Water quality meters from US brands and US-based sellers
7 US brands and sellers surfaced here at $14.50 to $2149.00, each verified from Amazon's own published seller info. Last verified September 13, 2026.
A water quality meter lives or dies on its probe and its calibration, not its case. Cheap versions use bare metal contacts that corrode after a few dozen readings and ship with no way to recalibrate, so the number on screen drifts and you never know it.
What to look for in a good water quality meter
- Probe material. Look for a stainless steel or gold-plated electrode, not exposed aluminum or plain copper pins that oxidize the first time they touch tap water.
- Calibration options. A real meter comes with calibration solution and a small screwdriver or dial for adjustment, the throwaway version locks you into whatever reading it gave out of the box.
- Temperature compensation. Automatic temperature compensation (ATC) keeps TDS and EC readings accurate across water temperatures, cheap units skip it and just report raw, unadjusted numbers.
- Price as a signal. US-sold options here run from about $15 to $2,149, so a $6 meter with no brand behind it is competing by cutting the probe, not the price.
We read each seller's registered country from Amazon's own published seller info. We don't claim anything here is manufactured in the US, only that you're buying from a US brand or a US-based seller.
Quick comparison
| Brand | Price | Seller |
|---|---|---|
| Hach | $2149.00 | US brand |
| Extech | $309.00 | US-based seller |
| Hanna Instruments | $216.97 | US-based seller |
| HM Digital | $14.50 | US-based seller |
| Myron L | $1039.99 | US-based seller |
| Oakton | $86.17 | US-based seller |
| YSI | $844.01 | US-based seller |
Confirmed US brands and sellers
7 listings where Amazon's own seller info places the seller in the US. Each badge says which.
Hach 2100Q Portable Turbidimeter EPA, Water Quality Tester, 2100Q01
Extech DO600 Waterproof ExStik II Dissolved Oxygen Meter
Hanna Instruments HI98128 pHep 5pH/Temperature Tester, 6-25/64" Length x 1-19/32" Width x 1" Height
HM Digital TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy
Myron L 6PIIFCE Conductivity, Resistivity, TDS, pH, ORP/Free Chlorine, Temperature Meter
Oakton 35634-05, EcoTestr pH1 Waterproof Pocket Tester
YSI - 6050020 Pro20 Lab/Field Dissolved Oxygen/Temperature Meter, 0 to 50 mg/L, 0.1 mg/L, 0 to 20 mg/L, -5 to 55 degree C, 8-1/2" Length x 3-1/4" Width x 2-13/64" Depth
US brands we went looking for
More names an AI suggested for this category that we haven't confirmed US on yet. Each badge says how far we've checked it.
Suggested, not verified. These names came from an AI suggestion, not from our data. We only call a brand US after checking the seller's registered address on its Amazon seller page. Amazon is the seller on these, so its seller page can't tell us who the brand is.
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