Photo Credits
Thank you to the following users for allowing licensing their photos under Creative Commons terms and conditions.
J. Botter - Down the Drain
Horst Gutmann - Broken Pipe
Stephen Pierzchala- Plumbing FTW
Roger Mommaerts - Water Heater
Roger Mommaerts - Tankless Water Heater
David Blackwell - Water Down The Drain
Chris Potter/Stockmonkeys.com - 3D Question Mark
Barta V - Sewer Pipes
Daniel Oines - Toilet Seat