this done (and also previously ran basic asbestos tests on the plasterboard and ceiling popcorn. We’re all good here!
— C. FISHER
The testing done is superior to what we had done by a local company. This makes it an excellent value for those of us that are on our own wells. If you want a water test that is outstanding check these folks out.
— TOM G.
Not what you’re looking for?
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Test KitsSHOP COLLECTION
Test for multiple contaminants with a single kit, customized for your specific drinking water source.
Test KitsSHOP COLLECTION
Shop tests developed for specific exposure risks or concerns, like agricultural runoff or PFAS.
Contaminant GlossarySEARCH CONTAMINANTS
Have a one track mind? Search by contaminant for tests that provide deep analysis of a single substance.
Go ahead. Ask us anything
We know this stuff feels complicated, but we are dedicated to keeping it simple. Answers to all your questions are always a chat or FAQ away.
Which test is right for me?
When in doubt, start with a Core Kit to analyze multiple contaminants with a single test. If you have more specific motivations for testing, try our Customize My Kit feature to match your needs to the right test(s).
What's the turnaround time?
Most people receive results within 3-5 business days after the lab receives their sample. However, some tests may require additional analytical time so be sure to check each kit’s product page for the most accurate estimate.
What will my report include?
Your report will rank your water against local and federal safety benchmarks, provide a thorough breakdown of any contaminants detected and how they may be affecting your health or plumbing, and provide non-biased treatment recommendations.
Are Tap Score labs certified?
Every lab facility in our network is certified with accreditations ranging from ISO to NELAC/ELAP, Direct State, DoD, DoE, DoH and beyond. Need a specific certification? Let us know so that we can meet your needs accordingly.