A whole-house filter — also called a point-of-entry (POE) system — treats your water right where the main line enters the home. That means every faucet, shower, washing machine, and water heater gets filtered water, not just the kitchen sink. Instead of relying on a pitcher filter for one tap, you protect the whole house at the source. For homes across San Antonio and the Texas Hill Country, it's the foundation of clean, pleasant water for the entire family.
What a whole-house filter removes
A properly sized point-of-entry system targets the things that affect how your water looks, smells, and feels. Exactly what it removes depends on your water and the media we choose, but most systems address:
- Chlorine & chloramine — the chemical taste and smell that come with treated city water. Reducing these is the headline job of a carbon filter, and the difference at the shower and tap is immediate.
- Sediment, sand & silt — the grit and particulate that cloud water, clog aerators and valves, and wear out appliances over time.
- Taste & odor — including the musty, earthy, or "swimming-pool" smells that make water unpleasant to drink and bathe in.
- Some metals and other contaminants — depending on what your water test turns up and the specialty media we size for your home.
It's important to be straight about one thing: a whole-house filter does not soften water. It won't remove the dissolved hardness minerals that cause scale and spotting — that's a different job (more on that below).
Why homeowners install one
- Better-tasting, better-smelling water at every tap in the house.
- Cleaner showers and baths — chlorine-free water is easier on skin and hair.
- Less sediment reaching faucets, fixtures, ice makers, and appliances.
- Less reliance on pitcher filters and bottled water.
- One system protecting the whole home, installed cleanly at the main line.
Filter vs. softener — they do different jobs
This is the question we answer most often, so let's be clear. A filter removes chlorine, sediment, and odor. A softener removes hardness — the dissolved calcium and magnesium that scale your pipes, spot your dishes, and shorten the life of your water heater. They solve different problems, and one cannot do the other's job.
Many Central Texas homes need both. Because the region sits on limestone, water here is typically very hard. A whole-house filter makes your water taste and smell great; a water softener stops the scale and buildup. Running them together gives you water that's both clean and soft. Our free water test tells you exactly which one — or both — your home actually needs.
Types & stages
"Whole-house filter" can mean a single tank or a multi-stage setup. We size the stages to your water rather than selling a one-size-fits-all box:
- Sediment pre-filter — a first stage that captures sand, silt, and grit so the downstream media isn't fouled prematurely. On many systems this is a replaceable cartridge.
- Catalytic / activated carbon — the workhorse stage that reduces chlorine, chloramine, taste, and odor. Catalytic carbon is particularly effective against chloramine, which many municipal systems use.
- Specialty media — added when your water test calls for it (for example, media aimed at certain metals or specific nuisance issues). We only add a stage if your water justifies it.
Signs you'd benefit
- A chlorine or "pool" smell and taste — especially noticeable in the shower or first thing in the morning.
- Sediment, grit, or cloudiness showing up in fixtures, aerators, or the bottom of the tub.
- Dry, itchy skin and dull, tangled hair after showering.
- On city water: chlorine/chloramine taste and odor are the most common complaints. On a private well: sediment, iron, and odor issues are more typical — and well water can vary a lot, which is why testing matters. See our well water treatment options.
Our process
We start with a free on-site water test — a screening that measures your hardness, TDS, and chlorine so we know what's actually in your water. (It's a practical on-site screening, not a certified drinking-water safety lab analysis.) From there we recommend a right-sized system matched to your water and your household's flow needs — not an upsell — and give you an honest flat quote. Then we handle a clean, professional installation at the main line so the whole house is protected.
For service on an existing system, our flat $150 service call covers the trip and a full diagnosis only. Any repair (parts and labor) is quoted separately and approved by you before we do the work. Installs get an honest flat quote after the free water test. See the full price sheet.
Maintenance
A whole-house filter isn't "install it and forget it" — the media does the work, and it needs periodic attention to keep performing. Sediment cartridges are typically swapped every few months to a year, while tank-based carbon media generally runs several years before the bed is refreshed. We'll tell you the expected service interval for your specific system up front, and we can handle the maintenance when it comes due so your water quality doesn't quietly slip.
Frequently asked questions
Do I need a softener too?
Often, yes. A filter removes chlorine, chloramine, sediment, taste, and odor, but it does not remove hardness. Since Central Texas water is usually very hard, many homes run a softener and a filter together. The free water test tells you which you actually need.
Does it remove chlorine?
Yes — reducing chlorine and chloramine is exactly what a whole-house carbon filter is built to do. With the right media sized to your water, the improvement in taste and smell at every tap is immediate.
How often are filters serviced?
It depends on the system and your water. Sediment cartridges are usually changed every few months to a year; tank-based carbon media typically lasts several years before it's refreshed. We give you the expected interval for your system and can service it when it's due.
Is the free water test a certified lab test?
No. It's an on-site screening for hardness, TDS, and chlorine to size your system correctly — not a certified drinking-water safety lab analysis. If you need certified results, we'll point you to an accredited lab.
Serving San Antonio & the Hill Country
We install and service whole-house filtration for homes in San Antonio, Boerne, Bulverde, Spring Branch, New Braunfels, and Canyon Lake, and the surrounding Texas Hill Country. We're locally owned, licensed and insured, with 20+ years of experience treating Central Texas water. Call (210) 269-5446 or email service@purebranchwater.com to book your free water test.
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