UPDATE (4:00 p.m. – 8/29/25):The City of Boise has updated the latest water-testing results from samples taken on Monday, August 25. As we reported, the Dept. of Environmental Quality requested they do more testing on Thursday, August 28.
Officials say a reading above 235 units per 100 milliliters can pose a health risk to swimmers. The screenshot below shows the latest update, Friday afternoon.
The Boise River’s most recent result was 95.9 units per 100 milliliters, well below that threshold.
ORIGINAL STORY:The Idaho Department of Environmental Quality has requested additional water quality testing at the Boise River’s popular floating takeout spot at Ann Morrison Park after concerning E. coli levels were detected…