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Ensure Healthy Indoor Environments
Housing should be built to provide healthy indoor environments by minimizing
indoor air pollution and protecting water quality. Most indoor air quality
problems arise from pollutants that are introduced into the house by construction
practices, building materials, adhesives, paint, and finishes. Gases,
airborne particles, dust and biological contaminants are the most common
pollutants, and when combined with a lack of natural ventilation, these
pollutants can reach concentrations that become hazardous to occupants'
health. Ironically and unfortunately, homes that are designed to be energy-efficient
are often built with airtight envelopes to minimize air leakage; the result
can be insufficient airflow necessary to reduce indoor pollutants.
Eliminating the source of pollutants and diluting the concentration
of contaminants promotes a healthy indoor environment. This may be accomplished
by: using less toxic materials; sealing equipment and surfaces to prevent
the release of polluting gases; and using a balanced mechanical ventilation
system to control the introduction of fresh air. Filtration systems also
may be used to remove particles from indoor air. Soil tests and environmental
assessments are needed to test for and minimize site and building pollutants
that may affect air and water quality, and remedial measures should be
taken when necessary. In addition, rehabilitation and adaptive reuse projects
require examinations for pollutants such as lead paint, asbestos, and
manufacturing chemicals. These toxins, if present, also necessitate remediation.
Link to resources
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