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2. The 10 Best Drinking Water Test Kits You Can Order Online - AOL

   www.aol.com/news/7-best-drinking-water-test...

   Quickly and easily test for commonly found pollutants like lead and copper in your home’s drinking water.

3. This Common Water Problem Might Be Making Your Home Dirtier - AOL

   www.aol.com/common-water-problem-might-making...

   Hard water: 121-180 mg/L. Very hard water: Over 180 mg/L. The highest mineral levels are found in the Midwest and Rocky Mountain areas; however, there are hard water pockets in ground wells from ...

4. Water testing - Wikipedia

   en.wikipedia.org/wiki/Water_testing

   Water testing being conducted at a treatment facility in Broken Bow, Oklahoma. Water testing is a broad description for various procedures used to analyze water quality. Millions of water quality tests are carried out daily to fulfill regulatory requirements and to maintain safety. [1] Testing may be performed to evaluate:

5. Hach Company - Wikipedia

   en.wikipedia.org/wiki/Hach_Company

   Hach Company manufactures and distributes analytical instruments and reagents used to test the quality of water and other liquid solutions. Manufactured and distributed worldwide, Hach systems are designed to simplify analysis by offering on-line instrumentation, portable laboratory equipment, prepared reagents, easy-to-follow methods, and technical support.

6. Water quality - Wikipedia

   en.wikipedia.org/wiki/Water_quality

   The most familiar of these is probably the presence of calcium (Ca 2+) and magnesium (Mg 2+) that interfere with the cleaning action of soap, and can form hard sulfate and soft carbonate deposits in water heaters or boilers. [13] Hard water may be softened to remove these ions. The softening process often substitutes sodium cations. [14]

7. These Are the Best Hard Water Shampoos for Healthier ... - AOL

   www.aol.com/lifestyle/13-best-hard-water...

   Hard Water Wellness Shampoo. For glossier, easier-to-manage strands, both Haiti and Moser recommend this vegan, plant-based shampoo. With ingredients like nourishing panthenol, strengthening rice ...