The 2003 National Standard Plumbing code comes updated from the 2000 version and includes 18 Comprehensive sections that detail the most common materials, devices, fixtures and equipment that are commonly used for installing plumbing systems. This is the only reference of code available that comes with a special appendix on graywater recycling systems. This publication comes in a three ring binder format. This is an essential to anybody working within the plumbing industry. Everybody from installers and designers to technicians can benefit from having this handy resource at their disposal.