TDS meter

Know your water’s quality — instantly. The ZeroWater Blue TDS Meter is a fast, accurate way to measure the total dissolved solids (TDS) in your drinking water. Designed for ease of use, it gives you a clear reading in seconds, helping you understand exactly when it’s time to change your filter or evaluate your water source.

The problem: Most water contains invisible dissolved solids such as minerals, metals, salts, or other impurities. These can affect both taste and purity — and even chemically “clean” water can have high TDS levels that signal contamination or poor filtration efficiency.

The solution: The ZeroWater TDS Meter uses electrical conductivity technology to detect the concentration of dissolved solids, displaying results in parts per million (ppm). The lower the number, the purer your water. ZeroWater’s 5-stage filters reduce TDS down to near-zero, and this meter helps verify when that performance starts to decline.

Simple to use, built to last: Just turn on the meter, submerge the probe, and read the result on the digital LCD screen. Compact and portable, it’s ideal for testing tap water, filtered water, bottled water, aquariums, and more. A long battery life and pre-calibrated design ensure accurate readings every time.

Trust the results: Each ZeroWater meter is factory-tested to ensure measurement accuracy within ±2%. It’s the same model included with all ZeroWater pitchers and dispensers, trusted by households and laboratories worldwide for dependable water quality monitoring.

Why it matters: Knowing your TDS level helps you maintain better water quality and filter performance. Whether you’re testing home, office, or travel water sources, the ZeroWater Blue TDS Meter gives you confidence that what you drink is truly clean.