King County eyes back-to-back sewage rate hikes

King County is proposing a 12.75% sewage rate hike—about $8 monthly per household—to fund $14 billion in infrastructure upgrades over the next decade. The work addresses aging pipes that overflow during heavy rains, mixing sewage with stormwater into local waterways. A second double-digit rate increase is also planned. Burien residents on King County’s system would be affected if the hike is approved.