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IN THIS SECTION:
Main
Where Our Water Comes From
What's in Our Water
Water Quality Report Charts
Special Notices
Download Water Quality Reports
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What are Contaminants?
A contaminant is a technical term for anything detected other
than water. It is natural for drinking water to contain some
contaminants, and San Antonio Water System is no exception.
The presence of contaminants in drinking water and even
bottled water does not necessarily indicate that water poses a
health risk.
Sources for drinking water (both tap water and bottled water)
include rivers, lakes, streams, ponds, reservoirs, springs and
wells. As water travels over the surface of the land or through
the ground, it dissolves the naturally occurring minerals and,
in some cases, radioactive material, and can pick up substances
resulting from the presence of animals or from human activity.
What are Secondary Constituents?
Many constituents (such as calcium, sodium or iron), which
are often found in drinking water, can cause taste, color
and odor problems. The taste and odor constituents are
called secondary constituents. These constituents
are not causes for health concerns. A table with this information is
presented on the Water Quality Report Charts page.
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