Homeowners across Sonoma County could soon be paying more for their sewer rates as rising operating costs and decades-old infrastructure continue to strain wastewater systems countywide, officials say. Sonoma Water, the agency that manages many of the county’s wastewater sanitation zones and districts, has proposed increases in all eight of its operational areas spanning from Penngrove to the Russian River and Sea Ranch Sanitation Districts. … Aging infrastructure and an overwhelmed system led to the largest spill of untreated sewage at the Guerneville wastewater treatment plant in January in more than four decades, prompting officials to scramble to identify urgent upgrades to the treatment plant and its collection system.

Other infrastructure news:

• The Press Democrat (Santa Rosa, Calif.): Napa officials break ground on next phase of flood-control project
• Valley Voice (Ivanhoe, Calif.): Cal Water brings sixth water storage tank online in Visalia
• CalMatters (Sacramento, Calif.): Opinion: Yuba River disaster — coming soon to a river near you?