Coway California
Water Purifiers & Air Purifiers Rental
In LA, Orange County, the Inland Empire, San Diego, and NorCal (San Jose · San Francisco), you can rent or buy Coway water purifiers, air purifiers, bidets, water softeners, and massage chairs. Installation and 6-month regular maintenance 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
California Service Areas
Select a region to see the cities where installation is available. Don't see your city? Send us your address and we'll check for you.
LA County
Downtown LA including Koreatown, plus the South Bay and San Gabriel Valley
- 로스앤젤레스
- 할리우드
- 베벌리힐스
- 컬버시티
- 산타모니카
- 말리부
- 글렌데일
- 파사데나
- 버뱅크
- 라크레센타
- 알함브라
- 아카디아
- 몬로비아
- 아주사
- 다이아몬드바
- 월넛
- 다우니
- 놀웍
- 세리토스
- 레이크우드
- 롱비치
- 토랜스
- 가디나
- 호손
- 잉글우드
- 맨해튼비치
- 팔로스버디스
- 샌페드로
San Fernando Valley · North LA
Northern LA Valley and Santa Clarita Valley
- 노스리지
- 밴나이스
- 셔먼오크스
- 실마
- 그라나다힐스
- 포터랜치
- 발렌시아
Orange County (OC)
Throughout Orange County, including Irvine, Garden Grove, and Buena Park
- 얼바인
- 가든그로브
- 부에나파크
- 라하브라
Inland Empire
Riverside County and San Bernardino County
- 리버사이드
- 샌버나디노
- 온타리오
- 치노힐스
San Diego
City of San Diego and the South Bay area
- 샌디에고
- 출라비스타
NorCal (Bay Area)
Korean communities including San Jose and San Francisco
- 산호세
- 샌프란시스코
Installation may be difficult in areas more than 70 miles from a Coway branch or authorized dealer.
California Tap Water: How Does It Differ by Region?
According to official water quality reports from major California water agencies, tap water meets federal and state drinking water standards. However, hardness (mineral content) varies significantly by water source, and most areas disinfect with chloramine.
USGS scale: 0–60 soft, 61–120 moderate, 121–180 hard, 181+ very hard. 1 gpg ≈ 17.1 mg/L.
Los Angeles
103~236
mg/L average hardness by area · about 6–14 gpg
- 2025 sources: LA Aqueduct 44%, Metropolitan Water District (MWD) 52%, recycled water 3%, groundwater 1%
- Central LA (including Koreatown) runs about 103–116 mg/L; East LA and Harbor areas about 234–236 mg/L
- Disinfected with chloramine; over 100,000 tests across 240 parameters meet all primary drinking water standards
- Service line survey found no lead service lines
Orange County
MIX
Groundwater + imported water blend · seasonal hardness variation
- Blends local groundwater and Orange County groundwater basin water with imported water from the Colorado River and Northern California
- IRWD considers 10+ grains hard; imported water is generally hard, local groundwater moderately hard
- Disinfected with chloramine; meets all federal and state standards for 2025
- No lead or galvanized service lines found
San Diego
~276
mg/L average hardness · about 16 gpg · very hard
- Per the city's official guidance, average hardness is about 16 gpg (276 ppm)
- Ranges 16–18 gpg (272–284 ppm) depending on demand and service area
- Among the hardest in major SoCal areas
San Francisco
62
mg/L average hardness · range 8–112 · about 3.6 gpg
- Up to 85% of supply is snowmelt from Yosemite's Hetch Hetchy Reservoir
- Much softer than SoCal, with far fewer minerals
- UV and chlorine disinfection followed by chloramine; meets all 2025 standards
- All 29 PFAS tested under federal rules: not detected
Scale and White Spots
In high-hardness SoCal, white scale builds up easily on kettles, dishes, and shower doors. Water agencies note that hardness is not harmful to health.
Chloramine Taste and Odor
Most areas use chloramine as the disinfectant. It's used within safety standards, but some households are sensitive to taste and odor.
The Role of Reverse Osmosis
LADWP cites reverse osmosis filtration and ion exchange as ways to reduce minerals in water. Filter configurations and certifications by model are available during consultation.
Figures above are system averages published by each water agency; actual home water quality may vary by utility, season, and building plumbing. Check your local utility's annual water quality report for exact figures.
View References
Popular with California 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 LA Koreatown or Torrance?
Yes, we install throughout most of LA County, including Koreatown and Torrance. Share your address and we'll confirm availability.
Is California tap water safe to drink as is?
Per 2025 reports from LADWP, IRWD, SFPUC and other major agencies, tap water meets federal and state drinking water standards. Households mainly choose purifiers when taste, odor, or mineral content is a concern.
What works best in hard-water areas like San Diego?
Use a purifier for drinking water; if scale on showers and fixtures bothers you, consider adding a softener. View Coway Water Softeners
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.
California Installation Consultation
Consultations are free — send us your address and we'll confirm installation availability right away.