Water You Talking About? The Best Water for Hydration, Oral Health, PFAS, Filters, and Wellness Hype

Episode 20: Hydration and Hype in Plain English

In Episode 20 of The Unhinged Hygienists, Lauren Kennedy, RDH and Anastasia Dallas, RDH wade into tap water, bottled water, spring water, distilled water, reverse osmosis, water softeners, hydrogen water, alkaline water, structured water, light-infused water, sparkling water, and lemon water. Their goal is not to sell one perfect system. It is to separate practical water-quality decisions from expensive wellness marketing — without losing curiosity along the way.

Key Takeaways From Episode 20

• The best water for hydration is usually safe water you will drink consistently; there is no universally superior luxury water.
• Hydration supports normal saliva function, but persistent dry mouth can also come from medications, medical conditions, mouth breathing, radiation therapy, and other causes.
• Tap-water quality varies by location and plumbing. Start with your local annual water-quality report before buying a filter.
• Old service lines and household plumbing can contribute lead; PFAS are a legitimate drinking-water concern in some communities.
• A filter should be certified for the specific contaminant you need to reduce, installed correctly, and replaced on schedule.
• Reverse osmosis can reduce many dissolved contaminants, but performance varies by system and maintenance matters.
• Hydrogen-water research is interesting but preliminary. Broad anti-aging, detox, and disease claims outrun the evidence.
• Alkaline water does not meaningfully alkalize your blood; your lungs and kidneys tightly regulate blood pH.
• Structured, hexagonal, living, and light-infused water lack established clinical evidence for the sweeping benefits often advertised.
• Frequent sipping of acidic sparkling, citrus, sports, or electrolyte drinks may increase enamel-erosion risk.

How Hydration Affects Saliva, Dry Mouth, and Oral Health

Dental hygienists see hydration clues up close: sticky cheeks, foamy or ropey saliva, dry lips, a coated tongue, and tissues that look parched. Saliva is not just moisture. It lubricates the mouth, supports chewing and swallowing, helps buffer acids, begins digestion, washes away food debris, and contributes to the mouth's antimicrobial defenses. When salivary flow is low, talking and eating become harder, while the risks of cavities, oral infections, bad breath, and enamel damage can rise.

But dry mouth is not a one-cause diagnosis. Dehydration can contribute, yet medications are a leading cause of xerostomia, and autoimmune disease, diabetes, cancer treatment, nerve damage, mouth breathing, and salivary-gland disorders can also be involved. If dry mouth persists even when you drink regularly, ask a dentist or medical clinician to look for the cause instead of assuming another bottle of water will solve it.

Can Dehydration Cause Bad Breath and More Plaque?

It can contribute. With less saliva, odor-producing compounds and debris are not cleared as efficiently, and plaque can feel stickier. Hydration is one useful part of dry-mouth care, but it does not replace brushing, interdental cleaning, tongue cleaning, professional care, or treatment of the underlying cause.

What Is the Best Water for Hydration?

For most healthy people doing ordinary daily activities, plain, safe drinking water works. The best water to drink is one that meets safety standards, tastes acceptable to you, is affordable enough to use consistently, and fits any medical guidance you have been given. There is no strong evidence that an expensive pH, vortex, crystal, light, or hydrogen device is required for routine hydration.

Hydration needs are individual. Climate, activity, pregnancy, illness, food, medications, and health conditions all matter. A universal ounces-per-pound formula is not appropriate for everyone. People with kidney, heart, or liver conditions — or anyone on fluid restriction — should follow their own clinician's instructions rather than a social-media hydration challenge.

Do You Need Electrolyte Drinks?

Usually not for an ordinary day. Electrolyte replacement can be useful during prolonged vigorous exercise, heavy sweating, vomiting, diarrhea, or when a clinician recommends it. Many commercial hydration drinks also contain sugar and acids, so drinking them slowly all day can bathe enamel in an erosive environment. Use them for a reason, not because the label looks athletic; drink them with a meal or in one sitting, and rinse with plain water afterward.

Tap Water vs. Bottled Water: Which Is Better?

Neither category wins automatically. Public tap water is regulated by the Environmental Protection Agency, while bottled water is regulated by the Food and Drug Administration. Bottled water may come from municipal supplies or natural sources depending on the product, and a mountain on the label does not prove it is safer. Tap water can also vary by source, treatment plant, neighborhood, and the plumbing between the street and your glass.

Start locally. Community water systems publish annual Consumer Confidence Reports that explain detected contaminants and compliance. If you use a private well, you are generally responsible for testing it. If you live in an older home or an area with known contamination, targeted testing can answer more than taste, smell, internet rankings, or bottle branding ever will.

Lead, PFAS, and the Contaminants Worth Taking Seriously

Lead commonly enters drinking water through corroding service lines, solder, faucets, and household plumbing rather than at the treatment plant. You cannot reliably see, taste, or smell it. If lead is a concern, consult your water provider, use an appropriate certified filter, and consider testing at the tap.

PFAS — per- and polyfluoroalkyl substances — are often called forever chemicals because many persist in the environment. They have been used in products designed to resist heat, grease, oil, stains, and water. The EPA has established drinking-water limits for several PFAS, so concern is not merely wellness-industry hype. Risk still depends on the compounds and levels in your water; your local report or a qualified test should guide the response.

How to Choose a Home Water Filter Without Losing Your Mind

Know your water before you spend your money. A countertop pitcher, activated-carbon cartridge, under-sink reverse-osmosis unit, and whole-house system solve different problems. No filter removes everything, and a neglected filter can perform poorly. Look for independent certification that names the contaminant reduction you need — such as lead or specific PFAS — and follow the replacement schedule.

• Read your Consumer Confidence Report or test private-well water.
• Identify the actual concern: lead, PFAS, chlorine taste, hardness, arsenic, nitrates, or something else.
• Choose a system certified for that contaminant rather than for vague 'purity.'
• Confirm capacity, wastewater, installation, and replacement-filter costs.
• Change cartridges and sanitize the system exactly as directed.
• Retest when appropriate to confirm the solution works.

Reverse Osmosis Water: Benefits and Tradeoffs

Reverse osmosis pushes water through a semipermeable membrane and, depending on the certified system, can reduce contaminants including lead, arsenic, nitrates, dissolved solids, and certain PFAS. It also removes some calcium and magnesium, though food supplies most dietary minerals for most people. Tradeoffs include wastewater, maintenance, filter replacement, space, cost, and variable performance. Some systems add a remineralization stage for taste.

Water Softening Is Not Water Filtration

A water softener primarily exchanges hardness minerals such as calcium and magnesium for sodium or potassium ions. That can reduce scale on fixtures and appliances, but it is not the same as removing lead, PFAS, microbes, or other contaminants. If you need both softer water and contaminant reduction, those are separate decisions.

Is Distilled Water Safe to Drink?

Distillation removes dissolved minerals and many contaminants, which is why distilled water is useful in CPAP humidifiers, laboratories, and dental equipment where mineral buildup matters. It is not poison, and it is not a magical detox. Most people obtain the majority of their minerals from food; whether distilled water makes sense as your main drinking water depends on preference, diet, cost, and medical circumstances.

Hydrogen Water Benefits: Promising Science or Expensive Hype?

Hydrogen water is ordinary water with molecular hydrogen gas dissolved in it. Early human studies have explored oxidative stress, inflammation, exercise recovery, and metabolic markers. That makes it scientifically interesting. It does not make every marketed benefit proven. A 2024 systematic review described the research as encouraging but called for larger and more rigorous trials before broad conclusions can be drawn.

The evidence-based answer to 'what are the benefits of hydrogen water?' is therefore: possible benefits are being studied, but certainty, ideal dosing, product quality, and long-term clinical significance remain unsettled. Treat it as an optional experiment, not a replacement for safe water, medical treatment, sleep, movement, or nutrition.

Does Alkaline Water Change Your Body's pH?

Not in the dramatic way wellness marketing suggests. Your blood pH is tightly controlled by the lungs, kidneys, and chemical buffering systems. If a beverage could substantially push blood pH outside that narrow range, it would be a medical emergency — not a detox. Small studies have examined alkaline water for limited outcomes such as reflux or hydration markers, but evidence does not support claims that it broadly detoxifies the body, prevents disease, or cancels an acidic diet.

Structured Water, Living Water, and Light-Infused Water

Structured water may also be marketed as hexagonal, vortexed, living, EZ, frequency-infused, or memory water. Water molecules unquestionably behave differently near surfaces and under different physical conditions; that laboratory chemistry does not establish that a countertop vortex or light device creates lasting structures that improve cellular absorption, ATP production, collagen, nervous-system regulation, or longevity in humans.

Lauren describes her own experience of vortexed water feeling softer in her mouth — a valid sensory observation, not clinical proof. The right questions remain: Was the product tested in people? How many? Was there a control group? Was the study independent and peer-reviewed? Who funded it? Did the outcome matter to health, or only to a laboratory measurement? Curiosity and skepticism can occupy the same glass.

Is Sparkling Water or Lemon Water Bad for Your Teeth?

Plain carbonated water is generally less erosive than soda, but carbonation makes it mildly acidic, and citrus flavoring can lower the pH further. Lemon water, sports drinks, and many flavored electrolyte beverages also expose teeth to dietary acids. Frequency matters: sipping for hours repeatedly resets the acid challenge.

• Choose plain sparkling water more often than citrus-flavored versions.
• Drink acidic beverages with a meal rather than nursing them all day.
• Use a straw if it helps reduce contact with the front teeth.
• Rinse with plain water afterward.
• Wait before brushing after an acidic drink; let saliva begin neutralizing the mouth first.

The Unhinged Bottom Line

You do not have to choose between believing every wellness claim and believing nothing. Start with safe water, drink consistently, protect your saliva, learn what is actually in your local supply, and buy filtration for a verified need. Be interested in hydrogen water. Enjoy alkaline water if you like it. Ask questions about structured water. Just do not confuse an intriguing mechanism, a testimonial, or an expensive machine with a proven health outcome.

Stay hydrated. Stay curious. Stay unhinged enough to read past the label.