The EPA Says Our Water Is Safe: Why Does the EWG Disagree?
Is Georgia’s Tap Water Safe?
It depends who you ask, because criteria differs across organizations. Cumming's public drinking water meets the Environmental Protection Agency's (EPA) legal drinking water standards but not the Environmental Working Group’s (EWG) health guidelines.
That’s why you keep hearing people recommend reverse osmosis systems and whole-home water filtration.
The EPA and the EWG define "safe" differently.
The EPA creates legal drinking water standards that public utilities must follow. Those standards aren’t purely based on public health. The goal posts are moved based on available treatment technology and a calculation of what cities can financially afford.
The EWG takes a different approach. Their guidelines focus only on long-term human health regardless of treatment costs or municipal budgets.
That's why the same water can meet every federal requirement and still fail independent health guidelines like the EWG’s.
We live in Cumming, GA and most of our neighbors would say the water looks clean and smells fine. They say they trust the tap water because the government tests it frequently and has deemed it safe. What they don’t know is this big difference between “legal” water and “safe” water.
Why Two Experts Can Look at the Same Water and Reach Different Conclusions
This surprises many homeowners: One water report, two different opinions.
How is that possible?
It’s because the EPA and the EWG are asking different questions.
The EPA asks:
"In light of governmental financial constraints, what are reasonable public water contaminant limits?"
The EWG asks:
"What water contaminant amounts negatively impact human health?"
Those are vastly different questions that naturally lead to different answers. It doesn't mean that one organization is right and the other is wrong, but that they're measuring safety in different ways for different purposes.
Why Do the EPA and EWG Disagree About Drinking Water Safety?
The EPA sets the legal limits for public water systems, which are called Maximum Contaminant Levels. So in some sense, money and politics do have an effect on EPA rules, because their job is to regulate municipalities and ensure that they’re doing everything within reasonable means to provide clean water. The EPA tries to strike a balance between societal health and the financial cost associated with achieving it. For example, the EPA considers setting a limit, then determines how much it’ll cost cities to reduce their contaminant to within that limit. If the EPA decides that the cost is too expensive, they set a higher, less protective limit that the cities can reasonably reach.
The EWG is a non-profit organization of scientists and policy experts that doesn’t at all consider the financial cost associated with water sanitation. They’re purely health-based, only taking medical studies, childhood development data, and cancer risks to make their guidelines. Because of this, EWG has much stricter targets than what the law and EPA actually require.
Does the EPA Consider Cost When Setting Drinking Water Standards?
Yes, and it is their job to do so. Federal drinking water regulations are based on health research, but they also consider whether treatment technologies are readily accessible and whether public water systems can realistically implement them.
That doesn't mean the EPA ignores health or is willfully corrupt.
It means that the agency’s goal is to balance health protection with practical implementation across thousands of water systems. Their conclusions are targeted towards legislators and enforcement agencies, not homeowners or civilians who are simply wondering if their water is clean.
The EWG’s conclusions are targeted towards informing you, the homeowner, because their health guidelines don't have to consider governmental treatment costs.
Understanding this difference helps explain why EPA legal limits and EWG health goals often vary, and which one you should be paying attention to.
What Contaminants Are Found in North Atlanta Drinking Water?
Every public water system publishes an annual Consumer Confidence Report that lists the contaminants found in its water supply. Most homeowners never read it.
Those reports often show contaminant levels that meet every EPA requirement while still exceeding EWG health guidelines, and that's exactly why these two standards generate so much disagreement. We’re sure you’ve seen the arguments online debating whether or not we can trust the cleanliness of our water. At the end of the day, it’s not a political discussion over governmental trust, but a simple misunderstanding of purpose and application.You can read more about the 2026 Cumming Water Quality Report here, but this is a brief breakdown:
PFAS (Forever Chemicals):
These substances come from industrial waste and firefighting foam, but they don’t break down in the environment or your body. While the EPA has always delayed strict limits on these because of money, the EWG recommends zero as the limit, because these chemicals can be directly linked to kidney cancer and immune system issues.
Chromium-6:
A toxic chemical made famous by the Erin Brockovich story. There’s no specific legal limit for Chromium-6 set by the EPA, but the EWG recommends a strict limit because even tiny amounts can increase cancer risks.
Disinfection Byproducts (TTHMs & HAAs):
Water treatment plants like the one in Cumming use chlorine to kill bacteria, so when chlorine mixes with organics in the water, it creates Trihalomethanes (TTHMs) and Haloacetic Acids (HAAs). The EPA allows a high number of these because they care more about killing the bacteria over long-term exposure to the chemicals. On the other hand, the EWG health guidelines for these are much lower because long-term drinking of these byproducts is linked to bladder cancer and pregnancy complications.
Why This Matters for North Atlanta Homeowners
Most discussions about public drinking water happen at the national level, but your water quality is localized. Communities throughout North Atlanta rely on local water sources and treatment facilities that produce annual water quality reports, and those reports show water that fully complies with EPA regulations while containing levels of contaminants like PFAS, chromium-6, and disinfection byproducts that negatively impact our health. That's why many homeowners have water filtration systems installed in their homes.
Is Georgia Tap Water Safe to Drink?
Cumming’s tap water meets federal EPA legal standards, but it exceeds the EWG health-based guidelines across multiple contaminants. This is not isolated to Cumming, as it’s common for local water systems to have legal but elevated levels of PFAS, chromium-6, and disinfection chemicals. Our government doesn’t have the resources to implement fully clean public water, so we need in-home water filtration systems to remove these contaminants and meet all necessary health standards.
Should You Trust the EPA or the EWG?
This isn't an either-or decision in terms of trust. The EPA protects public drinking water by creating national standards that are enforceable and reasonable.
The EWG evaluates many of the same contaminants using health-based research and recommends lower exposure levels whenever possible.
Both organizations contribute valuable information, but they serve different purposes.
While the EPA helps to ensure that communities are receiving the safest public water they can afford, the EWG encourages discussion about whether long-term exposure to certain contaminants should be reduced even further.
Understanding both perspectives allows homeowners to make informed decisions about their own drinking water.
Do You Need a Whole-Home Water Filter or Reverse Osmosis?
This depends on your goals. If you're comfortable drinking water that meets EPA standards, your municipal water already satisfies those legal requirements. If your goal is reducing contaminants as much as you can, advanced filtration systems like reverse osmosis can remove many compounds that municipal treatment plants can’t eliminate at scale.
Many homeowners choose a whole-home filtration system for better water throughout the entire house.
How to Get Truly Clean Water in Your Georgia Home
Don’t wait for federal laws to change based on discretionary budgets. Protect your family and treat the water right from the moment it gets into your house. A point-of-entry whole-home water filtration system treats every water drop in your home.
It filters:
the water you drink
the water you cook with
the water you breathe in during a hot shower
Standard carbon filters remove chlorine taste and odor, so you’ll need a multi-stage system like reverse-osmosis to tackle the tougher contaminants in our water like:
PFAS
heavy metals
hard water minerals
At RX Plumbing & Drain, we focus on clean, fast, and experienced whole-home water filtration installations. We’ll first look at your local water quality, check your main water line, and install a system that keeps your water pure and safe.
Check our coupons page for plumbing and filtration specials, and contact us to schedule your visit now!
Water Quality Frequently Asked Questions
Is Georgia tap water safe to drink?
Public water systems throughout Georgia must meet EPA drinking water standards, but contaminants still exist that exceed the health guidelines published by the EWG. The EPA’s standards are focused on reasonable governmental enforcement and implementation, while the EWG’s guidelines strictly consider public health and safety.
Why are EPA and EWG water standards different?
The EPA establishes legal drinking water limits that consider public health, treatment technology, and implementation. The EWG publishes health-based recommendations that focus only on long-term health research.
Does the EPA consider treatment costs?
Yes. Federal drinking water regulations consider both health protection and what public water systems can reasonably achieve using available technology.
Is water that meets EPA standards automatically healthy?
Water that meets EPA standards is considered legally safe to drink. Some homeowners choose additional filtration because actual safety limits are far stricter than the EPA’s legal requirements.
Does reverse osmosis remove PFAS?
Many reverse osmosis systems are certified to reduce numerous PFAS compounds, along with chromium-6, lead, arsenic, and other contaminants. Performance depends on the specific system and proper maintenance.
Does boiling tap water remove chemicals like PFAS?
No, boiling water kills bacteria but it also concentrates chemical contaminants, like PFAS and heavy metals, because some of the pure water evaporates away.
Are pitcher filters enough to meet EWG standards?
Most basic pitcher filters only improve taste by removing chlorine. They don’t take out complex contaminants like PFAS or chromium-6. You need advanced filtration for those.
How can I know exactly what is in my home's water?
You can review your city or county’s annual water quality report through a quick Google search.
