COWAY TEXAS
Water Purifiers & Air Purifiers Rental
Rent or buy Coway water purifiers, air purifiers, bidets, water softeners, and massage chairs in Dallas, Plano, Carrollton, and Frisco, as well as Houston, Katy, Austin, and San Antonio. Installation and maintenance every 6 months are handled through Coway's official branch network.
- 13States Served
- 6In-home visits every 6 months
- FREEFree new installation
- 1:11:1 consultation in Korean
Texas Service Areas
Select a region to see the main cities we service, local installation notes, and frequently asked questions for that area. If your city isn't listed, just share your address and we'll confirm whether installation is available.
North Dallas
Dallas's Korean-American hub, including Carrollton and Plano
- Plano
- Carrollton
- Frisco
- Allen
- Lewisville
- The Colony
The heart of Dallas's Korean community and our highest-volume area for consultations and installs. With many larger single-family homes, it's common for households to install a water purifier, softener, and massage chair together.
Can Plano or Carrollton get a same-day consultation?
Yes — North Dallas is closest to our Coway branch, so we can usually schedule installation fastest here after your consultation.
Dallas · Irving · South
Downtown Dallas and west/south areas
- Dallas
- Irving
- Duncanville
- Lancaster
- Hutchins
This area is served by Dallas Water Utilities and has been confirmed to have no lead service lines. It's a mix of downtown condos and suburban single-family homes, so we confirm your home type before installation.
Do you install in downtown Irving condos?
Yes. Some buildings have delivery restrictions, so please share the building name and we'll check in advance.
East Dallas
East from Garland and Rockwall to Greenville
- Garland
- Rockwall
- Wylie
- Royse City
- Terrell
- Greenville
- Celeste
- Nevada
- Dodd City
- Whitewright
- Powell
- Point
This region covers a wide stretch of Dallas's eastern outskirts. For farther towns like Greenville, we group visits with other East Dallas installs for efficient scheduling.
Does a farther area like Greenville still get 6-month maintenance visits?
Yes, as long as your area is serviceable you'll get the same 6-month visit schedule, coordinated together with nearby areas.
Houston
Downtown Houston and western suburbs
- Houston
- Katy
- Sugar Land
- Fulshear
A hard-water area at 135.5 mg/L, where many households ask about a water softener alongside their purifier. Katy and Sugar Land have many new-construction communities, so built-in installation is also available.
Can you install in new-construction communities in Sugar Land?
Yes. New-construction communities tend to have standardized plumbing, which makes built-in and under-sink installations relatively straightforward.
Austin
Texas capital Austin and nearby areas
- Austin
- Manor
This area has moderate water hardness by Texas standards (93 mg/L), so most inquiries are for a standalone water purifier rather than a softener.
Is a water softener really necessary in Austin?
Not necessarily. Austin's water is at a moderate hardness level, so a purifier alone is enough for many households — we'll tailor the recommendation to your actual usage during the consultation.
San Antonio
South Texas San Antonio area
- San Antonio
Using groundwater from the Edwards and Trinity aquifers, this is the hardest water in Texas at 15–20 gpg — and has the highest rate of water softener installations.
Is a water softener pretty much essential in San Antonio?
It's not required, but since this is a very hard-water area, pairing a softener makes a noticeable difference in scale buildup and detergent use.
Installation may be difficult in areas more than 70 miles from a Coway branch or authorized dealer.
Texas Tap Water: Hardness Varies Widely by City
Tap water in Texas's major cities meets drinking water standards per each water agency's report. But hardness differs dramatically — Austin, which uses lake water, versus San Antonio, which draws from a limestone aquifer, can differ three to four times over.
U.S. Geological Survey (USGS) scale: 0–60 soft, 61–120 moderate, 121–180 hard, 181+ very hard. San Antonio converts the SAWS 15–20 gpg range; Houston and Austin are 2025 averages.
Dallas
0
Lead service lines in the inventory
- Treats water from Ray Roberts, Lewisville, Grapevine and other lakes
- Lead 90th percentile 1.1 ppb; zero sites over the action level
- Rated Superior by the Texas Commission on Environmental Quality
- Meets all state and federal water quality standards
Houston
135.5
mg/L average hardness · range 43.5–229 · hard
- Main system serves about 2.97M; 90.3% surface water, 9.7% groundwater
- Disinfected with chloramine
- 90% of lead tests at or below 5.1 ppb; no samples over 15 ppb
- 2 violations disclosed in 2025 report, including turbidity exceedance
Austin
93
mg/L average hardness · 5.4 gpg · moderate
- Uses Colorado River water flowing through Lake Travis and Lake Austin
- Chloramine disinfection, averaging 2.3 ppm
- No lead service lines in the public water system
- All 2025 test parameters met standards
San Antonio
15~20
gpg hardness · about 257–342 mg/L · very hard
- Edwards-Trinity aquifer groundwater naturally high in dissolved limestone
- SAWS notes hard water is not a health concern
- Lead 90th percentile 1.6 ppb; zero sites over the action level
- No 2025 violations in the main system
Scale and White Spots
In high-hardness areas like San Antonio and Houston, kettles, dishes, and shower enclosures easily develop scale. Split the job: a purifier for drinking water, a softener for household water.
Chloramine Taste and Odor
Houston and Austin disinfect with chloramine. It stays within safety standards, but some households are sensitive to the taste and odor.
Different Water Across Texas
Lake-water cities and groundwater cities differ greatly in hardness. Send us your address and we'll recommend products based on your water provider.
These figures are system-wide data published by the agencies; actual water quality at your home may vary by water provider, season, and building plumbing. Check your local water provider's annual quality report for precise figures.
Popular with Texas Households
Check rental discounts, free gifts, and sign-up offers.
5 Steps to Installation
- 1ConsultKakaoTalk or phone
- 2Place your orderProduct and address confirmed
- 3AgreementIdentity and autopay details
- 4SchedulingConfirmed by phone or email
- 5Installation6-month maintenance begins
Do you install in Carrollton or Plano too?
Yes — installation is available across North Dallas, including Carrollton and Plano. For Houston, Austin, and San Antonio, send us your address and we'll confirm availability.
Is Texas tap water safe to drink as is?
The latest reports from Dallas, Austin, and San Antonio water agencies show tap water meeting state and federal standards. Households usually choose a purifier for disinfectant odor, taste, or mineral content concerns.
What works best in hard-water areas like San Antonio?
SAWS lists tap water hardness at 15–20 gpg. Use a purifier for drinking water; if scale on showers and household water bothers you, consider adding a softener.
Can I install in a townhouse or apartment?
Most homes can be fitted, but renters should check with their landlord or management office first. We'll recommend the right model for your home — countertop or undersink — during your consultation.
How are filters maintained after installation?
During your rental, a Coway specialist visits every 6 months to replace filters and inspect your products. Maintenance is included in your rental fee.
Texas Installation Consultation
Consultations are free — send us your address and we'll confirm installation availability right away.