Drainage & Sewer
Learn how you can help keep the unwanted water that is carried off your street and away from your home from causing harm.
http://www.ci.seattle.wa.us/util/Services/Drainage_&_Sewer/index.asp

Water
Learn about measuring your water usage, what you need to know about water quality and ways you can reduce your water use.
http://www.ci.seattle.wa.us/util/Services/Water/index.asp

Preventing and thawing frozen pipes
Many people have asked have asked us for information and suggestions about how to prevent water pipes in the home from freezing, and how to thaw them if they do freeze. The following information is provided to address those questions.
http://www.weather.com/activities/homeandgarden/home/hometips/severeweather/pipefreeze_prevent.html

Water Conservation
There are many effective ways to conserve water in and around your home. Here are a couple of sites on learning how to:

Save Water 49 Ways

Water Conservation

Avoid water pollution
The Groundwater Foundation is a nonprofit organization dedicated to educating and motivating people to care for and about groundwater.
http://www.groundwater.org/