Awdur
- American Water Works Association
- AWWA Distribution System Symposium Phoenix, Ariz 1 canlyniadau
- AWWA Research Foundation 1 canlyniadau
- AWWA Water Security Congress Cincinnati, Ohio 1 canlyniadau
- American Public Health Association 1 canlyniadau
- American Water Works Association. Research Symposium 1 canlyniadau
- Water Environment Federation 1 canlyniadau