County Directory of Information & Services | Public Alerts | Public Information | County Contact Information

Environmental Health


How to Find Us
County of Los Angeles
Department of Public Health
Environmental Health
5050 Commerce Drive
Baldwin Park, CA 91706
(888) 700-9995




Recommended Chemical Levels in Swimming Pools and Spas

  Minimum Ideal Maximum
Free chlorine residual Pools 2.0 2.0 - 3.0 Per Label
Free chlorine residual, Spas Wading pools and Spray Grounds 3.0 3 -4 Per Label
Combined chlorine 0 0 0.5
Bromine, Pools 4.5 4.5 - 6.5 22.0
Bromine, Spas Wading pools and Spray Grounds 6.5 6.5 - 7.5 22.0
Oxidation-reduction Potential (ORP) 650 mV - 900 mV
pH 7.2 7.4 - 7.6 7.8
Cyanuric acid 0 30 - 50 100
Total alkalinity 80 100 - 150 180
Calcium Hardness 150 200 - 300 500
Copper 0 0 0.3
Iron 0 0 0.2
Total dissolved solids:
Swimming pools
Spa pools



2,000 over start
1,500 over start

All readings are in parts per million unless otherwise indicated.

Note: Currently, the legal minimum free chlorine residual in public pools in California is 1.0 ppm for pools not using stabilizer (cyanuric acid) and 1.5 ppm for pools using stabilizer.

Back to Environmental Health's Home Page

What's New?
Proposed Change in Fiscal Year 2014-2015
Backflow Prevention Device Proposed Fee Change  

Effective Now: AB2130
No Bare Hand Contact with Ready-to-Eat Foods REPEALED  

Permit and License Billing

Taking care of your Public Health Permit or License just got easier! Read more here.

Choose Health LA
Healthy Kids Eat Here

New Official Inspection Report
[Guide | New Form | Video]

"Mercury In Face Cream" Fact Sheets
[English | Spanish]

Popular Links
2013-2014 License/Permit Fees

Beware: Health Inspector Imposters

Body Art

Certified Food Handler & Manager:
Community Events

Cottage Food Operation

Drinking Water Report

Food Facility (Restaurant/Market) Rating

Food Facility Closures

Food Recalls  

All Recalls for 2014:

Guidelines for Safe Food Donation

Inspect Your Home Kitchen

Mobile Food Facility Route Sheet

Motion Picture Catering Operation Permit
Pet Dogs in Outdoor Dining Areas

Plan Check Guides:
Swimming Pool Inspection Details

Swimming Pool Closure List

What to Expect as a Food Operator
Director of Environmental Health
Angelo J. Bellomo
Director's Biography
Home  |
Environmental Health
Public Health
LA County
  Careers  |   DPH Programs  |   Email: Webmaster  | Notice of Privacy Practices | 
  Website Privacy Policy  |   Language  |   Accessibility  |   Disclaimer |   Employee  |
Admin Use
Outlook E-mail
DPH Intranet (At Work)
Los Angeles County Seal: Enriching lives through effective and caring services