The 8 Best Water Testing Kits of 2021

Best Overall: Safe Home Ultimate Drinking Water Test Kit

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If you’re concerned about the safety of your drinking water, a water testing kit is an easy way to find out if there are contaminants in the water. According to the National Sanitation Foundation's International’s Global Water Program, the primary contaminants found in drinking water are lead, arsenic, bacteria (coliform), cysts and viruses, chlorine, chloramine, chromium, fluoride, nitrates and nitrites, PFOA and PFOS, Total Trihalomethanes (TTHM) and Volatile Organic Compounds (VOCs).

For one of the most comprehensive water testing kits on the market, consider the Ultimate kit from Safe Home. This mail-in water testing kit will screen your sample for over 200 contaminants and provide in-depth results. The kit tests for 6 in-organic substances, 12 physical properties, 32 toxic metals, 20 semi-volatile organic compounds, and 130 volatile organic compounds. It also includes an at-home test for coliform (bacteria) and instructions on how to complete it.

The parent company to Safe Home is Environmental Laboratories, which is one of the largest EPA-certified drinking water labs in North America. So when you mail your sample in, you can have confidence in the quality of analysis performed. And while everyone loves instant results, most people receive their results within ten days of submission. This kit is on the pricey side, but it provides the in-depth testing that you can rely on when making big decisions about the safety of your water supply and what type of home water filters to invest in. 

Best for Lead: Health Metric Heavy Metals Test Kit

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Lead is a concerning contaminant, especially because you can't see, taste, or smell it in your glass. In addition, other heavy metals like mercury and copper raise their own health concerns. The Health Metrics Heavy Metals test is an informative way to rule out or confirm the presence of lead and other metals. 

This water testing kit for lead, mercury, copper, and iron takes under 15 minutes to complete. While there is one lead test included in the kit, you can test for the other three metals twice and receive quantified results for the presence of these metals. For lead, the test is of a pass/fail nature, which is the case for virtually all at-home lead water testing kits. The EPA has set a limit of 15 ppb for lead in municipal water supplies and this testing kit will indicate whether your water contains lead above or below the 15 ppb threshold. 

According to users, the test kit is easy to use and provides peace of mind if your lead is below the EPA limit. If not, it’s a small investment to make in order to know that you need to have a more in-depth analysis done and implement steps to improve your water quality and reduce exposure to lead.

Best for Well Water: Health Metric Well Water Test Kit for Drinking Water

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Performing tests on well water is particularly important, since the EPA doesn’t regulate private wells, so bacteria, along with nitrites, nitrates, and hydrogen sulfide, can easily affect your water source. This well water testing kit covers all the bases to give you peace of mind regarding the quality of your well water. It provides insights into the presence of bacteria, nitrates and nitrites, manganese, and hydrogen sulfide, plus a guide to the total alkalinity, total hardness, and pH of your water. 

This test kit is simple, straightforward, and provides users with laboratory-grade results. Providing results in just five minutes, it also takes less time to process compared to other test kits on this list.

Runner-Up, Best for Well Water: Watersafe Well Water Test Kit

3.6

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Another option that provides dependable results is the WaterSafe Well Water Test Kit. This easy-to-use kit gives you information on 10 different containments without having to send in water samples and wait for the results. It tests for copper, iron, lead, nitrates, nitrites, bacteria, and also toxins from fertilizers or pesticides—a common concern for well water.

Using this kit is simple and fast, as it comes with easy-to-read strips that provide ranges for each tested contaminant. Since the results are provided within a range only, it is not as specific as laboratory testing.

Best for Homes: Simple Water Tap Score Professional Home Water Test

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If you’re looking for a water testing kit for your home, the Tap Score Activated Home Water Test is a pricey but informative option. This mail-in water testing kit will screen your sample for more than 100 different contaminants utilizing a network of EPA laboratories. You receive results within about 5 days and contaminants are quantified so that you can have more insights into your home’s water quality. 

A major benefit of the Tap Score water testing kit is the fact that your analysis includes water treatment advice and the support of a team of water engineers and experts. The company states that it is not affiliated with any water treatment companies and provides objective advice on how to tackle troublesome contaminants or improve the general quality of your water for drinking, cooking, bathing, laundry, and more.

Best for Pools: Poolmaster 22260 5-Way Swimming Pool Chemistry Test

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Take charge of your pool chemistry with this water testing kit for pools. The Poolmaster 5-Way Swimming Pool Chemistry Test covers all the essentials you need for routine monitoring and maintenance of your pool. This kit quickly tests for chlorine, bromine, pH, acid demand, and total alkalinity, and it uses drop reagents versus paper strips. While both can be effective testing methods, some feel that drop reagents provide more accurate testing results.

Some people have critiqued the chlorine test for making it difficult to determine free chlorine versus total chlorine. This kit contains the essentials you need to affordably monitor your pool chemicals in between trips to the pool store for more in-depth testing.

Best for Salt Water Pools: AquaChek 561140A Salt Water Swimming Pool Test Strips

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If you have a saltwater pool, you enjoy the silky, smooth water thanks to the power of a salt-chlorine generator. While the generator will typically display a reading for the salt level of the system, if you suspect a problem, you may want to begin your troubleshooting by checking the salinity of your pool water and comparing it to what the display on your salt chlorine generator states. 

Use AquaChek Salt Water Swimming Pool Test Strips to ensure that your system is functioning properly and your pool has the proper salinity. Just be sure that you follow the directions and only immerse the strip in 1 inch of water.