News
Home Page
California
Election 2024
Housing & Homelessness
Politics
Science & Medicine
World & Nation
Business
Artificial Intelligence
Autos
Jobs, Labor & Workplace
Real Estate
Technology and the Internet
California
California Politics
Earthquakes
Education
Housing & Homelessness
L.A. Politics
Mental Health
Climate & Environment
Global Warming
Water & Drought
Entertainment & Arts
Arts
Books
Stand-Up Comedy
Company Town
The Envelope (Awards)
Movies
Music
Television
Things to Do
De Los
En Español
Food
101 best restaurants in L.A.
Recipes
Image
Lifestyle
Health & Wellness
Home Design
L.A. Affairs
Plants
Travel & Experiences
Weekend
Things to Do in L.A.
Obituaries
Opinion
Editorials
Letters to the Editor
Op-Ed
Short Docs
Sports
Angels
Angel City FC
Chargers
Clippers
Dodgers
Ducks
Galaxy
High School Sports
Kings
Lakers
Olympics
USC
UCLA
Rams
Sparks
Times Everywhere
404 by L.A. Times
Facebook
Instagram
LA Times Today
Newsletters
Photography
Podcasts
Short Docs
TikTok
Threads
Video
YouTube
X (Twitter)
For Subscribers
All Sections
_________________
eNewspaper
About Us
About Us
Archives
Company News
eNewspaper
For the Record
Got a Tip?
L.A. Times Careers
L.A. Times Store
L.A. Times Studios
News App: Apple IOS
News App: Google Play
Newsroom Directory
Public Affairs
Rights, Clearance & Permissions
Short Docs
Advertising
Place an Ad
Classifieds
Coupons
People on the Move
Find/Post Jobs
Local Ads Marketplace
Media Kit: Why the L.A. Times?
Hot Property Sections
Place an Open House
Sotheby’s International Realty
Bestcovery
Compare
B2B Publishing
Business Visionaries
Hot Property
Crossword & Games
L.A. Times Events
L.A. Times Store
Subscriptions
Manage Subscription
EZPAY
Delivery Issue
eNewspaper
Students & Educators
Subscribe
Subscriber Terms
Gift Subscription Terms
Special Supplements
Escapes. Travel. Adventure (ETA)
Healthy Living
Las Vegas Guide
Philanthropy
Copyright © 2024, Los Angeles Times |
Terms of Service
|
Privacy Policy
|
CA Notice of Collection
|
Do Not Sell or Share My Personal Information
Sections
Show Search
Search Query
Submit Search
Advertisement
Natural swimming pools
Natural filtration system
(Tia Lai / Los Angeles Times)
Sept. 14, 2012
11:37 AM PT
Facebook
Twitter
Show more sharing options
Share
Close extra sharing options
Facebook
Twitter
LinkedIn
Email
Copy Link URL
Copied!
Print
Advertisement
