- 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 rescommended maximum level of TDS in water is 500mg/L (500ppm).
- Test your water to make sure the reverse osmosis or other type of water filter or water purification system has a high rejection rate and know when to change your filter (or membrane) cartridges.
- High TDS indicates Hard water, which causes scale buildup in pipes and valves, inhibiting performance.
- A constant level of minerals is necessary for aquatic life. The water in an aquarium or tank should have the same levels of TDS and pH as the fish and reef's original habitat.
- TDS is the best measurement of the nutrient concentration in a hydroponic solution.
- TDS levels must be monitored to prevent maintenance problems.
- High TDS levels could impede the functions of certain applications, such as boilers and cooling towers, food and water production and more.
- TDS levels must be controlled prior to making colloidal silver.
- For a truly great cup of coffee, proper TDS levels must be maintained.
- Have a washer with a spotless rinse? An inline dual TDS monitor will tell you when to change the filter cartridge or RO membrane.
How Do You Reduce or Remove the TDS in Your Water?
Common water filter and water purification systems:
- Charcoal, a form of carbon with a high surface area, adsorbs (or sticks to) many compounds, including some toxic compounds. Water is passed through activated charcoal to remove such contaminants.
- Reverse osmosis works by forcing water under great pressure against a semi-permeable membrane that allows water molecules to pass through while excluding most contaminants. RO is the most thorough method of large-scale water purification available.
- Distillation involves boiling the water to produce water vapor. The water vapor then rises to a cooled surface where it can condense back into a liquid and be collected. Because the dissolved solids are not normally vaporized, they remain in the boiling solution.
- Water is passed between a positive electrode and a negative electrode. Ion selective membranes allow the positive ions to separate from the water toward the negative electrode and the negative ions toward the positive electrode. High purity de-ionized water results. The water is usually passed through a reverse osmosis unit first to remove nonionic organic contaminants.