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NSF International educates consumers on numerous public health and safety issues including drinking water, dietary supplements, kitchen products, water filters, home appliances, pools and plumbing products.

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  • Tips for Seasonal Pool Owners

    • 4 hours ago

    The process of preparing backyard swimming pools and spas for the summer can be daunting...

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  • Why Is Finding a Water Filter So Complicated? We’ve Got the Answers!

    • 4 weeks ago

    “What is the best filter for getting rid of everything in my water?” “How do...

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  • Radon in Drinking Water

    • 4 weeks ago

    While experts estimate that one out of every 15 homes in the U.S. contains levels...

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  • What is Reverse Osmosis?

    • 1 month ago

    Reverse osmosis (RO) refers to the process of reducing contaminants in water by reversing the...

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  • Disinfection Byproducts in Drinking Water

    • 1 month ago

    Many public water utilities disinfect their water with chlorine, ozone or other processes to help...

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  • Pesticides in Drinking Water

    • 1 month ago

    Pesticides are widely used to help control insects as well as to prevent the growth...

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  • Arsenic in Drinking Water

    • 1 month ago

    Arsenic is an element that is commonly found in soil and rock in many parts...

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  • Bacteria, Cysts and Pink Slime in Drinking Water

    • 1 month ago

    Although bacteria are more commonly found in untreated water supplies such as private wells, they...

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  • Treatment Options for Iron and Manganese

    • 1 month ago

    Iron and manganese occur naturally in ground water in many areas of the world. If...

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  • Total Dissolved Solids in Drinking Water

    • 1 month ago

    Total dissolved solids (TDS) is a measurement of all solids dissolved in drinking water, and...

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  • Treating Hard Water

    • 1 month ago

    If you have white buildup on the end of your faucets or scale forming on...

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  • Nitrate in Drinking Water

    • 1 month ago

    Nitrates are a naturally occurring chemical that can be found in both public and private...

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  • Chlorine and Chloramines in Drinking Water

    • 1 month ago

    To protect drinking water from bacteria and viruses, public water suppliers usually disinfect the water...

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  • Spring Into Cleaning With These Important Tips About Reading Labels

    • 2 months ago

    A product label can provide important information about product safety, product effectiveness and how and...

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  • Reliable and Scientific Tips for Cleaning With Vinegar

    • 2 months ago

    Vinegar is frequently recommended as a household cleanser, and can be effective on some stains...

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