Contacting your utility company is a good idea for another reason. Some public water utilities conduct regular facility tours at no charge to the public. You may be able to schedule a visit for the whole family and let the pros teach your kids how a drop of rain water travels from a storm cloud to your kitchen sink. These tours are very informative and fun, too. If your water utility doesn't conduct tours, the Environmental Protection Agency offers a virtual online tour of a drinking water plant that may be worth a few minutes. It's too complex for younger kids, but can still help give you the general idea if you plan on explaining the process to them: Drinking Water Plant Virtual Tour.
Visit Your Local Drinking Water Plant