| 05 - 08 | WEF Residuals and Biosolids | Nashville, TN |
| 06 - 07 | WEF Energy and Water 2013 Conference & Exposition | Nashville, TN |
| 10 | SCGWA Spring Meeting | Columbia, SC |
| 13 - 15 | IE expo 2013 | Shanghai, China |
| 01 - 03 | ECWATECH 2013 International Water Forum | Moscow, Russia |
| 03 - 07 | Endress+Hauser Basic Instrumentation School | Mobile, Alabama |
| 03 - 06 | Endress+Hauser Level School - Advanced | Matthews, North Carolina |
| 04 - 06 | Endress+Hauser Basic Instrumentation School | Greenwood, Indiana |
| 05 - 07 | Aquatech China 2013 | Shanghai, China |
| 05 - 07 | SEL Modern Solutions Power Systems Conference | Chicago, IL |
| 09 - 13 | AWWA ACE13 | Denver, CO |
| 09 - 12 | WEF Collection Systems 2013 | Sacramento, CA |
| 10 - 12 | Endress+Hauser Pressure & Temperature School | Memphis, Tennessee |
| 24 - 28 | Endress+Hauser Basic Instrumentation School | Gonzales, Louisiana |
| 25 - 28 | Endress+Hauser Basic Instrumentation School | La Porte, Texas |
| 12 | Open Space and Guided Wave Radar Level School | Mobile, Alabama |
| 15 - 17 | Endress+Hauser Level School – Introductory | Memphis, Tennessee |
| 17 - 19 | Endress+Hauser Level School - Advanced | Memphis, Tennessee |
| 22 - 24 | Endress+Hauser Flow School - Introductory | Gonzales, Louisiana |
| 24 - 26 | Endress+Hauser Flow School – Advanced | Gonzales, Louisiana |
| 24 - 26 | Endress+Hauser Flow School Coriolis | Gonzales, Louisiana |
| 08 - 09 | 2013 Market Outlook Workshop | San Diego, CA |
| 18 - 22 | StormCon 2013 | Myrtle Beach, SC |
| 25 - 28 | APWA Congress 2013 | Chicago, IL |
| 01 - 06 | World Water Week | Stockholm, Sweden |
| 08 - 11 | Autovation 2013 | New Orleans, LA |
| 15 - 18 | WateReuse Symposium 2013 | Denver, CO |
| 16 | PumpTec 2013 | Atlanta, GA |
| 23 - 26 | Urban Water Sustainability Leadership Conference | Los Angeles, CA |
| 05 - 09 | WEFTEC.13 | Chicago, IL |
| 20 - 25 | IDA World Congress on Desalination and Water Reuse | Tianjin, China |
| 22 - 24 | FILTECH | Wiesbaden, Germany |
| 24 - 26 | IFAT INDIA 2013 | Mumbai |
| 04 - 07 | AWRA Annual Water Resources Conference | Portland, OR |
| 05 - 08 | Aquatech Amsterdam 2013 | Amsterdam, The Netherlands |
| 03 - 06 | NGWA Groundwater Expo & Annual Meeting | Nashville, TN |
| 10 - 13 | 2013 Chem Show | New York, NY |
The Water & Wastes Digest staff invites industry professionals to nominate the water and wastewater projects they deem most remarkable and innovative for recognition in the Annual Reference Guide issue. All projects must have been in the design or construction phase over the last 18 months.