Water Quality & PFAS: A Simple Guide for Maryland Homeowners

Clean water matters for more than just drinking. You use it to cook, bathe, wash dishes, do laundry, and protect your plumbing and appliances. The tricky part is that some water problems are obvious (staining, odors, cloudy water), while others can’t be seen, smelled, or tasted at all. Water quality is about both.

One topic you may have heard more about lately is PFAS (sometimes called “forever chemicals”). Below, we’ll break down what PFAS are, why they matter, and what homeowners can do next.

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Video: Water Quality + PFAS Explained

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What “water quality” really means

When we talk about water quality, we’re usually talking about a mix of three things:

• Aesthetics: taste, odor, cloudiness, staining, discoloration
• Minerals & chemistry: hardness, acidity (corrosive water), iron, sulfur
• Contaminants: bacteria, nitrates, VOCs, heavy metals, and other compounds that may not be noticeable at the tap

Even if your water looks fine, that doesn’t guarantee it’s free of dissolved contaminants. That’s why professional testing is often the best starting point when you want real answers. A water test can screen for common water quality issues that aren’t obvious at the faucet.

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What are PFAS?

PFAS stands for per- and polyfluoroalkyl substances. This is a large group of man-made chemicals used for decades in products that resist heat, oil, stains, and water. Because they break down very slowly, PFAS can persist in the environment and can show up in water supplies. The EPA’s PFAS overview explains how these chemicals can make their way into drinking water sources.

You’ll often hear PFAS described as “forever chemicals” for that reason.

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Why PFAS matter to homeowners

Research on PFAS is still evolving, but public health agencies have linked certain PFAS exposures with effects such as increases in cholesterol, lower antibody response to some vaccines, changes in liver enzymes, and other outcomes (depending on the PFAS type, exposure level, and duration). Those health considerations are summarized by ATSDR.

From a practical homeowner standpoint, PFAS are a good example of why testing matters. They’re not something you can reliably identify by taste, smell, or appearance.

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Are PFAS regulated?

The EPA finalized national drinking water standards for several PFAS, and public water systems are required to monitor and take action if levels exceed those standards. Details around monitoring and compliance are covered within the EPA PFAS drinking water information.

Additional updates and announcements can also impact timelines and implementation, including the EPA announcement on keeping maximum contaminant levels for PFOA and PFOS.

If you’re on a private well, you don’t have a municipal utility doing that monitoring for you, so routine testing becomes even more important.

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How do you know if PFAS (or anything else) is in your water?

You test.

PFAS and many other contaminants can’t be confirmed without sampling and lab analysis. Professional testing collects a water sample and evaluates it using certified methods to detect even low levels of contaminants. Many homeowners start by looking at what a standard water test looks for and then expand testing based on location, water source, and concerns.

If you’re ready to confirm what’s in your water, Water Doctor offers drinking water testing in Maryland with recommendations based on your specific results.

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What filtration options can help with PFAS?

The right solution depends on your water source (city vs. well), what shows up in testing, and whether you want:

• Cleaner drinking water at one tap, or
• Cleaner water throughout the entire home

In general, proven treatment approaches for PFAS commonly include:

• Reverse osmosis (RO): often used as a drinking-water solution at the kitchen sink
• Carbon filtration: can be used for drinking water or whole-house applications depending on the setup
• Ion exchange (in certain applications): can be used to reduce specific contaminants, depending on your results and system design

PFAS are not the only concern that can show up in a water test. Issues like hard water, chlorine, iron, sulfur, and other contaminants can also affect taste, odor, staining, and appliance lifespan, which is why understanding common drinking water contaminants can help put your results in context.

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Next steps: what we recommend

If you’re concerned about PFAS or overall water quality, here’s a simple path forward:

1. Start with testing so you’re not guessing
2. Review your results with a specialist who can explain what matters (and what doesn’t)
3. Choose a filtration system that matches your water (not a one-size-fits-all product)
4. Maintain the system so it keeps performing the way it should

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Water Testing & Filtration in Maryland

Water Doctor has proudly served Maryland since 1979, and our certified specialists make house calls to help homeowners understand their water and choose the right treatment solution. Water Doctor provides water testing and filtration services across the region.

Request a Free Water Analysis Today
Call 301-953-2846 or schedule an appointment through drinking water testing.

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Quick FAQs

Can PFAS be removed from drinking water?

PFAS reduction is possible with the right treatment approach, such as reverse osmosis, carbon filtration, or other technologies depending on the situation. The right system depends on your source water and what shows up in testing.

Does my water “look fine” mean it’s safe?

Not always. Some contaminants can be present without obvious signs, which is why testing is often the best starting point. A good baseline is understanding what water testing looks for beyond taste and appearance.

Should I choose a whole-house filter or an under-sink system?

It depends on whether you want treated water at every faucet (whole-house) or primarily at one tap (under-sink). Many homes benefit from a combination, especially when both overall water quality and drinking water concerns are involved. A common comparison is whole-house vs. under-sink filtration.

How often should I test my water?

Annual testing is a common baseline, and testing is also smart anytime you notice changes in taste, odor, or appearance. Scheduling details are available through drinking water testing.