Groundwater is vital to the public health, economy, and environment of Oregon. Oregon’s groundwater has many uses, including drinking water and other household uses, irrigation for crops, numerous industrial and commercial uses, and base flow to streams. In Oregon, the Department of Environmental Quality has the primary authority for groundwater quality protection.
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2015 Mid-Rogue Basin Groundwater Report available now
Free Water Well Testing in Mid-Willamette Valley
DEQ is offering free well water testing in Mid-Willamette Valley as part of a groundwater study. This includes parts of Yamhill, Polk, Marion, Clackamas, Linn and Washington counties.
DEQ is testing groundwater in the Mid-Willamette Valley for nitrate, arsenic, bacteria and pesticides as part of the Statewide Groundwater Monitoring Program. DEQ will test 60 to 100 wells and send well owners individualized reports of well water results.
Download the permission slip
This form describes the testing in more detail and includes a release to grant access for the purposes of conducting the sampling.
2011 Rogue Basin Groundwater Investigation Report
DEQ collected groundwater samples in the central portion of the Rogue Basin in 2011. This report provides results and recommendations based on analysis of the data collected and previous studies.
S. Deschutes/N. Klamath Groundwater Protection Project
DEQ is working with the community to protect the groundwater from nitrate contamination from traditional onsite septic wastewater treatment systems in southern Deschutes and northern Klamath counties.