Filtered Water = Fewer Allergies? Emerging Health Research Explained

 If you or someone in your household suffers from seasonal allergies, skin irritation, or unexplained respiratory issues, your first instinct might be to blame the weather, pollen count, or indoor air quality. But what if the real issue is coming from your tap?

Recent studies and growing health awareness suggest a surprising connection: the quality of the water you drink and bathe in may be linked to your allergy symptoms. Here’s what the research is saying—and how a whole house water filtration system may help reduce those annoying symptoms.

The Hidden Culprits in Tap Water

Municipal tap water is generally treated to meet safety regulations, but that doesn't mean it's completely free of irritants. Common elements found in unfiltered water that can trigger allergic or inflammatory reactions include:

  • Chlorine & Chloramines – Commonly used disinfectants that may dry out skin, aggravate eczema, and irritate airways.

  • Heavy Metals (like lead, copper, mercury) – Can cause inflammation or allergic-type responses in some people.

  • Pesticides & Herbicides – Trace amounts can enter water supplies from agricultural runoff and have been linked to allergic reactions and hormone disruption.

  • Volatile Organic Compounds (VOCs) – Chemicals from industrial waste or plumbing materials that may trigger asthma or allergic responses.

 What the Research Is Saying

Emerging studies are exploring how environmental toxins and allergens in drinking water may worsen symptoms such as:

  • Sneezing, congestion, or coughing

  • Itchy or dry skin

  • Respiratory issues (especially in children or asthma sufferers)

  • Food sensitivities and gut-related allergic responses

A 2023 study from the Journal of Environmental Health Science found that homes with advanced filtration systems reported a 20–30% reduction in allergy-related symptoms compared to homes using standard tap water. While more research is still ongoing, experts agree that reducing daily exposure to known waterborne irritants can help people—especially those with sensitive immune systems—feel better over time.

It’s Not Just What You Drink—It’s Also What You Bathe In

Your skin is your largest organ—and it absorbs what you expose it to. Bathing or showering in chlorinated or chemically treated water can strip the skin of its natural oils, triggering:

  • Dry patches

  • Itching and rashes

  • Worsening of eczema or psoriasis

  • Scalp irritation

Children, babies, and those with existing skin sensitivities are even more vulnerable. That’s why whole house water filtration, which treats all the water in your home (not just what comes out of the kitchen faucet), is essential for full protection.

How One Water Systems Can Help

At One Water Systems, we specialize in salt-free, low-maintenance, whole house water filtration designed for California homes. Our systems are engineered to:

  • Remove chlorine, chloramines, VOCs, and other chemical irritants

  • Reduce hard water minerals that worsen skin issues

  • Provide clean, fresh water to every tap, shower, and appliance in your home

  • Require little to no upkeep compared to traditional softeners

With no added salt or chemicals, our eco-friendly systems help create a healthier, allergy-conscious environment for your whole family.

The Bottom Line

While water filtration isn't a cure-all for allergies, it’s a simple, effective step in reducing daily exposure to hidden irritants. When combined with other lifestyle changes—like managing indoor air quality and choosing hypoallergenic products—filtered water can make a real difference in how you feel.

Want to see how clean water could help your home and health?
Contact One Water Systems today for a free in-home consultation or water quality test.

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