Monthly News: February 2014

Why Should You Measure the TDS level in your Water?

The EPA Secondary Regulations advise a maximum contamination level (MCL) of 500mg/liter (500 parts per million (ppm)) for TDS. Numerous water supplies exceed this level. When TDS levels exceed 1000mg/L it is generally considered unfit for human consumption. A high level of TDS is an indicator of potential concerns, and warrants further investigation. Most often, high levels of TDS are caused by the presence of potassium, chlorides and sodium. These ions have little or no short-term effects, but toxic ions (lead arsenic, cadmium, nitrate and others) may also be dissolved in the water.

The following are reasons why it is helpful to constantly test for TDS:

Taste/Health High TDS results in undesirable taste which could be salty, bitter, or metallic. It could also indicate the presence of toxic minerals. The EPA’s recommended maximum of TDS in water is 500mg/L (500ppm).
Filter performance Test your water to make sure the filter system has a high rejection rate and know when to change your filter (or membrane) cartridges.
Hardness High TDS indicates Hard water, which causes scale buildup in pipes and valves, inhibiting performance.
Aquaculture A constant level of minerals is necessary for aquatic life. The water in an aquarium should have the same levels of TDS and pH as the fish and reef’s original habitat.
Hydroponics TDS is the best measurement of the nutrient concentration in a hydroponics’ solution.
Pools and Spas TDS levels must be monitored to prevent maintenance problems.
Commercial/Industrial High TDS levels could impede the functions of certain applications.

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