Welcome to the State of California 

Certified Water Treatment Devices

NOTE: This page and the linked pages below are for historical reference only, due to statutory changes -- for information about the current Residential Water Treatment Device Program, click here.

Section 1.  Introduction (PDF)Opens in new window. (Includes Certification Program Description, Directory Updates, How to Use the Directory, Anatomy of a Certificate)  - updated March 8, 2013

Section 2. List of Contaminants (PDF)Opens in new window.- updated February 2, 2011

Section 3. Manufacturers List of Certified Water Treatment Devices (PDF)Opens in new window.  - updated February 1, 2013

Section 4. Alphabetical List of Certified Water Treatment Devices (PDF)Opens in new window.  - updated February 1, 2013

Section 5. Numerical (Certificate) List of Certified Water Treatment Devices (PDF)Opens in new window.  - updated February 5, 2013

Section 5a. Numerical (Certificate) List of Water Treatment Components (PDF)Opens in new window.- updated February 1, 2013

Section. 6. Specific Lists of Water Treatment Devices by Performance Claims.

Arsenic (PDF)Opens in new window.- updated February 5, 2013

Cysts (PDF)Opens in new window.- updated February 5, 2013

Fluoride (PDF) Opens in new window.- updated February 5, 2013

Hexavalent Chromium (PDF)Opens in new window.  - updated February 5, 2013

Lead (PDF)Opens in new window.- updated February 5, 2015

Microbiological Treatment (bacteria and/or virus) (PDF)Opens in new window.- updated February 5, 2013

MTBE (PDF)Opens in new window.- updated February 5, 2013

Nitrates (PDF)Opens in new window.- updated February 5, 2013

Perchlorate (PDF)Opens in new window.- updated February 5, 2013

Radium-226/Radium-228 (PDF)Opens in new window.- updated February 5, 2013

Volatile Organic Compounds (VOCs) (PDF)Opens in new window.- updated March 8, 2013

Section 7. Specific List of Water Treatment Device by Type of System (PDF)Opens in new window.- updated February 1, 2013

Section 8. List of Devices No Longer Certified Opens in new window.- updated February 1, 2013

Section 9. List of Manufacturers (PDF)Opens in new window.- updated March 8, 2013

Section 10. Glossary (PDF)Opens in new window.

Section 11. Regulations (PDF)Opens in new window.

 

 
 
Last modified on: 6/2/2014 12:05 PM