Water Environment Federation: Collection Systems Bulletin Board
- This bulletin board is for any topic related to collections systems, and frequently has discussion threads related to pipe rehabilitation, SSOs, CSOs, and other topics of interest to trenchless technology professionals.
- http://www.wef.org/technicaldiscussions/Forum11-1.aspx

Trenchless Technology Email Forum
- A non-commercial, non-profit, free, and unmoderated list for the interactive discussion of all areas related to trenchless technology.
- http://lists.topica.com/lists/trenchless/

Drilshop Bulletin Board (USA)
- The purpose of this bulletin board is for the posting of, exchange of information, news, wanted equipment, and any other points of interest for the drilling industry.
- http://www.drilshop.com/dril2002/

Trenchless Information Center Directional Drilling Posting Board
- Active bulletin board focused upon directional drilling.
- http://www.no-dig.net/forums/trench/index.html

Drillers Place Chat Room
- Live chat board in U.S. and Australia
- http://drilshop.com/chatroom.html

Geo Discussion forum
- Geotechnical discussion forum featuring posts which often pertain to tunnelling and other underground construction issues.
- http://www.geoforum.com/contacts/bb/forum/index.asp?Lang=

ASCE Forums
- Moderated forums with topics of general interest to engineering professionals.
- http://www.asce.org/forum/allgroups.cfm

Steam-List
- Information about a mailing list for people who work with steam. (This list is not used for discussions of railroads.)This list makes a useful resource for contractors in the pipe rehabilitation industry who use steam generator or boiler trucks for proces
- http://www.swopnet.com/engr/mail_lists/steam_list_info.html

Sewer-List
- An Internet mailing list for persons employed in the wastewater-treatment business. (Trenchless rehabilitation is frequently discussed.)
- http://www.swopnet.com/engr/mail_lists/sewer_list_info.html

ASTM Interactive Forums
- ASTM Standards development forums for task groups
- http://astmforums20.micronexx.com/

Boiler Room Steam Forum
- Bulletin board for discussion regarding the use of boilers. This forum is potentially a good resource for trenchless pipeliner contractors who rely upon boiler trucks.
- http://www.boilerroom.com/forum.html