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Holdsy PlumbingHoldsy Plumbing
Water Treatment in Gaithersburg, MD
Family-owned · Gaithersburg Local

Water Treatment in Gaithersburg, MD

Softeners, whole-house filtration, and drinking-water systems, sized to what's actually in your water.

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Water Treatment for County and Well Supply

Water treatment in Gaithersburg starts with knowing what you're treating, and that depends entirely on where your water comes from. County supply through WSSC runs moderately hard, which is a scale-and-appliance problem. A private well in Damascus, Clarksburg, or Poolesville can bring hardness plus iron, sulfur, or sediment, and those need different equipment. Call [(301) 834-2944](tel:+13018342944) and say which you're on.

We'd rather test than sell. Softener, filter, and drinking-water system all solve different problems, and installing the wrong one means you keep the complaint and gain a maintenance chore.

Completed water treatment in a Maryland home

Which System Solves Which Problem

Details below

Sediment, chlorine taste, whole-house

A whole-house filter handles what's coming in before it reaches any fixture. Whole house filtration.

Drinking and cooking water

Reverse osmosis under the sink, for when the concern is what you drink rather than what your appliances see. Reverse osmosis.

Well water with iron or sulfur

Rust staining or a rotten-egg smell needs treatment aimed at that specifically; a softener alone won't do it. Start with well pump service.
Water treatment detail in a Maryland home

Softener, Filter, or Both

These get used interchangeably in conversation and they aren't the same thing. A softener removes the calcium and magnesium that cause hardness, using an ion exchange resin that needs salt. A filter removes particulate, chlorine, taste, and odor. If your complaint is spotty glassware and scale on the kettle, a filter won't help you; if it's a chlorine smell, a softener won't.

Reverse osmosis is a third category, and it's for drinking water rather than the house. It produces very clean water slowly into a small tank under the sink, which is why it goes at the kitchen rather than the main.

The common Montgomery County setup is a softener at the main for appliance protection, and RO at the kitchen sink for what you drink. Well homes often add sediment or iron treatment ahead of the softener, because sending iron through softener resin fouls it early.

Water treatment detail in a Maryland home

What Ownership Actually Involves

A softener needs salt, and how often depends on your hardness and how much water the household uses. That's the honest answer; anyone quoting you a bag-per-month figure without knowing either number is guessing.

Filters need cartridges on a schedule, and the schedule is set by your water and your usage rather than by the calendar on the box. RO membranes last years, while the pre-filters ahead of them don't.

None of that is difficult, but it's real, and it's the part that gets skipped in a sales conversation. Ask (301) 834-2944 what a given system will actually ask of you before you buy it. Filter replacement is a service we do if you'd rather not.

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Find Out What's in Your Water First

Tell us whether you're on county water or a well and what you're noticing: spots, staining, smell, taste. Call [(301) 834-2944](tel:+13018342944), or request a free estimate through the [contact form](/contact-us).

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Water treatment detail in a Maryland home
FAQ Common questions

Frequently Asked Questions

Answers below
Is Montgomery County water hard enough to need a softener? +
County water supplied by WSSC falls in the moderately hard range, which is enough to leave scale on fixtures and shorten water heater life over time. Whether that justifies a softener depends on how much it bothers you and what your appliances are worth to you. Private wells in the upper county are frequently harder.
Do I need a softener and a filter? +
Only if you have both problems. A softener handles hardness; a filter handles sediment, chlorine, taste, and odor. Plenty of homes need one and not the other. Testing first is cheaper than buying twice.
My well water smells like rotten eggs. Will a softener fix it? +
No. That smell is typically hydrogen sulfide, and it needs treatment aimed at sulfur rather than hardness. Sending it through a softener won't remove it and can foul the resin. This is a case where the water test decides the equipment.
Can you service a system another company installed? +
Yes, including cartridge changes, resin problems, and units that were oversized or undersized for the house. If a system was specified wrong, we'll tell you what it would take to make it right rather than replacing it by default.

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