GENERAL INFORMATION: 503-823-7404
MAILING ADDRESS: 1120 SW Fifth Ave, Suite 600, Portland, OR 97204
The Columbia South Shore Well Field Wellhead Protection Area Reference Manual provides guidance to regulated businesses.
Non-regulated businesses and residents can help too by using and disposing of chemicals responsibly.
Specific ways that you can protect groundwater in your community are listed below. Or attend one of our many groundwater special events.