About the Columbia South Shore Well Field http://www.portlandoregon.gov/index.cfm?c=29785 Wed, 21 Sep 2011 08:05:42 PDT Mon, 31 Aug 2020 10:45:41 PDT Seasonal supply augmentation and emergency back-up source. Groundwater Protection Program http://www.portlandoregon.gov/index.cfm?c=29785&a=365005 Wed, 21 Sep 2011 08:05:42 PDT About the Columbia South Shore Well Field ]]> Development & Use of Groundwater http://www.portlandoregon.gov/index.cfm?c=29785&a=344756 Thu, 7 Apr 2011 09:45:15 PDT About the Columbia South Shore Well Field ]]> Groundwater Special Events http://www.portlandoregon.gov/index.cfm?c=29785&a=244728 Tue, 12 May 2009 14:48:05 PDT About the Columbia South Shore Well Field ]]> Ways to Protect Groundwater Brochure http://www.portlandoregon.gov/index.cfm?c=30046&a=32978 Thu, 13 Nov 2003 10:33:12 PDT How You Can Help Protect Groundwater Category: How You Can Help Protect Groundwater]]> For Well & Septic System Owners http://www.portlandoregon.gov/index.cfm?c=30046&a=32527 Wed, 5 Nov 2003 11:31:03 PDT How You Can Help Protect Groundwater In The Yard http://www.portlandoregon.gov/index.cfm?c=30046&a=32526 Wed, 5 Nov 2003 11:29:46 PDT How You Can Help Protect Groundwater In The Garage http://www.portlandoregon.gov/index.cfm?c=30046&a=32525 Wed, 5 Nov 2003 11:28:54 PDT How You Can Help Protect Groundwater In The Home http://www.portlandoregon.gov/index.cfm?c=30046&a=32524 Wed, 5 Nov 2003 11:28:09 PDT How You Can Help Protect Groundwater In Your Community http://www.portlandoregon.gov/index.cfm?c=30046&a=32523 Wed, 5 Nov 2003 11:26:37 PDT How You Can Help Protect Groundwater