Part 1 - Why is clean indoor air important?
Part 2 - Sources of Indoor Air Pollution
Part 3 - How poor indoor air quality affects your health
Part 4 - Solutions...Creating Healthy Indoor Air inside our homes
Part 1 - Why is clean indoor air important?
Americans spend an average of 90% of our lives indoors according to the U.S. Environmental Protection Agency. This leaves only 10% of our time spent outdoors.
Much is written about outdoor sources of pollution and how human lives can be affected by polluted air, water and soil. However, given the percentage split above, do you think the indoor environment or the outdoor environment has the greatest potential to affect our health?
I live in Sacramento, California, and in the summer months, there are frequent notices that warn residences of unhealthy polluted air. Below is a copy of a common alert that I received in my email many times last summer:
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Today, July 10, and tomorrow, July 11, are Spare The Air days in the Sacramento region. Today, ground-level ozone air pollution is forecast to reach 174 on the Air Quality Index (AQI) - Unhealthy. Tomorrow, ground-level ozone air pollution is forecast to reach 154 AQI - Unhealthy. Today and Tomorrow: Yesterday's regional maximum: Extended Forecast: |
Now get ready for a shocker...We all should be getting daily warnings about the air pollution levels inside our homes....because the air in our homes can be much worse than outdoor air!
The U.S. Environmental Protection Agency (USEPA) says that the air inside our homes can be 2 to 100 times more polluted than the outdoor air in even the largest and most industrialized cities. "Thus, for many people, the risks to health may be greater due to exposure to air pollution indoors than outdoors". Why is this? Where does the pollution come from?
Even the cleanliest of households have pollution sources that can emit harmful levels of irritants, allergens, biological aerosols, and chemical compounds that can affect our health. Indoor air contains a vast amount of visible and invisible contaminants that are either particulates or they are gases, vapors and odors. Polltants levels build up and become trapped inside our homes because of three major factors: 1) Homes are built airtight for energy efficiency. 2) Even the draftiest homes lack adequate ventilation, 3) Home design and occupant lifestyles allow build-up of pollutants.
For more information see USEPA's Website and article "The Inside Story: A Guide to Indoor Air Quality.
See Part 2 Next - Part 2 - Sources of Indoor Air Pollution.
Environmentally Yours,
Nancy Lancaster is a Realtor and Ecobroker practicing in the greater Sacramento region for Lyon Real Estate . Visit Nancy Lancaster website to find homes for sale in Sacramento. Nancy Lancaster sponsors
a unique program called "Healthy Homes For You".![]()



The United States Environmental Protection agency (USEPA) recently announced their 2007 update of chemical release report information. Their on-line database is called the "
Have you ever discovered household chemicals in a home that you listed or that your Buyer wants to purchase? Garden pesticides, weed killers, drain cleaners, paint, chlorine bleach, laundry detergents, oven cleaners, solvents, batteries, electronic wastes, and automotive fluid are just some of the common Hazardous Materials used by homeowners. It is against the law to throw Hazardous Materials in the trash, municipal dump, to pour them down the sewer or storm drain...and no, you cannot dig a big hole and bury them either!










