Local sanitation officials say they'd have to make $2 billion in upgrades to the wastewater treatment facility in Elk Grove to meet the state's new rules.
"Ratepayers would see a real hit."
Stan Dean with the Sacramento Regional County Sanitation District says ratepayers could see sewer bills jump from $20 a month to $60.
"There's not enough potential for environmental gain to justify the exorbitant cost."
But Michael Boccadoro disagrees. He's with the Coalition for a Sustainable Delta.
"They're putting recreators in the Delta, whether they're water skiers or swimmers, at great risk with their current discharges."
Boccadoro says there's too much ammonia in those discharges into the Sacramento River which ends up in the Delta and hurts crops and wildlife.
The Central Valley Regional Water Quality Control Board will hold a public hearing on the matter in Rancho Cordova Thursday.
The board could then vote on whether to require Sacramento to meet the stricter sewage rules.