Feb. 17, 2017
The Portland Water Bureau received results from ongoing monitoring of the Bull Run watershed. While the bureau is no longer serving drinking water from the Bull Run watershed, monitoring for Cryptosporidium has continued. The bureau remains in compliance with the terms of the Cryptosporidium treatment variance issued by the Oregon Health Authority.
On Monday, Feb. 13, anticipating that further Cryptosporidium detections from the Bull Run were possible, the Portland Water Bureau proactively activated the groundwater wells from the Columbia South Shore Well Field.
The most recent results from water that was not served to the public was from two 50-liter (13 gallon) samples that were positive for one Cryptosporidium oocyst each. The positive samples were collected Tuesday, Feb. 14 and Wednesday, Feb. 15. These are the eighth and ninth positive samples out of 32 samples this year.
The bureau is committed to keeping the public informed of the ongoing monitoring for Cryptosporidium from the Bull Run. The public and the media are encouraged to view all sampling results posted to the City’s website at www.portlandoregon.gov/water/cryptoresults. The bureau will continue to notify the Oregon Health Authority of all detections.
The bureau will also coordinate with state and county health officials to determine when to return to the Bull Run as our drinking water source. The bureau will notify the public and the media when it returns to Bull Run water.
Additional information regarding the Portland Water Bureau’s treatment variance and answers to frequently asked questions are available at www.portlandoregon.gov/water/treatmentvariance. Customers with questions regarding water quality can call the Water Line at (503) 823-7525.