Rainwater Test Kits
If you source your drinking water from a rainwater harvesting system, these water test kits let you test for common contaminants that can affect your pumps, tanks, and your health. Our award-winning mail-to-lab kits are always tested in independent and certified laboratories.
- All Sampling Materials Included
- Certified Lab Testing
- Easy-To-Read Results
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Core KitEssential Rainwater Test
53 Analytes TestedBaseline water quality test for rainwater safety in a catchment or other harvesting system.
Regular price $215.00Regular priceUnit price per -
Core KitAdvanced Rainwater Test
113 Analytes TestedIdeal water quality test to ensure correct setup of rainwater catchment system, and for those noticing unpleasant tastes or smells in rainwater.
Regular price $315.00Regular priceUnit price perMost Popular
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How Tap Score Works
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Step 4
| Recommended | |||
|---|---|---|---|
Which core kit is right for me? |  Essential Rainwater Test
|  Advanced Rainwater Test
|  Most Comprehensive Water Test
|
| Number of Analytes | 53 | 113 | 359 |
| Free Shipping | Standard | Standard | Overnight |
| Days at Lab | 5 | 5 | 12 |
| General Properties | 14 | 15 | 15 |
| Coliform & Microbiology | 2 | 2 | 3 |
| Inorganics & Fertilizers | 8 | 8 | 8 |
| Metals & Minerals | 29 | 29 | 29 |
| VOCs & SVOCs | — | 51 | 94 |
| Petroleum Compounds | — | 7 | 24 |
| Pesticides | — | 1 | 146 |
| Radiologicals | — | — | 3 |
| PFAS | — | — | 25 |
| Other | — | — | 10 |
| $215.00 | $315.00 | $2,699.00 |
Looking for the most exhaustive test panel available? This is the kit for you—no other test screens for more. While our core kits over what most households need, this kit is for those who want to leave no stone unturned in their water analysis.
$2,699
Additional Testing
Shop PFAS Kits
Should I test for PFAS?
Our Core Kits focus first on the most well-established and high-priority contaminants—those backed by decades of research. You can add a PFAS kit to your order if you have reason to believe it's present in your water.
Not sure where to begin? Let us help.
We know this stuff feels complicated, but we are dedicated to keeping it simple. Answers to all your questions are always a chat away.
Which Core Kit do I need?
Which kit you choose depends on how many contaminants you'd like to test. Consult any Core Kit product page for a side-by-side comparison or try our Customize My Kit feature to match your needs with the perfect option.
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 does 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.