| Worldwide groundwater organisations |
| American Petroleum Institute - Groundwater Protection |
| Environmental Restoration Division |
| EUGRIS Project (The European Groundwater and Contaminated Land Information System) |
| Groundwater.com |
| Ground Water Protection Council |
| Ground Water Remediation Technologies Analysis Centre |
| Ground Water Remediation Technologies Analysis Centre - Technical Documents |
| International Association of Hydrogeologists |
| International Commission on Ground Water |
| NATO / CCMS Pilot Study on Remedial Treatments for Contaminated Land and Groundwater |
| National Ground Water Association (NGWA) |
| Society for General Microbiology |
| US EPA - Ground Water |
