TDS In Water: What Is It?
TDS is the abbreviation for “Total Dissolved Solids”, and this can comprise of organic and inorganic dissolved substances. See, water is a great solvent (a material which makes it easy for other substances to dissolve into it) and as such, picks up impurities easily. You wouldn’t want 100% pure, TDS-free water, because it is entirely tasteless. Dissolved solids, in this sense, refer to minerals, metals, salts and ions dissolved into the water. While an exceptionally high TDS level may be something to look into, a slightly elevated level is not a health hazard. TDS Is a “secondary” drinking water standard and is regulated – because is is not an integral health hazard.
What Does A High TDS Level Mean?
So, your area may have a high TDS level of municipal water. This could be because of one of two reasons:
The concentration of dissolved ions may make the water corrosive, salty to taste, result in lime-scale build-up in household water-containing appliances and may lower the efficiency of hot water heaters. This is because of a large amount of minerals diffused into the water which hold these “destructive” properties.
It may also indicate higher than normal levels of ions, comprising of nitrate, aluminium, copper and lead.
How Do I Measure My TDS Levels?
Whether you suspect higher than normal TDS levels to your household water supply, it’s always interesting to see what you are being exposed to. A simple way to test the TDS levels of your water is to use a commercially available electronic pen or pad. What these devices do is measure the conductivity of the water (ability of the water to carry an ion, positive or negative) and not the TDS itself. These devices cannot be counted as entirely accurate sources, but they give a great approximation of the TDS levels in your water.
What Is A Normal TDS For Water?
The palatability of drinking- water has been rated by panels of tasters in relation to its TDS level as follows: excellent, less than 300 mg/litre; good, between 300 and 600 mg/litre; fair, between 600 and 900 mg/litre; poor, between 900 and 1200 mg/litre; and unacceptable, greater than 1200 mg/litre. Water with extremely low concentrations of TDS may also be unacceptable because of its flat, insipid taste.
A high TDS measurement only shows that your water sample contains a high concentration of dissolved solids such as minerals and salts. If you already have a filter in place, the measurement will vary depending on how your filter works and how clean/dirty the filters are.
(As quoted from Aquatic Smart.com)
While it’s difficult to give an exact amount of TDS to be looking out for, a good rule-of-thumb is that it should be as close to nil as possible. Aquazania’s purified water has a nil TDS level, and to alleviate the tastelessness of the TDS free water, mineral re-injection is vital.
Aqua-pinion: What is your optimal TDS level? Have you had better experience with the installation of a water filter, or does this not influence your water drinking habits?
We love to hear your feedback.