| gc.ca | Canadian Pollution Prevention Information Clearinghouse |
| state.or.us | Oregon Commercial Waste Reduction Clearinghouse |
| ca.gov | Local Government Central |
| p2pays.org | North Carolina Division of Pollution Prevention and Environmental Assistance |
| gov.ns.ca | Nova Scotia Pollution Prevention |
| environmental-center.com | Indicators of Pollution Management |
| defra.gov.uk | UK DEFRA Pollution Prevention and Control |
| cleanup.org | Earth 911 |
| angelfire.com | The Search for Safer and Greener Chemical Solvents in Surface Cleaning |
| p2ric.org | Pollution Prevention Regional Information Center |
United States , Arizona , Phoenix