Government agencies

- USEPA home page
- USEPA page for industry
- USGS home page
- Sources of data for environmental impact analysis
- Environmental Professionals' Homepage (“Rapid information retrieval for consultants and remediation professionals”)
- Thomas: “Legislative information on the Internet”
- Comprehensive access to federal government documents
- Federal Register

Professional associations

- American Institute of Professional Geologists (AIPG)
- American Society for Testing and Materials (ASTM)
- National Ground Water Association (NGWA)
- Association of Ground Water Scientists and Engineers (AGWSE)
- Society of Mining, Metallurgy, and Exploration (SME)
- Water Environment Federation

- Glossary of water-related words