On Wednesday, the Great Lakes Water Authority will vote on a nearly 7% water rate increase and a 6% sewer increase. Last year, GLWA proposed an even bigger hike — close to 8% for water — but public testimony at the hearing pushed the board to lower it.

Wednesday’s hearing is another chance for residents to weigh in. What's driving these increases — and why does water keep getting more expensive?

Suzanne Coffey is CEO of the Great Lakes Water Authority or GLWA. She spoke with The Metro's Robyn Vincent.