CHECKPFAS · LEARN
PFAS, explained —
without the alarm.
In-depth explainers, regulatory updates, and research summaries on PFAS in drinking water. Matter-of-fact reporting; concrete advice.
◇ News
News & Regulation
Updates on EPA rules, lawsuits, and detection events.
The 3M and DuPont PFAS Settlements, Explained
Multi-billion-dollar settlements with 3M, DuPont, Chemours, and Corteva have reshaped US PFAS liability. Here's what they cover, who gets paid, and what they mean for affected water utilities and residents.
Where the EPA PFAS Drinking Water Rule Stands in 2026
The EPA's PFAS Maximum Contaminant Levels were finalized in April 2024, with monitoring compliance due in 2027 and treatment compliance in 2029. Here's where things actually stand and what it means for your water.
EPA PFAS Regulations: What's Changed and What to Expect
A timeline of EPA PFAS regulation including the 2024 MCL standards, UCMR 5 testing program, and what it means for your drinking water.
◷ Guide
Practical Guides
Practical, step-by-step explainers for households.
Does Boiling Water Remove PFAS? (No — Here's Why)
Boiling water does not remove PFAS — and can slightly concentrate it. Here's the science on why heat doesn't work, and what actually removes forever chemicals.
Does a Brita Filter Remove PFAS? (The Honest Answer)
Standard Brita pitchers are not certified to remove PFAS. Here's what Brita actually filters, what the testing shows, and which filters do remove PFAS from drinking water.
Does Reverse Osmosis Remove PFAS? (Yes — Here's How Well)
Reverse osmosis removes 90–99%+ of PFAS, including short-chain compounds. Here's how RO works, what to look for, and how it compares to carbon filters.
How to Test Your Water for PFAS: EPA Method 537.1 in Plain English
EPA Method 537.1 is the regulatory standard for PFAS testing in drinking water. Here's what gets measured, what a certified lab costs, and how to interpret your results.
PFAS in Private Wells: A Plain-English Testing Guide
EPA's drinking-water rules don't cover private wells, so testing is on you. Here's what to ask for, what it costs, and how to interpret the results — without panic.
How to Read Your Water Utility's Annual Consumer Confidence Report
Every public water utility in the US has to publish an annual Consumer Confidence Report. Here's how to find yours, what each section actually means, and what to look for if PFAS is a concern.
Best Water Filters for PFAS Removal (Tested & Reviewed)
Our top picks for water filters that actually remove PFAS. Includes reverse osmosis, under-sink, pitcher, and whole-house options.
How to Remove PFAS From Your Drinking Water (2026 Guide)
The most effective methods to remove PFAS from drinking water including reverse osmosis, activated carbon, and what filters actually work.
What Is PFAS? A Complete Guide to Forever Chemicals
Learn what PFAS are, where they come from, why they're called 'forever chemicals,' and what you can do to protect your family from contamination.
◐ Health
Health & Research
Research on PFAS exposure and human health.
PFAS and Cancer: Kidney, Testicular, and What the Evidence Shows
PFOA is now classified as a human carcinogen. Here's what the evidence shows on PFAS and kidney cancer, testicular cancer, and other cancers — and how to reduce exposure.
PFAS and High Cholesterol: What the Research Shows
PFAS exposure is consistently linked to higher cholesterol, even at low levels. Here's what the science says about the connection and how to reduce your exposure.
PFAS and Thyroid Disease: What the Evidence Shows
PFAS exposure is linked to thyroid hormone disruption and hypothyroidism. Here's what the research shows, who is most at risk, and how to reduce your exposure.
PFAS and Fertility: What the Science Says for Men and Women
PFAS exposure is linked to reduced fertility in both men and women, including longer time-to-pregnancy and lower sperm quality. Here's the evidence and how to reduce exposure.
PFAS in School Drinking Water: What Parents Need to Know
Millions of children drink water at schools that may contain PFAS. Learn how to find out if your child's school is affected, what districts are doing about it, and how to protect your family.
PFAS Contamination Near Military Bases: Risks, Resources, and What to Do
Military bases are among the worst PFAS contamination sites in the US due to decades of firefighting foam use. Learn the risks, affected states, and how to protect your family.
PFAS Exposure During Pregnancy: What Expecting Parents Need to Know
PFAS chemicals cross the placental barrier and accumulate in breast milk. Here's what the research says about pregnancy risks, and how to reduce your exposure starting today.
How PFAS Affects Your Health: What the Science Says
A science-based overview of PFAS health effects including cancer risk, thyroid disruption, immune system impacts, and reproductive concerns.
○ Science
How PFAS Work
How PFAS work, where they come from, what removes them.
EWG vs EPA: Why Their PFAS Numbers Don't Agree
The Environmental Working Group's PFAS tap-water tracker and the EPA's UCMR 5 dataset often show different numbers for the same address. Here's why — and which one to trust for which question.
PFAS in US Drinking Water: A State-by-State Contamination Guide
How does PFAS contamination vary across the United States? A data-driven guide using EPA UCMR 5 results, with links to check every state's water quality.
Ready to check your own water?
Reading helps; data is faster. Look up your ZIP code to see what EPA's UCMR 5 testing program found in your local utility.
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