Residents of Humboldt are able to once again use the city water after a water plant that was shut down reopened.

Humboldt officials urged residents on last Thursday to conserve water because of a chemical spill in the Neosho River. State health officials gave the all-clear on Sunday afternoon and residents were told they could go back to regular water use.

The chemicals were spilled during a fire at Mid-West Fertilizer in Iola.