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2. Maximum contaminant level - Wikipedia

   en.wikipedia.org/wiki/Maximum_Contaminant_Level

   Maximum contaminant levels ( MCLs) are standards that are set by the United States Environmental Protection Agency (EPA) for drinking water quality. [1] [2] An MCL is the legal threshold limit on the amount of a substance that is allowed in public water systems under the Safe Drinking Water Act (SDWA). The limit is usually expressed as a ...

3. Hard water - Wikipedia

   en.wikipedia.org/wiki/Hard_water

   Hard water is water that has a high mineral content (in contrast with "soft water"). Hard water is formed when water percolates through deposits of limestone, chalk or gypsum, [1] which are largely made up of calcium and magnesium carbonates, bicarbonates and sulfates . Drinking hard water may have moderate health benefits.

4. Drinking water quality standards - Wikipedia

   en.wikipedia.org/wiki/Drinking_water_quality...

   Drinking water quality standards in Australia have been developed by the Australian Government National Health and Medical Research Council (NHMRC) in the form of the Australian Drinking Water Guidelines. [8] These guidelines provide contaminant limits (pathogen, aesthetic, organic, inorganic, and radiological) as well as guidance on applying ...

5. What Doctors Want You to Know About Drinking Water to ... - AOL

   www.aol.com/doctors-want-know-drinking-water...

   Doctors explain if drinking water lowers blood pressure, and the role dehydration plays in high blood pressure. Plus, ways to lower BP naturally.

6. Total dissolved solids - Wikipedia

   en.wikipedia.org/wiki/Total_dissolved_solids

   Total dissolved solids ( TDS) is a measure of the dissolved combined content of all inorganic and organic substances present in a liquid in molecular, ionized, or micro-granular ( colloidal sol) suspended form. TDS are often measured in parts per million (ppm). TDS in water can be measured using a digital meter.

7. Alkalinity - Wikipedia

   en.wikipedia.org/wiki/Alkalinity

   Alkalinity (from Arabic: القلوية, romanized: al-qaly, lit. 'ashes of the saltwort') is the capacity of water to resist acidification. It should not be confused with basicity, which is an absolute measurement on the pH scale. Alkalinity is the strength of a buffer solution composed of weak acids and their conjugate bases.

8. EPA sets new, strict limits on forever chemicals in drinking ...

   www.aol.com/epa-sets-strict-limits-forever...

   That’s 4,100 to 6,700 utilities that will likely need to build new filters or find new drinking water sources to bring levels down. Utilities will have three years to test their drinking water ...

9. Magnesium hydroxide - Wikipedia

   en.wikipedia.org/wiki/Magnesium_hydroxide

   Magnesium hydroxide is an inorganic compound with the chemical formula Mg(OH) 2. It occurs in nature as the mineral brucite. It is a white solid with low solubility in water (K sp = 5.61 × 10 −12). [5] Magnesium hydroxide is a common component of antacids, such as milk of magnesia.