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Holdsy PlumbingHoldsy Plumbing
Whole House Water Filtration in Gaithersburg, MD
Family-owned · Gaithersburg Local

Whole House Water Filtration in Gaithersburg, MD

Treated at the main, so every fixture gets it rather than just the kitchen.

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Whole House Filtration for County and Well Water

Whole house water filtration handles what a softener can't: sediment, chlorine taste, and odor. It installs at the main so every tap and appliance sees filtered water rather than just the kitchen. Call [(301) 834-2944](tel:+13018342944) and tell us what you're noticing.

This gets confused with softening constantly, and the two solve different problems. If your complaint is scale and spots, you want a [softener](/services/water-softener-installation). If it's grit, a chlorine smell, or taste, a filter is your answer. Some homes need both, plenty need one.

Completed whole house filtration in a Maryland home

Match the Filter to the Problem

Sediment filters catch particulate: sand, grit, and rust flakes. They're the first stage in almost any well setup and they protect everything downstream, including softener resin.

Carbon handles chlorine, taste, and odor. County water is treated before it reaches you, and carbon is what takes the chlorine character back out at the tap.

Well water is its own conversation. Iron shows up as rust staining on fixtures and laundry, sulfur as a rotten-egg smell, and neither responds to a plain sediment or carbon filter. Those need equipment aimed at that specific problem, which is why we test rather than guess. See well pump service if the supply itself is also acting up.

Whole house filtration detail in a Maryland home

What Filtration Fixes

Details below

Grit and sediment

Common on wells, and it wears out fixtures and appliance valves.

Chlorine taste and smell

Carbon media at the main, so showers improve too, not just drinking water.

Rust staining

Iron in well water. Needs iron-specific treatment, not a basic filter.

Rotten-egg odor

Hydrogen sulfide. A softener will not touch it, and sending it through one can foul the resin.
Whole house filtration detail in a Maryland home

Cartridges Are the Real Commitment

Filters work until the media is loaded, and then they stop working while looking exactly the same. The schedule depends on your water and your usage, not on the number printed on the box.

That's the honest downside, and it's the part that gets glossed over in a sales pitch. A neglected filter is worse than no filter, because it becomes a restriction in your supply.

We do cartridge changes as a service if you'd rather not track it. Call (301) 834-2944 and ask what a given system will actually require.

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Grit, Taste, or a Smell You Can't Place?

Describe your water and whether you're on a well. Call [(301) 834-2944](tel:+13018342944), or use the [contact form](/contact-us).

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Whole house filtration detail in a Maryland home
FAQ Common questions

Frequently Asked Questions

Answers below
What's the difference between a water filter and a softener? +
A softener removes the calcium and magnesium that cause hardness, so it fixes scale and spotting. A filter removes particulate, chlorine, taste, and odor. They address different complaints, and buying the wrong one means you keep the problem and gain maintenance.
Does county water need filtering? +
It's treated and safe to drink, so this is about preference rather than necessity. Most people who filter county water do it for chlorine taste and smell. Sediment is much more of a well-water concern.
How often do cartridges need changing? +
It depends on what's in your water and how much you use, which is why a generic interval isn't much use. We'll give you a realistic schedule for your setup, and we'll do the changes if you'd rather not keep track.

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