Salem Begins Testing Water Sources for Algae Season

Posted on May 13, 2023

The City of Salem is taking steps to safeguard its drinking water in preparation for potential algal blooms in the North Santiam watershed. Monitoring the reservoir for algal blooms throughout the summer will continue with updates on cyanotoxins throughout the summer and fall months. Last year, cyanotoxins levels were nearly undetectable in the North Santiam River as it entered the Geren Island Water Treatment Facility.

This year, Salem’s new Frank Mauldin Ozone Facility will be operated continuously as another effective tool against cyanotoxins. Ozone is one of the strongest disinfectants used to treat water, even stronger than chlorine, and can remove cyanotoxins or other pollutants that can pose a health risk at increased levels. Ozone produces no taste or odor, and no ozone remains in the water after treatment.

The City is committed to delivering safe, reliable drinking water to its water customers and is continuing the monitoring program that has been in use since 2018. The City coordinates with the Oregon Health Authority, Marion County Environmental Services, and the Oregon Department of Agriculture to provide residents and businesses with the best available information on potential public health issues and steps the community can take to keep their families and pets safe.

For more information, contact the City of Salem at  or 503-588-6311.


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