- Melbourne, Australia Project Center - IQP21
- Monteverde, Costa Rica Project Center - IQP10
- Moscow, Russia Project Center - IQP1
- Moscow, Russia/Haifa Israel Project Center - IQP2
- Nantucket, Massachusetts Project Center - IQP1
- Panama City, Panama Project Center - IQP4
- Prague, Czech Republic Project Center - IQP3
- Rabat, Morocco Project Center - IQP4
- Reykjavik, Iceland Project Center - IQP5
- San Jose, Costa Rica Project Center - IQP5
- San Juan, Puerto Rico Project Center - IQP12
- Santa Fe, New Mexico Project Center - IQP4
- Taipei, Taiwan Project Center - IQP4
- Thessaloniki, Greece Project Center - IQP3
- Tirana, Albania Project Center - IQP4
- Venice, Italy Project Center - IQP4
- Washington, DC Project Center - IQP2
- Water Resource Outreach Center (Massachusetts) - IQP3
- Wellington, New Zealand Project Center - IQP2
- White Mountains, New Hampshire Project Center - IQP2