3 links
Drinking Water Standards
epa.gov
Several tables showing drinking water standards as set by the US Environmental Protection Agency.
Lifewater International
lifewater.org
A resource detailing low cost treatment, storage, distribution and sanitation methods to help the rural poor obtain safe water. Designs require Acrobat Reader.
Water Pollution
ater-pollution.org.uk
A forum covering water pollution issues, including drinking water, hard water, well water, pond water and swimming pool water discussion.