Jessica Floum | The Oregonian/OregonLive By Jessica Floum | The Oregonian/OregonLive
on March 14, 2017 at 12:23 PM
Portland water customers will once again drink and bathe in the city’s famed Bull Run water starting Wednesday after detections of parasites have gone down.
The Portland Water Bureau said Tuesday it will switch back to delivering customers water from the near-pristine Bull Run Watershed on Wednesday after serving only groundwater for about a month.
The office switched to serving 100 percent groundwater from the Columbia South Shore Well Field following about nine tests from early January to early March that found cryptosporidium in Bull Run water.
The rarity of cryptosporidium findings in the last month offers the city reprieve from the specter that it would have to build an $89 million treatment plant.
Bureau officials wrote in a statement that they expect to continue to find isolated instances of cryptosporidium, but that the public health risk remains low.
“While it is likely that low-level detections of cryptosporidium from the Bull Run will continue, current evidence from public health data, monitoring results, and watershed investigations, as well as extensive consultation with public health officials, have provided confidence in the Portland Water Bureau’s decision to resume delivering Bull Run water,” the statement said.