The city of Colfax will host a workshop to explain the proposed sewer rate increase starting at 6 p.m. on Tuesday, June 17 at Sierra Vista Community Center, 55 School Street. Staff will be on hand to explain the proposed increase and answer questions. The city mailed a letter on May 15 to residents and busiensses expressing regret for the impending adversity facing Colfax residents. The letter also detailed the necessity for upgrades to the wastewater treatment plant. The upgrades are part of the upgrades at the facility that was first completed in 1978. The new sewer rates will go into effect on July 12 pending council approval. Residents are encouraged to attend the July 1 public hearing scheduled by the Colfax City Council to express their views on the rate increase.