Air and Water Quality Advisory

The recent Eaton Canyon Fire has raised serious concerns about air and water safety for residents of Altadena and neighboring communities. Below, we provide important updates and a comprehensive FAQ about air and water quality, including concerns for schools, public spaces, and long-term environmental health.

The South Coast Air Quality Management District (South Coast AQMD) began air monitoring efforts in the burn scars and surrounding communities of the Eaton Fire and Palisades Fire. South Coast AQMD has been working closely with federal, state and local agencies, supporting ongoing emergency response and cleanup efforts. Debris removal could cause hazardous dust and ash to become airborne. This initiative, requested by the U.S. Environmental Protection Agency in close coordination with the California Air Resources Board, will assess air quality during debris removal or other activities.

 

South Coast AQMD’s monitoring efforts will occur in two key stages.

Stage One: Mobile Monitoring of Air Toxics

Two mobile monitoring vehicles will be deployed over a four-week period. Mobile monitors provide instantaneous measurements for toxic metals and volatile organic compounds (VOC’s) and identify potential hot spots in areas near the Eaton and Palisades Fire zones. Results of the mobile monitoring will help identify locations for temporary air monitoring stations.

Stage Two: Stationary Air Monitoring

Placement of monitoring stations will be determined based on mobile monitoring results, cleanup activity, sensitive receptors (such as residents and schools) and meteorological conditions. These stations will include air monitors that will provide data for particulate matter (PM), lead, arsenic, and asbestos in communities near the burn zones. South Coast AQMD will continue to work closely with federal, state and local agencies as well as the local public health agencies to provide the public with air monitoring data from these efforts.

Residents are advised to avoid attempting to clean up fire debris – i.e., damaged structures, furniture, personal belongings, vehicles, vegetation, or other items that have been burned by the wildfires. The Los Angeles County Department of Public Health (LADPH) and the Pasadena Public Health Department (PPHD) issued orders prohibiting the unsafe removal, transport, and disposal of fire debris. These orders aim to safeguard public health and safety by prohibiting residents from removing debris without adequate oversight.

For additional information on South Coast AQMD efforts in response to the recent wildfires, please visit www.aqmd.gov/lawildfires.

For wildfire, smoke, ash and safety tips, please visit: www.aqmd.gov/wildfiretips.

Air Quality Advisory

What Is the Air Quality Index (AQI)?

The AQI measures air pollution levels, including particulate matter (PM2.5 and PM10), ozone, carbon monoxide, and other pollutants.

AQI RangeAir Quality StatusRecommendations0–50

GoodAir quality is safe for everyone.51–100

ModerateAcceptable, but sensitive groups (e.g., those with asthma) should be cautious.

101–150Unhealthy for Sensitive GroupsIndividuals with respiratory conditions should limit outdoor activity.

151+Unhealthy or WorseEveryone should avoid outdoor activities.

Concerns Beyond the AQI

  • The AQI does not measure all fire-related toxins, including heavy metals and volatile organic compounds (VOCs) that can persist long after the fire.

  • Wind patterns can spread toxic ash miles away from the fire zone, impacting air quality far from the source.

  • Children, elderly individuals, and those with respiratory conditions are particularly vulnerable.

Concerns for Schools and Outdoor Activities

Are Kids Safe at School Without Masks?

  • Schools should implement air monitoring systems and install high-efficiency filtration (HEPA) systems.

  • Masks (N95 or P100) should be worn indoors when air quality is poor.

  • Schools should reduce outdoor recess or physical activities on days when AQI is high.

Are Parks and Open Spaces Safe?

  • Some parks have been partially closed due to air and soil contamination.

  • Avoid activities like jogging or hiking in recently burned areas until testing is complete.

Water Quality Advisory

How Wildfires Impact Water Systems

  • Negative Pressure: Fire-damaged water infrastructure can pull contaminants into water lines.

  • Backflow Issues: Burned structures can introduce toxic chemicals into the water supply.

  • Plastic Pipes and Tanks: High heat can cause toxic leaching of chemicals like benzene.

Water Safety Recommendations

  • Use bottled water for drinking, cooking, and hygiene until local authorities confirm safety.

  • Do not assume boiling water removes contaminants—some toxins, like benzene, cannot be eliminated by boiling.

  • Regular testing of water quality should be conducted by official agencies.

Air Quality & Health Risks

Q: How trustworthy is the AQI? A: The AQI provides a general guideline, but it does not measure all harmful compounds. Cross-check with local air quality updates for a more complete picture.

Q: Is the air safe for babies and young children? A: No. Children breathe more air per unit of body mass, making them more vulnerable. Keep them indoors when AQI is above 100.

Q: How do I create a safe indoor space? A:

  • Use an air purifier with a HEPA filter.

  • Seal windows and doors to prevent smoke intrusion.

  • Avoid using fans that pull in outdoor air.

Q: What should I do if I smell smoke inside my home? A:

  • Run an air purifier.

  • Place damp towels under doors to block smoke from entering.

  • Ventilate the house once outside air improves.

Q: How does air pollution affect long-term health? A: Prolonged exposure to smoke and VOCs increases the risk of respiratory diseases, heart conditions, and potentially cancer.

Water Safety & Usage

Q: How can I ensure my water is safe? A: Only drink water tested and cleared by local authorities. Updates are provided by Kinneloa Irrigation District and Lincoln Avenue Water Company.

Q: Can I wash dishes, shower, or clean with tap water? A: If authorities have deemed water unsafe, avoid all contact—VOCs like benzene cannot be removed by boiling.

Q: Can I use my whole-house water filter? A: Whole-house filters may not remove all toxins, particularly VOCs and heavy metals. Consult a specialist before use.

Q: Should I get my plumbing inspected after the fire? A: Yes. Heat-damaged plastic pipes can leach toxins into your water supply. A licensed plumber can assess potential contamination.

Q: Can I use water from my well? A: Do not use well water until it has been professionally tested. Wildfires can introduce toxins into groundwater.

Resources for Residents

For assistance and further information, residents can utilize the following resources: