The Boise River is clearing up after a water test earlier this week revealed a significant spike in E. coli, a bacterium that can cause serious infections when ingested.
On Monday, a water testing sample revealed that the Boise River at Ann Morrison Park had 325.5 units of E. coli per 100 milliliters. The City of Boise typically issues a warning at around 235 units per 100 milliliters.
As a result, the Idaho Department of Environmental Quality ordered more testing, and on Friday afternoon, those tests revealed a significant drop in E. coli to 95.9 units per 100 milliliters, which is well within the safe range for swimming and water-based activities.
From May to September each year, the City of Boise tests the water quality in the Boise River and its surrounding ponds weekly for the public’s safety as well as regulatory compliance…