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| Greenscapes Massachusetts | www.greenscapes.org | |
| MassDEP Drinking Water Program | www.mass.gov/eea/agencies/massdep/water/drinking/ | |
| MassDCR Office of Watershed Management | www.mass.gov/eea/agencies/dcr/water-res-protection/watershed-mgmt/ | |
| U.S. EPA Groundwater and Drinking Water, Region 1 (including Massachusetts) | www.epa.gov/aboutepa/epa-region-1-new-england | |
| Clean Water Action, Massachusetts | www.cleanwateraction.org/ma | |
| University of New Hampshire Stormwater Center | www.unh.edu/unhsc | |
| New England Interstate Water Pollution Control Commission | www.neiwpcc.org | |
| New England Water Works Association | www.newwa.org | |
| American Water Works Association | www.awwa.org | |
| The Groundwater Foundation | groundwater.org/ |