Organizations
- Air and Waste Management Association
- American Water Resources Association
- American Water Works Association (AWWA)
- American Water Works Association Research Foundation (AwwaRF)
- National Groundwater Association
- National Institutes for Water Resources
- National Rural Water Association
- National Water and Climate Center
- National Water Research Institute (NWRI)
- State Water Resources Research Institutes
- Water and Wastewater Equipment Manufacturers Association Inc.
- Water Environment Federation
- Water Environment & Reuse Foundation
- Water Quality Association
- WateReuse Association
Technical Resources
- American Society for Testing and Materials (ASTM International)
- American National Standards Institute (ANSI)
- Corrosion Resistance Tables
- Engineering Toolbox Materials Properties
- Engineering Units & Coefficient of Heat Transfer
- Engineering Units Conversion Calculator
- Fundamental Physical Constants
- Hazardous Chemical Database
- Integral Calculator
- Math Tools Technical Computing Portal
- Material Safety Data Sheets
- National Association of Corrosion Engineers (NACE)
- National Fire Protection Association (NFPA)
- National Technical Information Service
- NIST Physical Properties Database
- NSSN: Global Standards
- Online Steam Tables
- Overview of Thermodynamics
- Process Water Treatment Technologies Overview
- Thermodynamic Data Handbooks
- Units Conversion
- Wastewater Characteristics and Effluent Quality Parameters
- Wastewater Treatment Technologies Overview
- Water Environment Federation Technical Resourches
Journals/Publications
- Water Conditioning and Purification Magazine
- Water On-line
- Water Technology On-line
- Water and Waste Digest
- Water World