Open 24/7 · Austin, TX

Water Filtration in Austin, TX

Water filtration in Austin starts with a simple question: what do you want the filter to take out? City water here is moderately hard and well treated, so the answer is usually taste, sediment or scale, and each one calls for a different setup. One call covers all of it.

Emergency? Call now, 24/7(737) 717-0737

Name the complaintTaste, specks, spots, or low flow after a filter.
Pick the point of useOne tap, the whole house, or the ice maker line.
Plumber sets it upFitted, flushed, and shown where the shutoff sits.

What we help with

Related help near water filtration in Austin

Filters sit beside other jobs. These pages cover the ones people ask about at the same time.

Water softener installation in Austin

For crusty faucets and spotty glass.

Water softener installation in Austin details →

Water heater repair in Austin

Mineral buildup and noisy tanks.

Water heater repair in Austin details →

Faucet repair

Clogged aerators and slow taps.

Faucet repair details →

Low water pressure

When flow drops after a new filter.

Low water pressure details →

Start here

Signs you need water filtration in Austin

Most households call about one of these. Each points to a different kind of filter.

The tap water tastes or smells of chlorineA disinfectant taste is common with treated city water. A carbon filter at the drinking tap is the usual answer.Taste and smell White crust on faucets and showerheadsThat is mineral scale. A filter alone does not remove it, but a softener or scale control can.Scale spots Grit or rust-colored specks in the aeratorSediment and pipe flakes clog small screens. A sediment stage catches them.Sediment Water pressure dropped after a filter was fittedA clogged cartridge or an undersized housing restricts flow.Slow flow The filter housing is drippingA cracked housing or a loose O-ring leaks fast. Shut the supply valve first.Leaking housing Water is cloudy right out of the tapTiny air bubbles clear in a minute. Cloudiness that stays is worth a call.Cloudy water A letter from the water utility about your service lineAustin Water has notified owners about certain galvanized service lines. A filter does not replace a pipe.Service line notice A filter that has not been changed in over a yearAn old cartridge stops working and can hold buildup. Swap it before you trust it.Overdue cartridge

Why call us

Why call one number for water filtration in Austin

A filter touches the supply line, the drain and sometimes the fridge. Having a plumber handle all of it matters.

Answered at any hourThe line is open 24 hours a day, 7 days a week.
Same-day service is availableA leaking housing or a burst filter line does not wait for a weekday.
A person on the phoneDescribe the taste or the specks and talk through your options.
Plumbing and filtration togetherSupply tees, shutoff valves and drain lines are plumbing work, so one visit covers them.
Plain advice on what a filter can doFilters fix some complaints and not others, and you hear which is which.

We vs others

Calling for a filter job versus buying a kit online

A boxed kit can work for a simple tap. Whole-house jobs are plumbing, and the difference shows up fast.

	UsOnion Creek Plumbing	vsMany other plumbing companies
Hours	Open 24/7A cracked housing at night is covered too.	Store hours and shipping windows
Reaching someone	A person answersTalk through the complaint before buying anything.	Forums and chat bots
How soon	Same-day service is availableUseful when the old filter has failed.	Parts arrive in days
What jobs are handled	Filters, shutoffs, supply lines, leaksOne number for the whole house.	Only the box in the box
Local knowledge	Austin Water supply is moderately hardThat shapes whether you need scale control at all.	A generic guide for any water
Price clarity	Ask about pricing when you callThe page lists what moves the cost.	A sticker price that ignores fittings

Based on what is typical. Individual companies vary.

How it works

How a water filtration call in Austin works

The visit follows your complaint, not a standard package.

Describe the complaint
Taste, smell, specks, spots, or pressure. Mention if you rent.
Choose the scope
One drinking tap, a fridge line, or the whole house.
Install and flush
The plumber fits the unit, flushes the cartridge and checks every joint.
Learn the upkeep
You are shown the shutoff, the filter size and when to change it.

Pricing

What changes the price of water filtration in Austin

Two filter jobs can look alike and cost very differently. These are the reasons.

Point of use or whole house

A single drinking tap is a small job. A unit on the main line is a larger one. Ask about pricing when you call.

How many stages

Sediment only, sediment plus carbon, or a multi-stage drinking system.

Where the main line is

A garage wall with a straight run is easy. A cramped closet is slower.

Drain and electrical needs

Some systems need a drain connection or an outlet nearby.

Cartridge upkeep

Replacement cartridges recur, so ongoing cost matters as much as the install.

Have this ready for the call

The complaint, in your words
Whether you own or rent
Where the main water shutoff is
Your address and the room for the unit

Ask about pricing when you call.

Call now, 24/7(737) 717-0737

Start with the complaint

Choosing water filtration in Austin by what you notice

Match the filter to the problem

Most disappointment with filters comes from buying the wrong type. A carbon block cleans up taste and odor but does nothing for scale. A sediment screen traps grit but not the flavor of a disinfectant. A softener handles scale but is not a drinking-water filter. Sorting the complaint first saves a second purchase.

Austin Water draws from the Lower Colorado River as it passes through Lake Travis and Lake Austin, and treats it at three plants. That is surface water, so seasonal changes in taste are normal, and a carbon stage at the kitchen tap is the common fix. Our main water filtration page covers the types in general.

Quick match

A filter fixes the first rows. Scale and rust need a different tool.
What you notice	Likely cause	Usual filter
Chlorine taste or odor	Disinfectant in treated water	Carbon at the drinking tap
Grit in aerators	Sediment or pipe flakes	Sediment stage on the main
White crust on fixtures	Dissolved minerals drying	Softener or scale control
Cloudy for a minute then clear	Trapped air	None needed
Rust-colored water	Iron in old pipe	Plumber inspection first
Weak flow after new filter	Clogged or undersized cartridge	Change the cartridge or housing

Complaint to filter

What is in the pipe

How Austin water shapes the filtration choice

Moderately hard city supply

Austin Water reported 2025 hardness between 70 and 126 ppm, which converts to about 4 to 7 grains per gallon, with an average around 5.4 grains. That is the moderate end of the scale, and it varies by plant and by season. Where you live inside the city and which plant feeds your block affects the number, so look at the report for your address or check your bill.

Moderate hardness has a practical meaning. Scale builds slowly, so many Austin homes get by without a softener and use a filter for taste alone. Others, especially those with a heater working hard, still see crust on fixtures. The hard water in Texas homes guide explains how to judge which camp you are in.

How hard is hard enough

Spotting on glasswareLight spots point to moderate minerals.
Crust on the showerheadHeavy crust points to scale control being worth it.
A heater that rumblesSediment and scale in the tank. See water heater repair.
A bill or report in handUse it to confirm the range for your block.
Taste onlyA carbon filter may be all you need.

Use your own signs before buying a softener.

Reading your notice

A service line notice is a pipe question, not a filter question

Galvanized lines and what a filter can and cannot do

Austin Water confirmed in October 2024 that its public system has no lead pipes. It also identified some galvanized service lines that need replacement and notified the property owners. Nothing here says your home is one of them, and a plumber cannot tell from the street either.

If you did get a notice, treat it as a plumbing job. A filter at the tap can catch flakes that break loose, but it does not repair a line. The relevant work is on the water line repair side, and the signs of corroded pipes guide lists what to look for inside the house. A filter can then sit downstream as a second layer.

If a notice arrives

Read the notice
Check the address and what it asks you to do.
Look inside
Specks, orange stain or falling flow at the same taps.
Call about the line
A plumber looks at the entry point and the meter side.
Add filtration after
Carbon or sediment as a second layer.

A notice leads to a pipe visit first.

Owners and renters

Water filtration in Austin when you rent or own

Permanent or portable

Fewer than half of Austin homes are owner-occupied, about 43 percent in the 2020 to 2024 census figures. That means a large share of people asking about a filter live in a rental and cannot cut into the main line. For them the realistic options sit at the sink or on the counter.

Owners can choose a whole-house sediment unit, a drinking-water system under the kitchen sink, or a fridge line filter. If you rent, a written yes from the owner before any cut into plumbing saves an argument at move-out. A plumber can still install a shutoff-friendly unit that comes off cleanly later. See the Austin plumbing page for other jobs.

Options by tenure

Rentals need the owner’s yes for anything on the line.
Setup	Cuts into plumbing?	Good for
Pitcher or countertop unit	No	Renters, short stays
Faucet-mount filter	No	Renters with a standard tap
Under-sink drinking system	Yes, small	Owners, or renters with approval
Fridge line filter	Yes, small	Ice and water dispensers
Whole-house sediment and carbon	Yes, on the main	Owners

Own or rent

When a filter fails

A leaking filter housing: shut it off, then call

Why housings fail and what to do

A whole-house filter holds water under line pressure all day. Housings crack from over-tightening, sump bowls loosen with vibration, and old O-rings dry out. When one lets go it can empty a surprising amount of water in a short time, often in a garage or utility room where nobody is looking.

Close the valve before and after the unit, or the main, and open a tap downstream to relieve pressure. Then call. If it happens at night, the emergency plumber in Austin page explains the call. Do not try to re-seat a cracked bowl.

When it leaks

Close the main valveDo this before touching the housing.
Relieve pressureOpen a tap on the far side of the house.
Photograph the unitUseful for the call and for any claim.
Keep the old bowlIt shows which model needs a replacement.
Do not use a wrench on a cracked bowlIt can split further.

A ten-second shutoff limits the damage.

Keeping it working

Upkeep for a filter after water filtration in Austin is done

Replacement schedules vary by model.
Part	How often to look	What to watch for
Sediment cartridge	Every few months	Dark color, falling flow
Carbon cartridge	About twice a year, or on the maker’s schedule	Taste returning
O-ring on the housing	Each cartridge change	Flattening or cracks
Drinking-water membrane	Per the maker	Slow trickle at the tap
Shutoff valves either side	Twice a year	Stiffness, drips
Pressure gauge or tap flow	Monthly glance	Sudden drop

Write the date on the cartridge when you change it. A filter that looks fine can still be spent. If the new cartridge brings back the old flow, you found the problem. If not, ask about plumbing repair, because the restriction may be elsewhere in the line. Heater owners should also read the water heater repair in Austin page, since sediment settles in tanks too.

Questions

Questions about water filtration in Austin

How much does water filtration in Austin cost?

It depends on whether you want one drinking tap, a fridge line or the whole house, how many stages the unit has, and how easy the pipe is to reach. Cartridges recur over time. Ask about pricing when you call and mention your goal.

Does Austin tap water need a filter?

Austin Water treats and tests its supply, so a filter is a choice about taste, grit or scale, not a requirement. Many people add a carbon filter at the drinking tap. Read the utility’s annual report and decide from that.

Will a filter fix hard water?

Not by itself. Carbon and sediment filters leave dissolved minerals in. Austin Water’s 2025 range was about 4 to 7 grains, moderate, so some homes add a softener or scale control. The softener page for Austin explains the difference.

Can I install a whole-house filter in an apartment?

Rarely. The main line belongs to the building, and cutting into it needs the owner’s approval. Renters usually do better with a pitcher, countertop unit or faucet-mount filter that comes off cleanly.

Is same-day filter installation possible?

Same-day service is available, depending on the job. A failing housing or a leaking line is handled first. A planned whole-house install is scheduled around urgent calls.

My filter housing is spraying water. What now?

Close the valve on the supply side, or the main, and open a downstream tap to drop the pressure. Keep clear of electrical outlets and call. Do not tighten a cracked bowl, because it can split.

I got a notice about a galvanized service line. Does a filter help?

A filter can catch flakes, but it is not a repair. The notice concerns the line that carries water to your home, so call about the line itself. A filter can go downstream afterward.

What does an under-sink system do that a pitcher does not?

It filters at the tap on demand and holds a larger cartridge, so it lasts longer between changes. It needs a small connection to the cold line, which makes it an owner or approved-tenant job.

Should I get a filter before a softener?

Decide by symptom. Taste and grit call for a filter. Crust on fixtures and spotty glass call for scale control. Some homes use both, with the softener first and a drinking filter at the kitchen tap.

How often should I change a cartridge?

Sediment cartridges often last a few months. Carbon cartridges commonly go about six months. Follow the maker’s schedule and change sooner if flow drops or taste returns.

Why did my pressure drop after the filter went in?

A whole-house housing can restrict flow when the cartridge is too fine or too full. Swapping the cartridge often fixes it. If not, the housing may be too small. Call and describe which taps are affected.

Do you cover the towns around Austin?

Yes. We cover Austin and nearby towns on one number. Water suppliers differ around the edges of the city, so give your address and check your bill for your supplier.

Guides

Guides for choosing and keeping a water filter

Ready to sort out your water in Austin?

Call and describe what you notice at the tap. Water filtration in Austin is handled at any hour, and same-day service is available.