Natural Resources Department - Air
FAQ's on H2S - TBD
What does H2S smell like?
It has a distinct, strong odor of rotten eggs.
What are the health effects?
Exposure can cause headaches, nausea, vomiting, eye irritation, fatigue, and respiratory issues.
Is it dangerous?
While often below dangerous levels, it can exceed California’s 30 parts per billion (ppb) 1-hour standard. It is particularly risky for people with asthma or respiratory conditions.
When is the smell worst?
The smell is usually most intense during the summer months (August/September).
(CalMatters +5)Causes and Environmental Factors, Why is this happening?
As the Salton Sea shrinks, it exposes, or “desiccates,” organic matter (decaying algae and fish) that releases
What role does wind play?
Strong winds, especially from the southeast, carry the gas from the Sea to nearby communities like Mecca and Indio.
Does the sea smell all the time?
It is becoming more common year-round, but peak odor events are usually tied to specific, high-wind, or warm-weather conditions.
(AQMD (.gov) +4) Monitoring and Safety, Where can I check levels?
Real-time data and alerts are available at saltonseaodor.org.
How does the government monitor it?
The South Coast AQMD monitors at three main locations in the Coachella Valley.
Are current monitors accurate?
Recent studies suggest that existing monitors may underestimate the frequency and intensity of levels in surrounding communities.
Are current monitors accurate?
Recent studies suggest that existing monitors may underestimate the frequency and intensity of levels in surrounding communities.
(AQMD (.gov) +4) Safety and Mitigation, What should I do during a high-odor event?
Remain indoors, keep windows closed, and avoid physical exertion.
How is this being fixed?
The State of California and IID are working on dust suppression projects to cover the exposed seabed.
Can I eat fish from the Salton Sea?
While unrelated directly to the smell, OEHHA has specific consumption advisories due to contaminants in the fish.
