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The City of Portland, Oregon

Portland Water Bureau

From forest to faucet, we deliver the best drinking water in the world.

Customer Service: 503-823-7770

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Cryptosporidium Monitoring Update: Detections from routine monitoring in the Bull Run. 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, Nov. 29, and Wednesday, Dec. 2, one Cryptosporidium oocyst was detected in each of the samples collected on Nov. 29 and 30. Cryptosporidium was not detected in the samples collected on Dec. 1 or 2. Prior to these detections, Cryptosporidium was last detected from the Bull Run Watershed intake on Nov. 18, 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 Line at 503-823-7525.

ABOUT THE PORTLAND WATER BUREAU

The Portland Water Bureau serves water to almost a million people in the Portland area. Portland’s water system includes two great water sources, 53 tanks and reservoirs, and 2,200 miles of pipes. With 600 employees working on everything from water treatment to customer service, the Water Bureau is committed to serving excellent water every minute of every day.

Cryptosporidium Monitoring Update: Detections from routine monitoring in the Bull Run. 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, Nov. 8, and Wednesday, Nov. 11, one Cryptosporidium oocyst was detected in each of the samples collected on Nov. 8, 10 and 11. Cryptosporidium was not detected in the sample collected on Nov. 9. Prior to these detections, Cryptosporidium was last detected from the Bull Run Watershed intake on Nov. 4, 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 Line at 503-823-7525.

ABOUT THE PORTLAND WATER BUREAU

The Portland Water Bureau serves water to almost a million people in the Portland area. Portland’s water system includes two great water sources, 53 tanks and reservoirs, and 2,200 miles of pipes. With 600 employees working on everything from water treatment to customer service, the Water Bureau is committed to serving excellent water every minute of every day.

Traffic Advisory: Water System Maintenance Closes NE 33rd Ave. Between Thompson and Knott Streets Evening of Saturday Nov. 14

PORTLAND, OR --- Portland Water Bureau crews will perform water system maintenance at the intersection of Northeast 33rd Avenue and Northeast Brazee Street from 7 p.m. Saturday, Nov. 14 to 6 a.m. Sunday, Nov. 15. The work requires that Northeast 33rd Avenue be closed to all traffic between Thompson and Knott streets.

Both north and southbound traffic on Northeast 33rd Avenue will be detoured around the construction site on Northeast 32nd Place. Traffic signs will direct travelers around the closure area.

The traveling public is reminded to stay alert and use caution as traffic may suddenly slow or stop. To avoid traffic delays, motorists are encouraged to use alternate routes around the work site.

                                                                                                ###

UPDATE TRAFFIC ADVISORY: 11/10/20 Water Main Repair Complete

The water main break repair on Northwest 23rd Avenue between Thurman and Vaughn streets is complete. The traffic advisory has been lifted and Northwest 23rd is reopened. The Portland Water Bureau will return (weather dependent) for final restoration work on the asphalt. Water service has been restored.

The broken pipe was a cast iron eight-inch main from 1926. Some customers may have experience discolored water. If your water is discolored, wait an hour for the system to settle. Then run water at one tap for two to three minutes to see if it clears. If it does not, wait another hour and try again. When water runs clear, run water throughout the house to flush any sediment that may have been drawn into your pipes. More information can be found at the Water Bureau’s Discolored Water page.

The Water Bureau’s Maintenance & Construction crews are called out to repair water main breaks at all hours of the day and night, an average of 200 times a year.

Be our eyes and ears. If you think you’ve spotted a broken main, call our emergency line 24-hrs. a day at 503-823-4874.

UPDATED: Crews Are Responding to a Main Break on NW 23rd Ave Between Thurman and Vaughn Streets

Portland Water Bureau crews responded to repair a water main break on Northwest 23rd Avenue between Thurman and Vaughn streets last night. Northwest 23rd Avenue will be closed between Thurman and Vaughn through Tuesday afternoon so crews can make the repairs. Motorists, bicyclists, and pedestrians are urged to use caution around the construction areas.

The onramp to I-405 at Vaughn is open. The I-405 Freeway and Highway 30 are no longer impacted.

The pipe is a cast iron eight-inch main from 1926. Four water services are affected. Some customers may experience discolored water. If your water is discolored, wait an hour for the system to settle. Then run water at one tap for two to three minutes to see if it clears. If it does not, wait another hour and try again. When water runs clear, run water throughout the house to flush any sediment that may have been drawn into your pipes. More information can be found at the Water Bureau’s Discolored Water page.

The Water Bureau’s Maintenance & Construction crews are called out to repair water main breaks at all hours of the day and night, an average of 200 times a year.

Be our eyes and ears. If you think you’ve spotted a broken main, call our emergency line 24-hrs. a day at 503-823-4874.

ABOUT THE PORTLAND WATER BUREAU

The Portland Water Bureau serves water to almost a million people in the Portland area. Portland’s water system includes two great water sources, 53 tanks and reservoirs, and 2,200 miles of pipes. With 600 employees working on everything from water treatment to customer service, the Water Bureau is committed to serving excellent water every minute of every day.