Water Organizations
- American Ground Water Trust
- American Water Resources Association
- American Water Works Association
- American Water Research Foundation
- Association of Metropolitan Water Agencies
- Association of State Drinking Water Administrators
- Association of State and Interstate Water Pollution Control Administrators (ASIWPCA)
- Centers for Disease Control and Prevention
- Environmental Protection Agency
- Foundation for Cross-Connection Control and Hydraulic Research
- The Groundwater Foundation
- Groundwater Protection Council
- International Water Association
- National Association of Regulatory Utility Commissioners
- National Association of Water Companies
- National Council for Science and the Environment
- National Drinking Water Clearinghouse
- National Ground Water Association
- National Rural Water Association
- National Watershed Research Network
- Partnership for Safe Water
- Pennsylvania Infrastructure Investment Authority
- Pennsylvania Municipal Authorities Association (PMAA)
- Pennsylvania Public Utility Commission
- Pennsylvania Rural Water Association
- Rural Community Assistance Partnership
- Small Water Systems (Link no longer available)
- Source Water Collaborative
- USGS Water Quality Information
- Water and Wastewater Equipment Manufacturers Association
- Water Environment Federation
- Water Quality Association
- WateReuse Association
- WaterWiser - AWWA
- Water Works Operators of Pennsylvania
Regulations Online
- Federal Register
- Code of Federal Regulations - NPDWR
- Pennsylvania Title-25 Chapter 109
- PA Bills and Resolutions
- The PA Bulletin
Other Water Related Links
- Earth's 911 - Environmental Information for Communities
- TMDL Site
- EPA Tribal Water Quality Standards
- EPA Water Quality Standards Resources
- EPA's Watershed Assessment, Tracking, and Environmental Results (WATERS)
- EPA's National Service Center for Environmental Publications
- Water Technology Industry Organizations