Is Your Tap Water Safe? A Scrunchy Mom's Filter Guide
Key Takeaways
- Tap water in the US can contain heavy metals, PFAS (per- and polyfluoroalkyl substances), microplastics, chlorine, and other contaminants that may affect hormone balance, fetal development, and long-term health, even at levels considered "legal" by current EPA standards.
- Not all filters are equal: a standard pitcher filter removes some contaminants, but reverse osmosis is the most effective method for removing the widest range of toxins, including fluoride and PFAS.
- You can find out exactly what is in your local tap water for free using the EWG Tap Water Database — start there before buying any filter.
Tap water in the US is regulated, but "regulated" doesn't mean "free of concern," especially during pregnancy or when feeding a baby.
TL;DR:
- Look up your local water report at the EWG Tap Water Database before choosing a filter type.
- Reverse osmosis removes the broadest range of contaminants, including PFAS and fluoride; gravity filters are a solid budget-friendly alternative.
- A shower and bath filter matters too — chlorine and heavy metals absorb through skin and vaporize into steam.
Why This Matters More During Pregnancy and the Baby Years
Growing bodies and developing fetuses are more vulnerable to low-level chemical exposure than adults. The National Institutes of Health has documented that endocrine disruptors (chemicals that interfere with your body's hormone signaling) can affect fetal brain development, reproductive health, and immune function even at very small doses.
Tap water can carry a long list of these chemicals: PFAS, heavy metals like lead and arsenic, chlorine and chloramine (used for disinfection), nitrates, microplastics, and more. Microplastics have now been detected in human breast milk and placental tissue, meaning even a baby who never drinks tap water directly may still be exposed through other routes.
None of this is meant to frighten you. Most US municipal water systems meet current legal standards. The issue is that those legal standards haven't always kept pace with the research, and for a pregnant mom or a newborn, that gap matters.
What Is Actually in Your Tap Water?
Does US tap water have contaminants worth worrying about?
Yes, and the specific mix depends heavily on where you live. Common concerns include:
- Lead, which can leach from older pipes and has no safe level of exposure for children, according to the CDC.
- PFAS (per- and polyfluoroalkyl substances, often called "forever chemicals" because they don't break down in the body), linked to thyroid disruption, immune suppression, and pregnancy complications.
- Chlorine and chloramine, added intentionally to disinfect water, but associated with skin irritation and potential formation of disinfection byproducts.
- Nitrates, especially concerning for formula-fed infants. High nitrate exposure in babies under 6 months is associated with a serious condition called methemoglobinemia.
- Heavy metals including arsenic, mercury, and cadmium, which can accumulate in the body over time and contribute to inflammation, poor detoxification, and hormonal imbalance.
What this means for your family: Even if your water "passes" federal testing, contaminants can still be present at levels that may affect hormone health, fetal development, and immune function over time.
The EWG Tap Water Database lets you type in your zip code and see a full contaminant report for your local utility, including substances found above EWG's health guidelines, even if they're within legal EPA limits. Check it this week.
Start here this week: Look up your zip code on the EWG database. Screenshot the results. This tells you exactly which filter type you actually need.
What Type of Water Filter Actually Works?
Good / Better / Best: Choosing the Right Filter for Your Budget
Not all filters remove the same things. Here's how to think about it by tier:
Good: Pitcher-style filters
A basic pitcher like a Brita removes chlorine, improves taste, and takes out some heavy metals. It's a meaningful first step and costs under $40. Clearly Filtered makes a pitcher that specifically targets fluoride, lead, and PFAS using what they call Affinity Filtration technology, a significant step up from standard pitcher filters.
If you're on a tight budget, start with a Clearly Filtered pitcher and don't stress yet about a whole-house system.
Better: Countertop and gravity-fed filters
Gravity-fed systems sit on your counter and filter water slowly through dense ceramic or carbon block media. Berkey is the most recognized name in this category. Their Big Berkey filter uses stainless steel housing and filters capable of removing bacteria, viruses, heavy metals, and chlorine. Alexapure and ProOne are strong alternatives in the same category, often at a lower price point.
These systems don't require installation or electricity, which makes them genuinely portable and budget-friendly over time.
SCRUNCHY MOM TIP: If you're renting or move frequently, a gravity-fed countertop filter is your best friend. No plumber, no installation, no lost deposit — just clean water.
Best: Reverse osmosis systems
Reverse osmosis (RO) is the gold standard. It forces water through a semipermeable membrane that removes up to 99% of contaminants, including fluoride, PFAS, nitrates, lead, and arsenic. AquaTru offers a countertop RO system that requires no under-sink installation, one of the most accessible options for renters. Waterdrop makes sleek under-sink RO systems if you're ready to commit to a permanent setup.
One consideration with RO water: it removes minerals along with contaminants. If RO is your primary drinking water, adding a mineral drops supplement or choosing a remineralizing filter stage is worth considering.
If you only do one thing from this section, do this: Choose a filter rated to remove PFAS and lead. Those are the two contaminants with the most documented risk during pregnancy and early childhood — lead because it has no safe level of exposure for children, and PFAS because of their links to thyroid disruption, immune suppression, and pregnancy complications.
What About Shower and Bath Water?
Does skin absorb contaminants from tap water?
Yes. Chlorine and chloramine strip the skin's natural oils, contributing to dryness, irritation, and flaking. When you shower in hot water, chlorine and some heavy metals can vaporize and be inhaled directly into the lungs, a route of exposure most people never think about.
For babies especially, bath water quality matters. A bath ball filter or a dedicated shower filter is an inexpensive way to reduce chlorine and sediment exposure through the skin. It's a low-cost addition that makes a real difference, particularly for babies with sensitive skin or eczema.
Ideally, you'd filter both drinking water and bath water. But if that's not realistic right now, prioritize the drinking water filter first, then add a shower or bath filter when budget allows.
If you only do one thing from this section, do this: Add a bath filter for your baby's tub. It's typically under $25 and addresses one of the most direct skin-exposure risks for newborns.
Water Filter Comparison by Scenario
| Scenario | Recommended Filter Type | Budget Entry Point |
|---|---|---|
| Renting / can't install | Gravity-fed countertop (Berkey, Alexapure) or countertop RO (AquaTru) | $40–$150 |
| Own your home | Under-sink reverse osmosis (Waterdrop) | $200–$400 |
| Pitcher-only budget | Clearly Filtered pitcher | $60–$90 |
| Baby bath / shower exposure | Shower or bath ball filter | $15–$30 |
| Well water household | Full lab test first, then RO or gravity with appropriate media | Varies |
Good Brands to Buy
- Clearly Filtered — pitcher and under-sink options with documented PFAS and lead removal; budget-accessible starting point
- Berkey Big Berkey Water Filter — gravity-fed, no electricity or installation needed, removes bacteria and heavy metals
- Alexapure — gravity-fed system at a lower price point than Berkey; solid for budget-focused families
- ProOne — gravity and pressure filters with built-in fluoride removal, no add-on required
- AquaTru — countertop reverse osmosis, renter-friendly, no installation required
- Waterdrop — under-sink RO for permanent installations; sleek design with smart filter tracking
FAQ
Q: Is bottled water safer than filtered tap water during pregnancy?
Not necessarily. Bottled water is also not subject to the same testing requirements as municipal water. And research on microplastics raises real concerns: a 2024 study published in PNAS found that one liter of bottled water contained an average of 240,000 plastic particles, 90% of which were identified as nanoplastics. A quality home filter is generally a safer and far more cost-effective option.
Q: What's the single most important contaminant to filter out if I'm pregnant?
Lead and PFAS are the two highest priorities based on current research. Lead has no safe level of exposure in pregnancy, and PFAS are associated with thyroid disruption, pregnancy complications, and immune issues. A reverse osmosis filter or a certified pitcher like Clearly Filtered addresses both.
Q: Do I need to filter water I'm using to mix formula?
Yes. The CDC recommends using water that has been treated to remove contaminants when mixing powdered or concentrated formula. Reverse osmosis or distilled water are the safest options. If you're using RO water long-term, confirm your formula already contains appropriate mineral levels, as RO water itself has essentially no minerals.
About the Author
Jenn Smith, RN BSN, is a registered nurse, mom, and co-founder of Scrunchy Living. She writes evidence-based guides to non-toxic living, pregnancy-safe products, and clean home practices for modern families.
This article is for educational purposes only and does not constitute medical advice. Always consult your healthcare provider before making changes related to pregnancy, infant feeding, or health concerns specific to your family.
Shop These Recommendations
| Product | Why It's Worth It | Amazon |
|---|---|---|
| Berkey | A popular gravity-fed water filter brand. Uses stainless steel housing and filters… | |
| AquaTru | A countertop Reverse Osmosis water purifier. Effective at removing a wide range of toxins… | |
| Alexapure | A gravity-fed water filtration system designed to remove contaminants like lead… | |
| ProOne | A brand offering gravity and pressure water filters. Their filters are designed to remove… | |
| Clearly Filtered | A brand offering water pitchers and under-sink filters with "Affinity Filtration"… | |
| Waterdrop | Innovative water filtration solutions including reverse osmosis systems, under-sink… |
From Scrunchy Living: The Non-Toxic Home Starter Kit ($74.99) replaces your household cleaners with one EWG Verified concentrate — quats-free, fragrance-free, and safe for pregnancy and babies. Includes a full year of ScrunchyAI, our ingredient-scanning tool for non-toxic families. Start your free 14-day trial →
You Might Also Like
- 5 Hidden Chemical Danger Zones in Your Home
- 7 Swaps to Cut Microplastics in Your Home | Scrunchy Living
- Scrunchy All-Purpose Wipes — Our most-loved non-toxic cleaning essential — safe for babies, surfaces, and the whole family.