This is a great question: what are total dissolved solids that are in your drinking water or water? Even if you run a total dissolved solids test, you still do not know what the actual dissolved solids are and having total dissolved solids in your water is not good or bad. The dissolved solids in the water are the mineral content of the water. Absolutely pure water with virtually no dissolved solids, like deionized water, taste flat, can be acidic, i.e., low pH about 5.5, and the long-term consumption of absolutely pure water may cause acidosis (Source). In addition, if you run deionized water through your standard metal piping or standard metal fixtures - guess what: "Corrosion" and elevated metals in the water. Now if you have gone to the ocean and accidentally drank some seawater, this is water with a very high total dissolved solids. The water has a salty taste, actually makes you more dehydrated, and, with long-term consumption, you get sick and then die. So where is the sweet spot?
Water is a good solvent and picks up impurities easily. Pure water -- tasteless, colorless, and odorless -- is often called the universal solvent. "Dissolved solids" refer to any minerals, salts, metals, cations or anions dissolved in water. Total dissolved solids (TDS) comprise inorganic salts, principally calcium, magnesium, potassium, sodium, bicarbonates, chlorides, and sulfates and some small amounts of organic matter that are dissolved in water.
TDS in drinking-water originate from natural sources, sewage, urban run-off, industrial wastewater, and chemicals used in the water treatment process, and the nature of the piping or hardware used to convey the water, i.e., the plumbing. In the United States, elevated TDS has been due to natural environmental features such as mineral springs, carbonate deposits, salt deposits, and sea water intrusion, but other sources may include: salts used for road de-icing, anti-skid materials, drinking water treatment chemicals, stormwater, and agricultural runoff, as well as point/non-point wastewater discharges.
In general, the total dissolved solids concentration is the sum of the cations (positively charged) and anions (negatively charged) ions in the water. Therefore, the total dissolved solids test provides a qualitative measure of the amount of dissolved ions but does not tell us the nature or ion relationships. In addition, the test does not provide us insight into the specific water quality issues such as hardness, salty taste, staining, odors, corrosiveness, or the presence of trace metals and microbiological contaminants. Therefore, the total dissolved solids test is used as an indicator test to determine the general quality of the water. The sources of total dissolved solids can include all of the dissolved cations and anions, but the following table can be used as a generalization of the relationship of TDS to water quality problems:
Total dissolved solids can also be used as a rough check on the accuracy and completeness of a comprehensive test of individual ions. Ideally, total dissolved solids should equal the sum of the individual ions. If there is a big discrepancy, it would suggest that some significant ion was not measured or there was a mistake in the calculation of the amount of something.
Total Dissolved Solids becomes a problem when it becomes a nuisance. If the total dissolved solids are too low, it is possible that the water may be corrosive to metal piping and fixtures and therefore have a bitter or off-taste because of corrosion byproducts. This may also mean the water could have elevated levels of trace metals either leached from the piping in the home or from the aquifer. If the total dissolved solids are extremely high, the water would have a salty taste, greatly corrode the metal piping in your home, and cause the premature failure of appliances.
An elevated total dissolved solids (TDS) concentration is not a health hazard. The TDS concentration is a secondary drinking water standard and, therefore, is regulated because it is more of an aesthetic rather than a health hazard.
An elevated TDS indicates the following:
The measurement of total dissolved solids does not indicate that there is specific health risk or threat, but it can be used to provide insight into the status or the water over time and as a warning sign of a potential problem. Typically, we recommend water users to get a comprehensive initial test that should include a number of parameters including the total dissolved solids of the water and the conductivity of the water. Conductivity and total dissolved solids are indirectly related, but these are two tools to track the change of your water quality with time. In general, a TDS of less than 50 mg/L should raise a concern for a potential corrosion problem, a TDS of over 250 mg/L should raise a concern about the hardness, iron, manganese, alkalinity, chloride, sulfate, nitrate, and general salt content, and over 500 mg/L should raise a concern about other salts (bromide, lithium, aluminum, other metals, and the scale forming potential of the water). A total dissolved solids over 1000 mg/L should raise a concern about the potential for a man-made direct impact or a saline water impact to the source.
(Source, Lehr,J. et al., 1980)- "Domestic Water Treatment, New York, NY: McGraw-Hill Book Company.)
For aesthetic reasons, the EPA has set a secondary drinking water standard of < 500 mg/L (milligrams per liter) . Some states have established this as a drinking water standard.
Unlike many contaminants, there are warning signs that there may be a problem with your drinking water associated or caused by having to little or too much stuff in your water. Yes Stuff- the total dissolved solids test does not tell you what the stuff is, but if you link your observations with some at-home water testing or screening, informational testing, or commercial certified testing you can identify this stuff, develop a plan to create a cost effective solution, and implement a solution that protects yourself, your family, your home, and the systems in your home.
Level 1 Testing is done with simple observations that an individual can make with their own senses such as sight, smell, and taste. These observations can be readily apparent or can be observed as they change over time. In addition, accessible related information about the home can also be used to narrow down the cause of your water issues.
There are a number of ways to determine if you may have an elevated level of total dissolved solids in your water. To determine this you will need to use your senses.
Level 2 Testing is Do-It-Yourself testing that can be done in your own home using a Testing Kit. After you’ve done Level 1 Testing, Level 2 Testing can confirm if your observations are correct. If your test results reveal the presence of a contaminant that is cause for concern, you can either proceed to determine the best treatment (see below) or continue to Level 3 Testing.
The total dissolved solids concentration can be related to the conductivity of the water, but the relationship is not a constant. The relationship between total dissolved solids and conductivity is a function of the type and nature of the dissolved cations and anions in the water and possibly the nature of any suspended materials. For example, a NaCl solution and KCl solution with a conductivity of 10000 umhos/cm will not have the same concentration of NaCl or KCl and they will have a different total dissolved solids concentration. Conductivity is measured through the use of a meter and is usually about 100 times the total cations or anions expressed as equivalents and the total dissolved solids (TDS) in ppm usually ranges from 0.5 to 1.0 times the electrical conductivity. (Graph) Conductivity is the ability of water to carry a charge, which is a function of the amount and type of ions dissolved in the water.
Total Dissolved Solids can be measured in the field using an electronic pen. Many of these devices actually measure the conductivity of the water, i.e., the ability of the water to carry a charge, and not the actual total dissolved solids. These devices then calculate the total dissolved solids assuming that the primary dissolved minerals are either a combination of NaCl or KCl. Therefore, the measurement of total dissolved solids by these devices are not an accurate measure, but an approximation. If you are thinking of using these devices for a project, we would recommend purchasing a conductivity pen which measures the conductivity of the water and getting a laboratory test done to KNOW the ratio of TDS to Conductivity that should be used as a correction factor.
<div class="product-note in-L6-benzene">Note: If the concentration is < 0.005 mg/L (POU Device) </div>
<div class="product-note in-L6-carbon-tetrachloride">Note: If the concentration is < 0.004 mg/L (POU Device)</div>
<div class="product-note in-L6-chloroform-trichloromethane">Note: If the concentration of trihalomethanes is < 0.08 mg/L (POU Device)</div>
<div class="product-note in-L6-ethylbenzene">Note: If the concentration is < 0.03 mg/L (POU Device)</div>
<div class="product-note in-L6-methylene-chloride-dichloromethane-dcm">Note: If the concentration is < 0.005 mg/L (POU Device)</div>
<div class="product-note in-L6-mtbe-methyl-tert-butyl-ether">Note: If the concentration is < 0.07 mg/L (POU Device)</div>
<div class="product-note in-L6-tetrachloroethylene">Note: If the concentration is < 0.005 mg/L (POU Device)</div>
<div class="product-note in-L6-toluene">Note: If the concentration is less than 0.8 mg/L</div>
<div class="product-note in-L6-xylenes">Note: If the concentration is < 1.0 mg/L (POU Device)</div>
<div class="product-note in-L6-atrazine">Note: If the concentration is < 0.001 mg/L (POU Device)</div>
<div class="product-note in-L6-alachlor">Note: If the concentration is < 0.002 mg/L (POU Device)</div>
<div class="product-note in-L6-glyphosate">Note: If the concentration is < 0.7 mg/L (POU Device)</div>
<div class="product-note in-L6-2-4-d">Note: If the concentration is < 0.07 mg/L (POU Device)</div>
<div class="product-note in-L6-bis-2-ethylhexyl-phthalate">Note: If the concentration is < 0.006 mg/L (POU Device)</div>
<div class="product-note in-L6-trihalomethanes">Note: If the concentration is < 0.08 mg/L (POU Device)</div>
<div class="product-note in-L6-haloacetic-acids">Note: If the concentration is < 0.06 mg/L (POU Device)</div>
<div class="product-note in-L6-chlorite">Note: If the concentration is < 0.8 mg/L (POU Device)</div>
<div class="product-note in-L6-gross-alpha">Note: Temporary Solution: If the concentration of alpha is < 5 pCi/L (POU Device)</div>
<div class="product-note in-L6-beta-particles">Note: Temporary Solution: If the concentration is < 4 millirems/year (POU Device)</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: Temporary Solution: If combined concentration is less than 5 pCi/L and alpha, beta, and uranium are below drinking water limit (POU Device)</div>
<div class="product-note in-L6-total-dissolved-solids">Note: Consider this treatment If the problem appears to be related to a metal or hardness.</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: If the concentration of combined radium is < 5 pCi/L, alpha and beta are low, and radon less than 300 pCi/L - (POU Device)</div>
<div class="product-note in-L6-cyanide">Note: Note: For cyanide levels that are less than 0.1 mg/L</div>
<div class="product-note in-L6-total-dissolved-solids">Note: Consider this treatment If the problem appears to be related to chloride or sodium.</div>
<div class="product-note in-L6-beta-particles">Note: If the beta dosage equivalent is < 4 millirems/year and Radium 226 + Radium 228 is < 5 pCi/L - (POE Device)</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: If combined radium concentration is < 5 pCi/L and alpha, beta, uranium, and radon are low - (POE Device)</div>
<div class="product-note in-L6-benzene">Note: If the concentration is < 0.005 mg/L (POU Device) </div>
<div class="product-note in-L6-carbon-tetrachloride">Note: If the concentration is < 0.004 mg/L (POU Device)</div>
<div class="product-note in-L6-chloroform-trichloromethane">Note: If the concentration of trihalomethanes is < 0.08 mg/L (POU Device)</div>
<div class="product-note in-L6-ethylbenzene">Note: If the concentration is < 0.03 mg/L (POU Device)</div>
<div class="product-note in-L6-methylene-chloride-dichloromethane-dcm">Note: If the concentration is < 0.005 mg/L (POU Device)</div>
<div class="product-note in-L6-mtbe-methyl-tert-butyl-ether">Note: If the concentration is < 0.07 mg/L (POU Device)</div>
<div class="product-note in-L6-tetrachloroethylene">Note: If the concentration is < 0.005 mg/L (POU Device)</div>
<div class="product-note in-L6-toluene">Note: If the concentration is less than 0.8 mg/L</div>
<div class="product-note in-L6-xylenes">Note: If the concentration is < 1.0 mg/L (POU Device)</div>
<div class="product-note in-L6-atrazine">Note: If the concentration is < 0.001 mg/L (POU Device)</div>
<div class="product-note in-L6-alachlor">Note: If the concentration is < 0.002 mg/L (POU Device)</div>
<div class="product-note in-L6-glyphosate">Note: If the concentration is < 0.7 mg/L (POU Device)</div>
<div class="product-note in-L6-2-4-d">Note: If the concentration is < 0.07 mg/L (POU Device)</div>
<div class="product-note in-L6-bis-2-ethylhexyl-phthalate">Note: If the concentration is < 0.006 mg/L (POU Device)</div>
<div class="product-note in-L6-trihalomethanes">Note: If the concentration is < 0.08 mg/L (POU Device)</div>
<div class="product-note in-L6-haloacetic-acids">Note: If the concentration is < 0.06 mg/L (POU Device)</div>
<div class="product-note in-L6-chlorite">Note: If the concentration is < 0.8 mg/L (POU Device)</div>
<div class="product-note in-L6-gross-alpha">Note: Temporary Solution: If the concentration of alpha is < 5 pCi/L (POU Device)</div>
<div class="product-note in-L6-beta-particles">Note: Temporary Solution: If the concentration is < 4 millirems/year (POU Device)</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: Temporary Solution: If combined concentration is less than 5 pCi/L and alpha, beta, and uranium are below drinking water limit (POU Device)</div>
<div class="product-note in-L6-total-dissolved-solids">Note: Consider this treatment If the problem appears to be related to a metal or hardness.</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: If the concentration of combined radium is < 5 pCi/L, alpha and beta are low, and radon less than 300 pCi/L - (POU Device)</div>
<div class="product-note in-L6-cyanide">Note: Note: For cyanide levels that are less than 0.1 mg/L</div>
<div class="product-note in-L6-total-dissolved-solids">Note: Consider this treatment If the problem appears to be related to chloride or sodium.</div>
<div class="product-note in-L6-beta-particles">Note: If the beta dosage equivalent is < 4 millirems/year and Radium 226 + Radium 228 is < 5 pCi/L - (POE Device)</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: If combined radium concentration is < 5 pCi/L and alpha, beta, uranium, and radon are low - (POE Device)</div>
Level 3 Testing is done through an accredited Water Testing Laboratory. With Level 3 Testing, you can order a testing kit that is used to prepare your sample and submit it to the lab. By utilizing a lab, you have the assurance that a certified water expert had analyzed your water sample. If your test results reveal the presence of a contaminant that is cause for concern, you can either proceed to determine the best treatment options (see below) or continue to Level 4 Testing - Certified Testing.
Most informational water quality tests included a total dissolved solid test, but to really understand the nature of the problem the test should include a wide range of the cations, i.e., positively charged ions, and anions, negatively charged ions, that could be contributing to your problem. If you select a test that just says the total dissolved solids are 750 mg/L, you know the total amount of stuff dissolved in the water is 750 mg of solids for each liter, but you have no idea of the chemical nature of the solids, sodium, chloride, lead, calcium, arsenic, iron, manganese or something else. If you are looking for a basic well water or city water assessment, we recommend the appropriate National Testing Labs packages. If you are looking for a very comprehensive analysis, we recommend the Tap Score packages and if you are concerned about corrosion and lead we recommend the National Testing Labs Corrosion Check package. If you are considering the installation of a reverse osmosis unit, we recommend the complete reverse osmosis screen.
<div class="product-note in-L6-benzene">Note: If the concentration is < 0.005 mg/L (POU Device) </div>
<div class="product-note in-L6-carbon-tetrachloride">Note: If the concentration is < 0.004 mg/L (POU Device)</div>
<div class="product-note in-L6-chloroform-trichloromethane">Note: If the concentration of trihalomethanes is < 0.08 mg/L (POU Device)</div>
<div class="product-note in-L6-ethylbenzene">Note: If the concentration is < 0.03 mg/L (POU Device)</div>
<div class="product-note in-L6-methylene-chloride-dichloromethane-dcm">Note: If the concentration is < 0.005 mg/L (POU Device)</div>
<div class="product-note in-L6-mtbe-methyl-tert-butyl-ether">Note: If the concentration is < 0.07 mg/L (POU Device)</div>
<div class="product-note in-L6-tetrachloroethylene">Note: If the concentration is < 0.005 mg/L (POU Device)</div>
<div class="product-note in-L6-toluene">Note: If the concentration is less than 0.8 mg/L</div>
<div class="product-note in-L6-xylenes">Note: If the concentration is < 1.0 mg/L (POU Device)</div>
<div class="product-note in-L6-atrazine">Note: If the concentration is < 0.001 mg/L (POU Device)</div>
<div class="product-note in-L6-alachlor">Note: If the concentration is < 0.002 mg/L (POU Device)</div>
<div class="product-note in-L6-glyphosate">Note: If the concentration is < 0.7 mg/L (POU Device)</div>
<div class="product-note in-L6-2-4-d">Note: If the concentration is < 0.07 mg/L (POU Device)</div>
<div class="product-note in-L6-bis-2-ethylhexyl-phthalate">Note: If the concentration is < 0.006 mg/L (POU Device)</div>
<div class="product-note in-L6-trihalomethanes">Note: If the concentration is < 0.08 mg/L (POU Device)</div>
<div class="product-note in-L6-haloacetic-acids">Note: If the concentration is < 0.06 mg/L (POU Device)</div>
<div class="product-note in-L6-chlorite">Note: If the concentration is < 0.8 mg/L (POU Device)</div>
<div class="product-note in-L6-gross-alpha">Note: Temporary Solution: If the concentration of alpha is < 5 pCi/L (POU Device)</div>
<div class="product-note in-L6-beta-particles">Note: Temporary Solution: If the concentration is < 4 millirems/year (POU Device)</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: Temporary Solution: If combined concentration is less than 5 pCi/L and alpha, beta, and uranium are below drinking water limit (POU Device)</div>
<div class="product-note in-L6-total-dissolved-solids">Note: Consider this treatment If the problem appears to be related to a metal or hardness.</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: If the concentration of combined radium is < 5 pCi/L, alpha and beta are low, and radon less than 300 pCi/L - (POU Device)</div>
<div class="product-note in-L6-cyanide">Note: Note: For cyanide levels that are less than 0.1 mg/L</div>
<div class="product-note in-L6-total-dissolved-solids">Note: Consider this treatment If the problem appears to be related to chloride or sodium.</div>
<div class="product-note in-L6-beta-particles">Note: If the beta dosage equivalent is < 4 millirems/year and Radium 226 + Radium 228 is < 5 pCi/L - (POE Device)</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: If combined radium concentration is < 5 pCi/L and alpha, beta, uranium, and radon are low - (POE Device)</div>
A Level 4 Certified Test Test uses chain-of-custody with a water professional coming to your home to prepare the water sample and then works with an accredited laboratory in order to certify your test results. This type of testing not only gives you the highest level of assurance in the accuracy of your test results, but can also be used as a document in legal cases. For Baseline Testing, we recommend that you use Certified Testing.
In most cases a project that needs certified testing for total dissolved solids will likely need to conduct testing for the specific cations and anions that are contributing to the total dissolved solids concentration of the water. In some cases, it may be possible to predict which ions are more likely the problem based on your diagnostic analysis and the hazardous activity or event that may have contributed to this issue. If the level of total dissolved solids seems elevated and you are on a private water system, we recommend ordering a Neighborhood Environmental Report. If you are on city water we recommend reviewing your systems Consumer Confidence Report. If you need assistance, please contact our team.
In general, you do not treat water to reduce or eliminate a total dissolved solids problem with the water. The level of total dissolved solids in the water does not always give you any information about the hardness, metal content, or salt content, and it tells you nothing about the bacterial quality of your drinking water. The only way to effectively treat or deal with a concern about total dissolved solids is to know the source and the cause of the contamination. This can only be done by getting a comprehensive water quality test.
After you have completed a comprehensive water quality test you can determine if the total dissolved solids is simply associated with a nuisance or an aesthetic problem or if it is associated with a health concern. If it is an aesthetic problem, do not boil the water - this can make the situation worse. Filtering the water through a particle filter will not help, but in some cases a point-of-use filter will reduce the mineral content of the water. The other option would be to provide an alternative potable water source.
<div class="product-note in-L6-benzene">Note: If the concentration is < 0.005 mg/L (POU Device) </div>
<div class="product-note in-L6-carbon-tetrachloride">Note: If the concentration is < 0.004 mg/L (POU Device)</div>
<div class="product-note in-L6-chloroform-trichloromethane">Note: If the concentration of trihalomethanes is < 0.08 mg/L (POU Device)</div>
<div class="product-note in-L6-ethylbenzene">Note: If the concentration is < 0.03 mg/L (POU Device)</div>
<div class="product-note in-L6-methylene-chloride-dichloromethane-dcm">Note: If the concentration is < 0.005 mg/L (POU Device)</div>
<div class="product-note in-L6-mtbe-methyl-tert-butyl-ether">Note: If the concentration is < 0.07 mg/L (POU Device)</div>
<div class="product-note in-L6-tetrachloroethylene">Note: If the concentration is < 0.005 mg/L (POU Device)</div>
<div class="product-note in-L6-toluene">Note: If the concentration is less than 0.8 mg/L</div>
<div class="product-note in-L6-xylenes">Note: If the concentration is < 1.0 mg/L (POU Device)</div>
<div class="product-note in-L6-atrazine">Note: If the concentration is < 0.001 mg/L (POU Device)</div>
<div class="product-note in-L6-alachlor">Note: If the concentration is < 0.002 mg/L (POU Device)</div>
<div class="product-note in-L6-glyphosate">Note: If the concentration is < 0.7 mg/L (POU Device)</div>
<div class="product-note in-L6-2-4-d">Note: If the concentration is < 0.07 mg/L (POU Device)</div>
<div class="product-note in-L6-bis-2-ethylhexyl-phthalate">Note: If the concentration is < 0.006 mg/L (POU Device)</div>
<div class="product-note in-L6-trihalomethanes">Note: If the concentration is < 0.08 mg/L (POU Device)</div>
<div class="product-note in-L6-haloacetic-acids">Note: If the concentration is < 0.06 mg/L (POU Device)</div>
<div class="product-note in-L6-chlorite">Note: If the concentration is < 0.8 mg/L (POU Device)</div>
<div class="product-note in-L6-gross-alpha">Note: Temporary Solution: If the concentration of alpha is < 5 pCi/L (POU Device)</div>
<div class="product-note in-L6-beta-particles">Note: Temporary Solution: If the concentration is < 4 millirems/year (POU Device)</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: Temporary Solution: If combined concentration is less than 5 pCi/L and alpha, beta, and uranium are below drinking water limit (POU Device)</div>
<div class="product-note in-L6-total-dissolved-solids">Note: Consider this treatment If the problem appears to be related to a metal or hardness.</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: If the concentration of combined radium is < 5 pCi/L, alpha and beta are low, and radon less than 300 pCi/L - (POU Device)</div>
<div class="product-note in-L6-cyanide">Note: Note: For cyanide levels that are less than 0.1 mg/L</div>
<div class="product-note in-L6-total-dissolved-solids">Note: Consider this treatment If the problem appears to be related to chloride or sodium.</div>
<div class="product-note in-L6-beta-particles">Note: If the beta dosage equivalent is < 4 millirems/year and Radium 226 + Radium 228 is < 5 pCi/L - (POE Device)</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: If combined radium concentration is < 5 pCi/L and alpha, beta, uranium, and radon are low - (POE Device)</div>
Not sure or need assistance, Submit a Request for Consultation with the KnowYourH20 Team. Contact Us
In the long-term, the only way to develop a solution is to determine the cause and/or the source of the contamination. If the source can be eliminated this should be done and the water source reevaluated. If the source of the contamination is natural or it can not be remediated, then one good option is to install a whole-house water treatment system that may include a series of point-of-use devices. The selection of the proper system depends on the cause of the problem, but these systems can include: neutralization systems for corrosive water, oxidation filtration systems for iron/manganese, custom ion exchange systems for nitrate and sulfate, and reverse osmosis units for other salts.
For most systems with high total dissolved solids, we recommend working with a local professional.
<div class="product-note in-L6-benzene">Note: If the concentration is < 0.005 mg/L (POU Device) </div>
<div class="product-note in-L6-carbon-tetrachloride">Note: If the concentration is < 0.004 mg/L (POU Device)</div>
<div class="product-note in-L6-chloroform-trichloromethane">Note: If the concentration of trihalomethanes is < 0.08 mg/L (POU Device)</div>
<div class="product-note in-L6-ethylbenzene">Note: If the concentration is < 0.03 mg/L (POU Device)</div>
<div class="product-note in-L6-methylene-chloride-dichloromethane-dcm">Note: If the concentration is < 0.005 mg/L (POU Device)</div>
<div class="product-note in-L6-mtbe-methyl-tert-butyl-ether">Note: If the concentration is < 0.07 mg/L (POU Device)</div>
<div class="product-note in-L6-tetrachloroethylene">Note: If the concentration is < 0.005 mg/L (POU Device)</div>
<div class="product-note in-L6-toluene">Note: If the concentration is less than 0.8 mg/L</div>
<div class="product-note in-L6-xylenes">Note: If the concentration is < 1.0 mg/L (POU Device)</div>
<div class="product-note in-L6-atrazine">Note: If the concentration is < 0.001 mg/L (POU Device)</div>
<div class="product-note in-L6-alachlor">Note: If the concentration is < 0.002 mg/L (POU Device)</div>
<div class="product-note in-L6-glyphosate">Note: If the concentration is < 0.7 mg/L (POU Device)</div>
<div class="product-note in-L6-2-4-d">Note: If the concentration is < 0.07 mg/L (POU Device)</div>
<div class="product-note in-L6-bis-2-ethylhexyl-phthalate">Note: If the concentration is < 0.006 mg/L (POU Device)</div>
<div class="product-note in-L6-trihalomethanes">Note: If the concentration is < 0.08 mg/L (POU Device)</div>
<div class="product-note in-L6-haloacetic-acids">Note: If the concentration is < 0.06 mg/L (POU Device)</div>
<div class="product-note in-L6-chlorite">Note: If the concentration is < 0.8 mg/L (POU Device)</div>
<div class="product-note in-L6-gross-alpha">Note: Temporary Solution: If the concentration of alpha is < 5 pCi/L (POU Device)</div>
<div class="product-note in-L6-beta-particles">Note: Temporary Solution: If the concentration is < 4 millirems/year (POU Device)</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: Temporary Solution: If combined concentration is less than 5 pCi/L and alpha, beta, and uranium are below drinking water limit (POU Device)</div>
<div class="product-note in-L6-total-dissolved-solids">Note: Consider this treatment If the problem appears to be related to a metal or hardness.</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: If the concentration of combined radium is < 5 pCi/L, alpha and beta are low, and radon less than 300 pCi/L - (POU Device)</div>
<div class="product-note in-L6-cyanide">Note: Note: For cyanide levels that are less than 0.1 mg/L</div>
<div class="product-note in-L6-total-dissolved-solids">Note: Consider this treatment If the problem appears to be related to chloride or sodium.</div>
<div class="product-note in-L6-beta-particles">Note: If the beta dosage equivalent is < 4 millirems/year and Radium 226 + Radium 228 is < 5 pCi/L - (POE Device)</div>
<div class="product-note in-L6-radium-226-and-radium-228">Note: If combined radium concentration is < 5 pCi/L and alpha, beta, uranium, and radon are low - (POE Device)</div>
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