Water Quality

topic

Water quality encompasses the chemical, microbiological, and mineral composition of drinking water — including beneficial minerals (calcium, magnesium, fluoride in appropriate concentrations), potential contaminants (heavy metals including lead from aging pipes, chlorination byproducts, PFAS 'forever chemicals', agricultural runoff including nitrates and pesticides), and pH — with filtration technologies ranging from activated carbon (removing chlorine, VOCs, sediment) to reverse osmosis (removing heavy metals, PFAS, fluoride) offering different removal efficiencies for different contaminant classes.

Role

Water quality is a nutritional variable that most people have never evaluated — drinking tap water without knowledge of their local water quality report, or filtering without understanding what their filter actually removes versus what it doesn't. The 2019 Environmental Working Group analysis found that PFAS — synthetic chemicals linked to cancer, immune disruption, and hormonal effects — contaminate the tap water of an estimated 200 million Americans, yet most people have no awareness of their personal exposure and no filtration system capable of removing PFAS. The practical implication is that water quality investigation and appropriate filtration is a high-priority, low-effort nutritional intervention that most people have never undertaken.

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