
- Author: American Water Works Association
- Language: English
- Year: 2014

- Author: Association American Water Works
- Language: English
- Year: 2013

- Author: American Society of Civil Engineers
- Language: English
- Year: 2012

- Author: American Society of Civil Engineers
- Language: English
- Year: 2013

- Author: Water Environment Federation
- Language: English
- Year: 2008