The Neosho River received a clean bill of health from the Kansas Department of Health and Environment on Wednesday.
Ashley Jones-Wisner, a public information officer for KDHE, said the group monitored the river through Monday and found no further contamination from the run-off of a fire of an Iola fertilizer facility on New Years Day.
Soil test results are expected this afternoon for the area affected by the run-off of fire-fighting efforts.