{"id":1010,"date":"2026-08-31T19:29:09","date_gmt":"2026-08-31T11:29:09","guid":{"rendered":"https:\/\/www.chengrongtimes.com\/?p=1010"},"modified":"2026-08-31T19:29:10","modified_gmt":"2026-08-31T11:29:10","slug":"what-can-tds-water-testing-actually-detect-what-cant-a-tds-meter-detect","status":"publish","type":"post","link":"https:\/\/www.chengrongtimes.com\/?p=1010","title":{"rendered":"What Can TDS Water Testing Actually Detect? What Can\u2019t a TDS Meter Detect?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Many consumers have purchased a <strong>water testing tds meter<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The main reason for buying a TDS meter is to quickly determine whether the water at home is of good quality through a simple test result.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, in reality, <strong>TDS testing and complete water quality testing are two completely different concepts<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TDS can help us quickly understand the approximate level of dissolved solids in water, but TDS testing cannot directly determine whether water contains bacteria, viruses, parasites, toxic heavy metals, or certain trace organic pollutants.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, correctly understanding what <strong>tds water testing<\/strong> can and cannot detect is very important for determining whether household drinking water and domestic water require purification.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. What Does TDS Water Testing Actually Measure?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">TDS stands for Total Dissolved Solids.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Simply put, TDS reflects the overall level of various solid substances dissolved in water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When water is not contaminated, TDS mainly comes from inorganic salts dissolved in the water, which are what we commonly call <strong>minerals and trace elements<\/strong>. Therefore, TDS is also often referred to as the mineralization level of water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A certain amount of minerals and trace elements in water is itself an important natural characteristic of natural water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Among them, calcium salts and magnesium salts are usually major contributors to TDS. When the concentration of calcium and magnesium ions in water is relatively high, the hardness of the water is also higher, and the TDS value usually increases accordingly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, <strong>a high TDS value does not necessarily mean that water is contaminated, and a low TDS value does not necessarily mean that the water is safe.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is also one of the most common misunderstandings when performing tds water testing.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. What Is the Typical TDS Level of Tap Water in China?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The TDS of tap water in China is generally <strong>100~300mg\/L<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Generally speaking, groundwater contains more minerals, so its TDS is usually higher.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Natural water sources vary significantly from one region to another. For example, in rural areas of Chaoshan, some regions mainly use small streams and mountain spring water as domestic drinking water. Because the hardness of some local spring water is not high, its TDS is not necessarily high either.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This illustrates an important point:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>TDS is an important water quality reference indicator, but water safety cannot be judged based on TDS alone without considering the water source, water quality, and local environment.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you want to understand the actual condition of household water, a water testing tds meter can be used as a first step. However, for unregulated water sources, further professional water quality testing is necessary.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. What Does TDS Mainly Affect? What TDS Level Is Suitable for Drinking?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">TDS mainly reflects the overall level of dissolved minerals in water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The TDS level first affects the taste of water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If TDS is extremely low, some consumers may feel that the water tastes bland and lacks flavor. Therefore, some ChengrongTimes users choose to purchase mineral-like water purifiers because they feel that the water produced by pure water systems does not taste good.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Based on practical experience, <strong>a TDS value within 300 is suitable for drinking<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At the same time, Professor Shu Weiqun of Army Medical University, an authoritative expert in China&#8217;s water health field, stated in the book <em>Drinking for Nutrition: Understanding Drinking Water, Minerals and Health<\/em>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>When TDS is 50~300mg\/L, the water has a good taste;<\/strong><\/li>\n\n\n\n<li><strong>When TDS is 300~600mg\/L, the water has the best taste;<\/strong><\/li>\n\n\n\n<li><strong>When TDS is higher, the water becomes less suitable for drinking.<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, when discussing <strong>what TDS level is suitable for drinking<\/strong>, it cannot simply be assumed that lower TDS is always better.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For drinking water, TDS is more suitable as a reference indicator for understanding the overall level of dissolved substances and changes in water taste, rather than as the only standard for judging water safety.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. What Happens When TDS Is Higher Than 500mg\/L?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When <strong>TDS is higher than 500mg\/L<\/strong>, water is more likely to cause scale formation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Scale not only affects the drinking experience but may also affect the service life of household water-related appliances.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, water heaters, washing machines, and other appliances that are continuously exposed to water may be affected by scale and mineral deposits.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, TDS is not the only issue with household water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, water in some areas of Guangdong has a relatively low TDS and does not easily form scale. However, in rural areas, stream water collected from mountains can easily become muddy water after heavy rainfall.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Even if the TDS of this water is not particularly high, large amounts of sediment and fine particles can still cause significant damage to household water systems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, for households, whole-house water purification is not only related to drinking water, but also to the long-term use of washing machines, water heaters, water pipes, and other water-related equipment.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. Why Can\u2019t a Water Testing TDS Meter Represent Complete Water Quality Testing?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is the most important issue consumers need to understand when using a water testing tds meter.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A TDS meter actually detects the <strong>electrical conductivity<\/strong> of water and indirectly reflects the level of dissolved substances.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, a TDS meter does not detect any specific pollutant.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In other words:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A water testing tds meter measures a comprehensive numerical value, not whether the water is \u201ctoxic.\u201d<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Even when measuring the total dissolved solids in water, the accuracy of TDS testing itself is not as high as many consumers imagine.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, consumers should not look at a single number on a TDS meter and immediately conclude that \u201cthe water is very clean\u201d or \u201cthe water is contaminated.\u201d<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6. TDS Testing Cannot Detect Toxic Heavy Metals in Water<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">One of the biggest limitations of tds water testing is that <strong>TDS cannot directly indicate whether toxic heavy metals in water exceed the limit<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The toxicity thresholds of toxic heavy metals are very low, and they are also key water quality indicators monitored by water treatment plants.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, the limits for some toxic heavy metals specified by Chinese water quality standards are:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Toxic Heavy Metal<\/th><th>Limit<\/th><\/tr><tr><td>Lead<\/td><td><strong>0.01mg\/L<\/strong><\/td><\/tr><tr><td>Arsenic<\/td><td><strong>0.01mg\/L<\/strong><\/td><\/tr><tr><td>Cadmium<\/td><td><strong>0.005mg\/L<\/strong><\/td><\/tr><tr><td>Hexavalent Chromium<\/td><td><strong>0.05mg\/L<\/strong><\/td><\/tr><tr><td>Mercury<\/td><td><strong>0.0001mg\/L<\/strong><\/td><\/tr><tr><td>Selenium<\/td><td><strong>0.01mg\/L<\/strong><\/td><\/tr><tr><td>Thallium<\/td><td><strong>0.0001mg\/L<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Even if these toxic heavy metals are all present above their limits, their contribution to TDS can still be difficult to exceed <strong>1mg\/L<\/strong>, while their toxicity at that point can already be significant.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, a situation may occur where:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The TDS test result appears normal, but a specific toxic heavy metal in the water has already reached a level that requires attention.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is why tds water testing cannot replace professional water quality testing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If consumers are specifically concerned about lead, arsenic, cadmium, mercury, or other heavy metals, targeted professional testing should be conducted rather than relying on a water testing tds meter.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7. TDS Testing Cannot Detect Bacteria, Viruses, or Parasites<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In addition to heavy metals, a <strong>water testing tds meter cannot detect bacteria, viruses, or parasites in water<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is because microbial contamination is fundamentally different from dissolved solids in water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Even if a glass of water has very low TDS, this does not prove that it contains no bacteria, viruses, or parasites.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Likewise, water with relatively high TDS cannot be judged to contain microbial contamination simply based on its TDS value.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In fact, microbial contamination is also an important concern for drinking water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, for unregulated water sources, professional water quality testing is very important before the water is used as drinking water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>TDS testing can only serve as an auxiliary tool; it cannot replace complete water quality testing.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8. TDS Testing Cannot Detect Pesticide Residues and Certain Trace Organic Pollutants<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Another important limitation of TDS testing is that it cannot accurately reflect certain trace organic pollutants that may exist at very low concentrations but have potentially significant toxicity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Examples include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pesticide residues;<\/li>\n\n\n\n<li>Disinfection by-products;<\/li>\n\n\n\n<li>Certain trace organic pollutants.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Even when the concentration of these substances is low, their contribution to TDS may also be very small. This does not mean that they do not pose potential health concerns.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Low TDS does not mean that there are no pollutants in the water.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>High TDS does not mean that the water is necessarily contaminated.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TDS testing only reflects the overall level of dissolved solids in water and cannot serve as a complete water safety test.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">9. Why Don\u2019t Consumers Usually Need to Worry Excessively About Heavy Metals in Tap Water?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The heavy metals, microorganisms, and certain pollutants mentioned above are all key targets for monitoring and control by municipal water treatment plants.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before tap water leaves the water treatment plant, it undergoes <strong>106 tests<\/strong> and must meet all requirements before being delivered to households.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, for normal municipal tap water, consumers generally do not need to become overly concerned about water safety simply because of a TDS value.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tap water may not reach the level of \u201cpure\u201d water that consumers ideally expect, but under a normal municipal water supply system, its safety is controlled by relevant standards and regulatory systems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If municipal tap water is found to contain excessive heavy metals or other serious problems, the situation is completely different because this would indicate a serious water safety problem within the water supply system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because water treatment plants bear corresponding responsibilities, serious heavy metal contamination of municipal tap water does not normally occur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Water purifiers are mainly products designed to improve household drinking water and living quality rather than replacements for a normal municipal water supply system.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">10. Why Should We Still Pay Attention to Microorganisms in Drinking Water?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For drinking water, microbial contamination is also an important concern.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Heavy metals and other pollutants are subject to strict municipal water supply controls. However, for some water sources without stable supervision, such as groundwater, well water, mountain spring water, and other surface water, contamination by bacteria, viruses, parasites, and other microorganisms may deserve more attention.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is why, for unregulated water sources, we have always recommended:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Before using such water as drinking water, it is best to conduct professional water quality testing.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Compared with simply using a water testing tds meter to judge water quality, professional water quality testing can test specific pollutants and provide more reliable information.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">11. What Is the Relationship Between TDS Water Testing and Water Purifiers?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">It is normal for TDS to change after water is treated by a water purifier.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Traditional water treatment methods, including coagulation, sedimentation, filtration, and disinfection, do not completely change the natural characteristics of water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, with the development of water purification technology, various advanced treatment technologies have emerged.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Some water purification technologies remove contaminants while also removing minerals and trace elements from the original water. Therefore, the TDS value of the treated water decreases.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Among them, RO reverse osmosis has a strong ability to remove dissolved substances from water, so after passing through an RO reverse osmosis water purifier, TDS usually decreases significantly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ultrafiltration membranes work differently.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ultrafiltration mainly relies on membrane pore size to retain particles, colloids, and certain microorganisms in water. Its ability to remove dissolved minerals is significantly different from that of RO reverse osmosis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, <strong>the filtration performance of a water purifier cannot be judged simply by how much the TDS decreases.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Different water purification technologies solve different water quality problems.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">12. Whole-House Water Purification Cannot Focus Only on TDS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If a household uses normal municipal tap water, TDS may not be the most important issue.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, if the household uses groundwater, mountain spring water, well water, or other water sources without stable supervision, sediment, particles, bacteria, viruses, and other problems need to be considered comprehensively.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, rural mountain spring water and stream water can easily become muddy water under certain weather conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In such cases, the first issue that whole-house water purification needs to solve may not be TDS, but large amounts of particulate matter in the water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At present, different filtration technologies have different characteristics for whole-house water purification.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Traditional stainless-steel mesh pre-filters and PP laminated pre-filters have relatively low filtration precision and limited ability to filter fine particles in water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">PP cotton big blue filter cartridges have higher filtration precision, but their ability to filter extremely fine particles in water is still limited. Moreover, if they are not properly maintained or replaced after long-term use, they may become a secondary source of contamination.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For highly turbid water sources, this secondary contamination problem may become even more significant.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">13. External-Pressure Micro-Ultrafiltration Membrane: Designed for Muddy Water and Fine Particles<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The filtration precision of an external-pressure micro-ultrafiltration membrane reaches <strong>0.1 microns<\/strong>, which can effectively intercept fine particulate matter in water. Therefore, it is also known as the <strong>\u201cmuddy water killer.\u201d<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It should be noted that a 0.1-micron external-pressure micro-ultrafiltration membrane mainly addresses particulate matter and other issues and should not be equated with complete removal of all bacteria and viruses.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One important advantage is that the filter element can be manually washed regularly, which can reduce the accumulation of contaminants in the filter element during long-term use while also providing a relatively long service life.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The external-pressure micro-ultrafiltration filter element from ChengrongTimes comes with a <strong>5-year warranty<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For household water sources such as rural mountain spring water, stream water, and water containing large amounts of particulate matter, this filtration technology is highly targeted.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">14. Internal-Pressure Ultrafiltration Membrane: 0.01-Micron Filtration Precision<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Compared with external-pressure micro-ultrafiltration membranes, internal-pressure ultrafiltration membranes have higher filtration precision, reaching <strong>0.01 microns<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In addition to particulate matter in water, a 0.01-micron ultrafiltration membrane can also target bacteria, viruses, and other microorganisms for retention.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For households that place a very high value on quality of life and want to reduce the need for daily filter maintenance, internal-pressure ultrafiltration can be one option for whole-house water purification.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, when choosing a whole-house water purification system, the question should not simply be:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u201cWhat is the TDS value?\u201d<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Instead, the first question should be:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u201cWhat problems actually exist in the household water source?\u201d<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Is it sediment?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Turbidity?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Scale?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Microorganisms?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Or dissolved pollutants?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Only after identifying the actual problem can the appropriate water purification technology be selected.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">15. What Problems Does the ChengrongTimes Mineral-Like Water Purifier Mainly Solve?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The ChengrongTimes mineral-like water purifier mainly focuses on microbial and other issues in household drinking water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>chlorine-removing ultrafiltration membrane<\/strong> developed exclusively by the ChengrongTimes ultrafiltration factory has a filtration precision of up to <strong>0.01 microns<\/strong> and can remove <strong>99.99% of bacteria, viruses, and residual chlorine in water<\/strong>, while retaining minerals and trace elements in the water, thereby allowing the produced purified water to reach a mineral-like water standard.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Compared with RO reverse osmosis, ultrafiltration can retain essential minerals and trace elements in water, making it more suitable for some consumers who prefer to drink water containing minerals.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Of course, different households have different water sources and different purification needs, so it is still recommended to understand the original water quality before choosing a water purifier.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">16. What Is the Difference Between a True Ultrafiltration Membrane and a PS Membrane?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Some products marketed as ultrafiltration products on the market do not actually use genuine ultrafiltration membranes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, PS membranes cannot effectively filter bacteria, viruses, and residual chlorine in water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Products using PS membranes may make water cleaner than the original tap water, but their filtration capabilities are different from those of genuine ultrafiltration membranes, and it cannot simply be assumed that the water they produce can meet the standards for mineral-like drinking water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, when choosing an ultrafiltration water purifier, consumers should not only look at the word \u201cultrafiltration\u201d in product marketing. They should also pay attention to the actual membrane material, membrane pore size, and filtration capabilities.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">17. Is a Water Testing TDS Meter Useful?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Yes, but it must be used correctly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>water testing tds meter is suitable for quickly and simply monitoring changes in water quality<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, it can be used to:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Compare the TDS changes between raw water and RO purified water;<\/li>\n\n\n\n<li>Observe TDS differences between different water sources;<\/li>\n\n\n\n<li>Observe changes in dissolved substances before and after water purification;<\/li>\n\n\n\n<li>Monitor whether household water TDS changes significantly over time;<\/li>\n\n\n\n<li>Serve as an auxiliary reference for further water quality testing.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">However, a water testing tds meter cannot directly determine:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Whether bacteria are present in the water;<\/li>\n\n\n\n<li>Whether viruses are present in the water;<\/li>\n\n\n\n<li>Whether parasites are present in the water;<\/li>\n\n\n\n<li>Whether lead exceeds the limit;<\/li>\n\n\n\n<li>Whether arsenic exceeds the limit;<\/li>\n\n\n\n<li>Whether cadmium exceeds the limit;<\/li>\n\n\n\n<li>Whether mercury exceeds the limit;<\/li>\n\n\n\n<li>Whether pesticide residues exceed the limit;<\/li>\n\n\n\n<li>Whether disinfection by-products exceed the limit.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, <strong>TDS testing is an auxiliary water quality testing tool, not a complete water quality testing method.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">18. Why Should Unregulated Water Sources Be Professionally Tested?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you use municipal tap water, you can refer to water quality information provided by local water supply authorities.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, if you use:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Well water, groundwater, mountain spring water, stream water, or other water sources without stable supervision,<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">you should not simply rely on a water testing tds meter to determine water quality.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TDS testing cannot detect bacteria, viruses, or parasites, nor can it determine whether toxic heavy metals or certain trace organic pollutants exceed their limits.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, we always recommend:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>For unregulated water sources, professional water quality testing should preferably be conducted before the water is used as drinking water.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Professional water quality testing provides more meaningful information than simply relying on a single number from a TDS meter, and it is far more reliable than online fear-based marketing based solely on high or low TDS values.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">19. The Correct Answer About TDS Water Testing<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you only remember one thing, remember this:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>TDS water testing measures the overall level of total dissolved solids in water; it is not a complete water safety test.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">TDS mainly reflects dissolved minerals and other dissolved solids in water.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>High TDS does not necessarily mean poor water quality.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Low TDS does not mean that water is necessarily safe.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A water testing tds meter cannot detect bacteria, viruses, or parasites.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A water testing tds meter cannot directly determine whether toxic heavy metals exceed their limits.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A water testing tds meter cannot determine whether pesticide residues, disinfection by-products, or certain trace organic pollutants exceed their limits.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When the goal is to determine whether drinking water is safe, professional water quality testing should be conducted according to the water source.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When choosing a water purifier, consumers should also not simply pursue the lowest possible TDS. Instead, they should select appropriate water purification technology according to the actual water quality of the household.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">20. Conclusion: Don\u2019t Judge the Entire Water Quality by One TDS Number<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">TDS testing is popular among consumers because it is simple, fast, and inexpensive.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, <strong>simple does not mean it can do everything<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TDS testing can tell us about overall changes in dissolved solids in water, but it cannot tell us whether water contains bacteria, viruses, parasites, toxic heavy metals, or certain trace organic pollutants.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Therefore, the correct approach to drinking water safety is:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Understand the water source \u2192 Conduct water quality testing \u2192 Identify the actual water quality problems \u2192 Choose targeted water purification technology.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For municipal tap water, TDS testing can be used as a daily reference. For groundwater, well water, mountain spring water, stream water, and other unregulated water sources, professional water quality testing is even more important.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ChengrongTimes focuses on ultrafiltration water purification technology and provides targeted water purification solutions for different household water sources.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Chengrong Ultrafiltration, No More Concerns for Customers.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>No Rust for 10 Years<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>No Water Leakage for 10 Years<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>10 Years of After-Sales Service<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/www.chengrongtimes.com\/\">ChengrongTimes Water Purifiers<\/a> \u2014 Never Compromise on Quality.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Many consumers have purchased a water testing tds meter. The main reason for buying a TDS meter is to quickly determine whether the water at home is of good quality through a simple test result. However, in reality, TDS testing and complete water quality testing are two completely different concepts. TDS can help us quickly [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1010","post","type-post","status-publish","format-standard","hentry","category-factory-diary"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Many consumers have purchased a water testing tds meter. The main reason for buying a TDS meter is to quickly determine whether the water at home is of good quality through a simple test result. 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