Portland Water Bureau
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News Releases
Cryptosporidium Monitoring Update Detections from routine monitoring in the Bull Run. - 02/14/20

Customers do not need to take any additional precautions at this time.

Since 2017, the Portland Water Bureau has detected low levels of Cryptosporidium from routine monitoring. Monitoring results were received from the Bull Run Watershed intake for Cryptosporidium, a potentially disease-causing microorganism. In the 50-liters sampled daily, between Sunday, Feb. 9 and Wednesday, Feb. 12, two Cryptosporidium oocysts were detected in each of the samples collected on Feb. 11 and 12. Cryptosporidium was not detected in the samples collected on Feb. 9 or Feb 10. Prior to these detections, Cryptosporidium was last detected from the Bull Run Watershed intake on Feb. 5, 2020.

The Bull Run watershed is Portland’s primary source of drinking water. The Portland Water Bureau does not currently treat for Cryptosporidium, but is required to do so under drinking water regulations. Portland is working to install filtration by September 2027 under a compliance schedule with Oregon Health Authority. In the meantime, Portland Water Bureau is implementing interim measures such as watershed protection and additional monitoring to protect public health. Consultation with public health officials has concluded that at this time, customers do not need to take any additional precautions.

Exposure to Cryptosporidium can cause cryptosporidiosis, a serious illness. Symptoms can include diarrhea, vomiting, fever and stomach pain. People with healthy immune systems recover without medical treatment. According to the Centers for Disease Control and Prevention (CDC), people with severely weakened immune systems are at risk for more serious disease. Symptoms may be more severe and could lead to serious or life-threatening illness. Examples of people with weakened immune systems include those with AIDS; those with inherited diseases that affect the immune system; and cancer and transplant patients who are taking certain immunosuppressive drugs.

The Environmental Protection Agency (EPA) has estimated that a small percentage of the population could experience gastro-intestinal illness from Cryptosporidium and advises that customers who are immunocompromised and receive their drinking water from the Bull Run Watershed consult with their healthcare professional about the safety of drinking the tap water. The Portland Water Bureau and Burlington, City of Gresham, City of Sandy, City of Tualatin, Green Valley, GNR, Hideaway Hills, Lake Grove, Lorna Domestic Water, Lusted, Palatine Hill, Pleasant Home, Raleigh, Rockwood, Skyview Acres, Tualatin Valley, Two Rivers, Valley View and West Slope Water Districts receive all or part of their drinking water supply from the Bull Run. To learn if your drinking water comes from Bull Run, please contact your local drinking water provider.

The public and the media are encouraged to view all sampling results posted to the City’s website at portlandoregon.gov/water/cryptoresults. The bureau will notify the media and public immediately should further test results indicate a risk to public health and precautions are necessary.

Customers with questions regarding water quality can call the Water Quality Line at 503-823-7525.

Cryptosporidium Monitoring Update: Detections from routine monitoring in the Bull Run. Coordination with health officials continues. - 02/07/20

Since 2017, the Portland Water Bureau has detected low levels of Cryptosporidium from routine monitoring. Monitoring results were received from the Bull Run Watershed intake for Cryptosporidium, a potentially disease-causing microorganism. In the 50-liters sampled daily, between Sunday, Feb. 2 and Wednesday, Feb. 5, two Cryptosporidium oocysts were detected in the sample collected on Feb. 2 and one oocyst was detected in each of the samples collected on Feb. 4 and 5. Cryptosporidium was not detected in the sample collected on Feb. 3. Prior to these detections, Cryptosporidium was last detected from the Bull Run Watershed intake on Jan. 29, 2020.

The Bull Run watershed is Portland’s primary source of drinking water. The Portland Water Bureau does not currently treat for Cryptosporidium, but is required to do so under drinking water regulations. Portland is working to install filtration by September 2027 under a compliance schedule with Oregon Health Authority. In the meantime, Portland Water Bureau is implementing interim measures such as watershed protection and additional monitoring to protect public health. Consultation with public health officials has concluded that at this time, customers do not need to take any additional precautions.

Exposure to Cryptosporidium can cause cryptosporidiosis, a serious illness. Symptoms can include diarrhea, vomiting, fever and stomach pain. People with healthy immune systems recover without medical treatment. According to the Centers for Disease Control and Prevention (CDC), people with severely weakened immune systems are at risk for more serious disease. Symptoms may be more severe and could lead to serious or life-threatening illness. Examples of people with weakened immune systems include those with AIDS; those with inherited diseases that affect the immune system; and cancer and transplant patients who are taking certain immunosuppressive drugs.

The Environmental Protection Agency (EPA) has estimated that a small percentage of the population could experience gastro-intestinal illness from Cryptosporidium and advises that customers who are immunocompromised and receive their drinking water from the Bull Run Watershed consult with their healthcare professional about the safety of drinking the tap water. The Portland Water Bureau and Burlington, City of Gresham, City of Sandy, City of Tualatin, Green Valley, GNR, Hideaway Hills, Lake Grove, Lorna Domestic Water, Lusted, Palatine Hill, Pleasant Home, Raleigh, Rockwood, Skyview Acres, Tualatin Valley, Two Rivers, Valley View and West Slope Water Districts receive all or part of their drinking water supply from the Bull Run. To learn if your drinking water comes from Bull Run, please contact your local drinking water provider.

The public and the media are encouraged to view all sampling results posted to the City’s website at portlandoregon.gov/water/cryptoresults. The bureau will notify the media and public immediately should further test results indicate a risk to public health and precautions are necessary.

Customers with questions regarding water quality can call the Water Quality Line at 503-823-7525.

Attached Media Files: Crypto_Press_Release_020720.docx
Cryptosporidium Monitoring Update: Detections from routine monitoring in the Bull Run. Coordination with health officials continues. - 01/31/20

Since 2017, the Portland Water Bureau has detected low levels of Cryptosporidium from routine monitoring. Monitoring results were received from the Bull Run Watershed intake for Cryptosporidium, a potentially disease-causing microorganism. In the 50-liters sampled daily, between Sunday, Jan. 26 and Wednesday, Jan. 29, one Cryptosporidium oocyst was detected in each of the samples collected on Jan. 28 and Jan. 29. Cryptosporidium was not detected in the samples collected on Jan. 26 or Jan. 27. Prior to these detections, Cryptosporidium was last detected from the Bull Run Watershed intake on Jan. 22, 2020.

The Bull Run watershed is Portland’s primary source of drinking water. The Portland Water Bureau does not currently treat for Cryptosporidium, but is required to do so under drinking water regulations. Portland is working to install filtration by September 2027 under a compliance schedule with Oregon Health Authority. In the meantime, Portland Water Bureau is implementing interim measures such as watershed protection and additional monitoring to protect public health. Consultation with public health officials has concluded that at this time, customers do not need to take any additional precautions.

Exposure to Cryptosporidium can cause cryptosporidiosis, a serious illness. Symptoms can include diarrhea, vomiting, fever and stomach pain. People with healthy immune systems recover without medical treatment. According to the Centers for Disease Control and Prevention (CDC), people with severely weakened immune systems are at risk for more serious disease. Symptoms may be more severe and could lead to serious or life-threatening illness. Examples of people with weakened immune systems include those with AIDS; those with inherited diseases that affect the immune system; and cancer and transplant patients who are taking certain immunosuppressive drugs.

The Environmental Protection Agency (EPA) has estimated that a small percentage of the population could experience gastro-intestinal illness from Cryptosporidium and advises that customers who are immunocompromised and receive their drinking water from the Bull Run Watershed consult with their healthcare professional about the safety of drinking the tap water. The Portland Water Bureau and Burlington, City of Gresham, City of Sandy, City of Tualatin, Green Valley, GNR, Hideaway Hills, Lake Grove, Lorna Domestic Water, Lusted, Palatine Hill, Pleasant Home, Raleigh, Rockwood, Skyview Acres, Tualatin Valley, Two Rivers, Valley View and West Slope Water Districts receive all or part of their drinking water supply from the Bull Run. To learn if your drinking water comes from Bull Run, please contact your local drinking water provider.

The public and the media are encouraged to view all sampling results posted to the City’s website at portlandoregon.gov/water/cryptoresults. The bureau will notify the media and public immediately should further test results indicate a risk to public health and precautions are necessary.

Customers with questions regarding water quality can call the Water Quality Line at 503-823-7525.

Attached Media Files: Crypto_Press_Release_013120.docx
Cryptosporidium Monitoring Update: Detections from routine monitoring in the Bull Run. Coordination with health officials continues. - 01/24/20

Since 2017, the Portland Water Bureau has detected low levels of Cryptosporidium from routine monitoring. Monitoring results were received from the Bull Run Watershed intake for Cryptosporidium, a potentially disease-causing microorganism. <>In the 50-liters sampled daily, between Sunday, Jan. 19 and Wednesday, Jan. 22, one Cryptosporidium oocyst was detected in the sample collected on Jan. 19, three oocysts in sample collected on Jan. 20 and one oocyst in the sample collected on Jan. 22. Cryptosporidium was not detected in the sample collected on Jan. 21. Prior to these detections, Cryptosporidium was last detected from the Bull Run Watershed intake on Jan. 12, 2020.

The Bull Run watershed is Portland’s primary source of drinking water. The Portland Water Bureau does not currently treat for Cryptosporidium, but is required to do so under drinking water regulations. Portland is working to install filtration by September 2027 under a compliance schedule with Oregon Health Authority. In the meantime, Portland Water Bureau is implementing interim measures such as watershed protection and additional monitoring to protect public health. Consultation with public health officials has concluded that at this time, customers do not need to take any additional precautions.

Exposure to Cryptosporidium can cause cryptosporidiosis, a serious illness. Symptoms can include diarrhea, vomiting, fever and stomach pain. People with healthy immune systems recover without medical treatment. According to the Centers for Disease Control and Prevention (CDC), people with severely weakened immune systems are at risk for more serious disease. Symptoms may be more severe and could lead to serious or life-threatening illness. Examples of people with weakened immune systems include those with AIDS; those with inherited diseases that affect the immune system; and cancer and transplant patients who are taking certain immunosuppressive drugs.

The Environmental Protection Agency (EPA) has estimated that a small percentage of the population could experience gastro-intestinal illness from Cryptosporidium and advises that customers who are immunocompromised and receive their drinking water from the Bull Run Watershed consult with their healthcare professional about the safety of drinking the tap water. The Portland Water Bureau and Burlington, City of Gresham, City of Sandy, City of Tualatin, Green Valley, GNR, Hideaway Hills, Lake Grove, Lorna Domestic Water, Lusted, Palatine Hill, Pleasant Home, Raleigh, Rockwood, Skyview Acres, Tualatin Valley, Two Rivers, Valley View and West Slope Water Districts receive all or part of their drinking water supply from the Bull Run. To learn if your drinking water comes from Bull Run, please contact your local drinking water provider.

The public and the media are encouraged to view all sampling results posted to the City’s website at portlandoregon.gov/water/cryptoresults. The bureau will notify the media and public immediately should further test results indicate a risk to public health and precautions are necessary.

Customers with questions regarding water quality can call the Water Quality Line at 503-823-7525.

Attached Media Files: Crypto_Press_Release_012420.docx
TRAFFIC ADVISORY: RESCHEDULED Portland Water Bureau will close lanes for paving S.W. Naito Parkway on Jan. 24 - 01/22/20

Rescheduled for inclement weather, the Portland Water Bureau will close lanes on S.W. Naito Parkway to pave the roadway on Friday, Jan 24.

This is a continuation of work on the Water Bureau’s Willamette River Crossing Project which began in October 2019 and will continue through the spring of 2020. Current work taking place in S.W. Naito Parkway will allow us to connect the new pipe under the Willamette River to the existing water system. 

  • Beginning Jan. 24, between 9 a.m. and 4 p.m., paving work will temporarily close one lane of S.W. Naito Parkway in each direction. Traffic will continue to flow in the remaining lanes. Travelers should expect delays. Flaggers will direct traffic through the work zone.
  • The pedestrian and bicycle path along the east side of Naito Parkway will remain open. (There is no bike path on the west side in this area.)
  • Paving work is weather dependent and may be delayed due to rain or cold temperatures. The upcoming forecast suggests this is likely.

Later in the spring, construction will temporarily close one lane in each direction to install a new pipe. The Water Bureau will also coordinate with Portland Bureau of Transportation in the coming months as they begin the S.W. Naito Parkway Improvement Project, outlined at portlandoregon.gov/transportation/swnaito.

About the Willamette River Crossing project

Portland’s water mains (pipes) that cross the Willamette River are more than 50 years old and will probably not survive a major earthquake. As part of the Portland Water Bureau’s commitment to preparedness, we are installing an earthquake-resilient water pipe deep under the Willamette River. This new water pipe will help ensure that we can deliver safe and abundant water to the west side, even after an earthquake.

This project is currently in the design and exploration phase. This phase includes locating underground utilities and conducting a geotechnical probe, which will provide important information about soil deep underground and help us confirm the best path across the river. More information: portlandoregon.gov/water/wrx.