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Water Treatment

What is in the water before it's treated?

All drinking water, including both tap water and bottled water, originates in rivers, lakes, streams, ponds, reservoirs, springs, and wells. Drinking water may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that the drinking water poses a health risk. However, any watershed may contain sources of contamination. As water travels over the surface of the land or through the ground, it dissolves naturally occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity. Contaminants that may be present in source waters before they are treated include:

More information about contaminants and potential health effects can be obtained by calling

the Environmental Protection Agency Safe Drinking Water Hotline at 1-800-426-4791.

Nelson Flanders Water Treatment Plant

How is the water treated?

The City operates three water treatment plants which have a combined capacity of 50 million gallons per day (MGD). Water treatment includes:

Water Quality Report|Water Utilities|Public Works & Natural Resources|City of Longmont
This page updated August 27, 2009
City of Longmont Public Works & Natural Resources
Water Utilities