Links

• ADA Accessibility Guidelines

• American Gas Association

• American Society for Testing and Materials

• National Association of Home Builders

• American Backflow Prevention Association

• American Society of Plumbing Engineers

• American Society of Sanitary Engineering

• Mechanical Contractors Association of America

• National Association of Home Builders

• National Fire Protection Association

• National Kitchen and Bath Association

• Water Quality Association

• The National Institute of Standards and Technology

• Plumbing and Mechanic Magazine

• PM Engineering Magazine

• Contractor Magazine

• The Building Officials and Code Administrators International

• American National Standards Institute

• ASTM International Standards