In most instances, TDS in your drinking water will not present a health problem but it's important to note, should TDS levels exceed 1000mg/L, the drinking water can be considered unfit for human consumption. ... This is a small hand-held device used to indicate the amount of total dissolved solids.

How harmful is TDS?

Health Purposes- Water with high TDS is completely safe to drink. However, some substances such as lead, or copper can lead to health hazards. Cooking- Though high TDS doesn't affect health, it can alter the taste of your food.

Is high TDS good or bad?

A high TDS reading may indicate elevated levels of corrosive compounds. While these solids may not affect human health, they can cause technical damage to your home's plumbing and surfaces. Elevated TDS levels can indicate corrosive water.