Water Systems
Water Testing & Quality
Testing your actual water — before buying any filter, softener, or RO system — tells you what you're really dealing with, rather than guessing from marketing claims.
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What's in this category
Strip or drop-based kits for common parameters — hardness, chlorine, pH, sometimes nitrates.
Broader panels aimed at what private wells commonly carry — bacteria, nitrates, iron, and more.
Read conductivity to estimate total dissolved solids — useful for tracking filter performance.
Give a precise numeric pH reading, more accurate than color-based strip tests.
Measures grains of hardness per gallon — the number that sizes a water softener correctly.
Certified lab panels for lead, bacteria, pesticides, and other health-relevant contaminants that strips can't reliably catch.
Understand what your municipal water report or a home test result actually means.
Top picks in this category
We are still verifying product picks for water testing, and we only list products after an editor has checked them. Until then, here is how to build a shortlist that fits your home.
- Lab or strips. Strips are a fast screen. A certified lab gives measured concentrations you can act on.
- What it measures. Match the panel to your concern: lead, bacteria, nitrates, hardness, PFAS or VOCs. Check the parameter list before buying.
- Sampling instructions. Results depend on how the sample was taken (first-draw versus flushed). Follow the kit exactly.
- Limits of a meter. A TDS meter reports total dissolved solids only. It cannot tell you which substances are present or whether the water is safe.
Frequently asked questions
Are test strips accurate enough to trust?
For hardness, chlorine, and pH, strip tests are generally reliable for a rough reading. For anything with health implications — lead, bacteria — a certified lab test is the more trustworthy option.
Do I need to test city water if it's already treated?
Municipal suppliers publish an annual water quality report, but a home test still catches issues specific to your own building's plumbing, like lead leaching from old pipes.
What's a 'good' TDS reading?
There's no single universal number — it depends on the source. See our bottled water TDS chart for how a wide range of waters compare, from near-zero (RO/distilled) to several hundred ppm for some mineral waters.
