**Open hour can be hosted by anyone about anything.** Many are hosted by [organizers](/organizers). The topics of open hour vary from presentations on tools and methods, discussions on environmental issues, to approaches to data-based advocacy. Each call will include time for introductions, discussion, and questions. Open hour may be virtual or face-to-face, and are promoted broadly across the global Public Lab community. **Propose new sessions on the [Talk page](http://pad.publiclab.org/p/openhour).** To learn about other types of events, see [publiclab.org/events](/events)
###Water Contaminants Open Hour ###May 14, 2014, 8PM EST * See the wiki page on this topic: http://publiclab.org/wiki/common-water-contaminants
* **See this document for notes on the call: https://docs.google.com/document/d/1xVM68fYP5eU5L7ho6mQZI2xza8dbbidbaOe3cd0KVqE/edit** ###May 21, 2014 Water Contaminants topic ###May 28, 2014 unscheduled ###June 4, 2014 unscheduled
###Water Contaminants Open Hour ###May 7, 2014, 7PM EST This first call was dedicated to water contaminants. Listen to the audio [here.](http://chirb.it/ECOhdB) **Topics for the call are covered as follows:**
-Introduction and Sorting Topics: 0:00-15:00
-Structure and Purpose of the Wiki: 15:15-20:35
-Oil Contaminants and Heavy Metals: 21:00-30:24
-Detecting Contaminants in Drinking Water: 30:24-40:20
-Fecal Testing in Water: 40:20-48:10
-Glyphosate: 48:10- 25:00
-The Riffle: 52:00-1h7
-Structure of the Talk and Future Talks: 1h7-end
* See the wiki page on this topic: http://publiclab.org/wiki/common-water-contaminants
* **See this document for notes on the call: https://docs.google.com/document/d/1xVM68fYP5eU5L7ho6mQZI2xza8dbbidbaOe3cd0KVqE/edit**