Water
- American Water Works Association
- Clean Water Act – EPA
- Healthy Watersheds Protection – EPA
- How To Save Every Drop – California Degrees
- Oregon Drinking Water Services – Oregon Health Authority
- Water Conservation – Regional Water Providers Consortium
- WaterSense – EPA
For Kids
- 100+ Water Saving Tips – Water Use It Wisely
- Dictionary of Water Terms – USGS
- Earth's Water Cycle – NASA
- Learning and Teaching about the Environment – EPA
- Precipitation Education Glossary – NASA
- The Water Cycle – USGS
- WaterSense for Kids – EPA
- Water Science School – USGS
General
- American Public Works Association – Oregon Chapter
- American Public Works Association – National