The Hidden Impact of Water Quality on Kids’ Health

If you’re a parent, you’re already making countless intentional choices every day to support your child’s health. From balanced meals and regular activity to consistent sleep and steady routines, you’re doing everything you can to help them thrive.

But in the midst of the daily chaos, one simple but essential habit can get overlooked: proper hydration.

According to the Centers for Disease Control and Prevention (CDC), many children still aren’t drinking enough water – with about 1 in 5 children not drinking any plain water on a given day and roughly half of school-aged kids considered underhydrated.¹

So why is proper hydration so important when it comes to children?

Hydration is crucial for children because their bodies are 60-70% water and lose fluids faster than adults, making them susceptible to rapid dehydration. Proper hydration supports cognitive function (focus and memory), maintains energy levels, regulates body temperature, aids digestion, and prevents constipation and fatigue.²

But here’s what many people don’t realize: hydration isn’t only about quantity; it’s also about the quality.

The truth is, tap water can contain contaminants such as lead, chlorine, microplastics, and “forever chemicals” (PFOA & PFOS). Even at levels deemed safe for adults, long-term exposure to these contaminants can be more harmful for children, whose developing bodies are less equipped to process them.

How Water Quality Can Affect Children’s Health

The impact of water quality isn’t always obvious. In many cases, it’s subtle and builds gradually. 

Some potential concerns linked to long-term exposure to contaminants in tap water include:

• Effects on cognitive development and learning
• Increased sensitivity in the immune system
• Digestive issues or gut imbalance
• Hormonal disruption from certain chemicals
• Skin irritation or dryness

It’s important to note that not every child will experience noticeable symptoms. That’s part of what makes water quality so easy to overlook – it often doesn’t present immediate warning signs.

What Contaminants Can be Found in Tap Water That Are Particularly Harmful for Children?

Many families assume that if water is regulated, it’s completely safe. While municipal water systems are treated, they can still contain trace contaminants by the time water reaches the tap.

Some common contaminants include:

Lead
Often introduced through aging pipes or plumbing, lead is one of the most concerning contaminants for children as there is no safe blood lead level.³ Tap water contributes 20% or more to a child’s total lead exposure which can cause irreversible brain damage, IQ loss, learning disabilities, and behavior problems.⁴

Chlorine and byproducts
Chlorine is commonly used to kill harmful bacteria in drinking water. However, when it reacts with natural organic matter, it can form disinfection byproducts such as trihalomethanes (THMs) and haloacetic acids (HAAs). Long-term exposure to elevated levels of these byproducts can disrupt gut health and digestive function.⁵

PFAS (often called “forever chemicals”)
PFAS are a group of man-made chemicals that do not break down easily in the environment or the human body. As a result, they can accumulate over time. Research has linked certain PFAS exposures to effects on the immune system, including reduced response to vaccines, as well as potential impacts on hormone regulation and developmental processes.⁶

Microplastics
Microplastics are plastic particles smaller than 5 millimeters, and many are much smaller (even microscopic or nanoscale). They’ve been detected in both tap water and bottled water worldwide. In fact, microplastics have been detected in both tap water and bottled water worldwide – including products packaged in plastic and glass.

What’s more, recent studies confirm microplastics can breach the blood-brain barrier (BBB), accumulating in human brain tissue and leading to potential neurotoxicity, inflammation, and cognitive dysfunction.⁷

Simple Ways to Hydrate Safely at Home

The good news is that there are 3 practical steps you can take to feel more confident about the water your children drink. 

1. Start with awareness
Check your local water quality report to understand what’s in your tap water. You can also visit IsMyWaterSafe.com for a more detailed, personalized breakdown of your home’s water.

2. Use a high-quality filtration system
Not all filters are created equal. Look for systems that are designed to reduce a wide range of contaminants, including lead, chlorine, “forever chemicals”, and microplastics.

AquaTru water purifiers are tested and certified to NSF standards by IAPMO to remove 84 contaminants from your tap water so you and your family are staying hydrated without the contaminants.

Unlike basic pitcher filters, the AquaTru 4-stage Ultra Reverse Osmosis® system captures even the smallest and hard-to-filter contaminants.

This added level of filtration provides extra peace of mind, especially for families with children, by helping ensure that the water they’re drinking is not only clean, but consistently high in quality.

 

3. Encourage consistent hydration
Once you feel good about your water quality, it becomes easier to encourage kids to drink enough throughout the day. You’ll also have peace of mind knowing they’re drinking healthier, cleaner water that supports their health – not working against it.

Key Takeaways

• Children drink more water per pound of body weight than adults, increasing their overall exposure to contaminants in drinking water

• Kids’ brains, immune systems, and organs are still developing, making them more sensitive to certain contaminants

• Water quality issues often don’t cause immediate symptoms, so exposure can go unnoticed over time

• Because water is consumed daily, even low-level exposures can add up over time for children

• Improving water quality at home and encouraging consistent hydration can support healthier daily habits and long-term well-being
  
  

CITATIONS

1.https://www.unicef.org/press-releases/one-five-children-globally-does-not-have-enough-water-meet-their-everyday-needs
2.https://www.cdc.gov/healthy-weight-growth/water-healthy-drinks/index.html
3. https://www.cdc.gov/lead-prevention/about/index.html
4.https://www.epa.gov/ground-water-and-drinking-water/basic-information-about-lead-drinking-water
5.https://swehsc.pharmacy.arizona.edu/news/drinking-chlorinated-tap-water-may-alter-gut-bacterial-composition
6.https://www.epa.gov/pfas/our-current-understanding-human-health-and-environmental-risks-pfas#
7.https://www.washingtonpost.com/climate-environment/2025/02/03/microplastics-human-brain-increase/