To make up for the loss, the San Francisco Public Utilities Commission is scheduled to temporarily raise water and wastewater rates 5% for retail customers starting April 1.

Already, some Bay Area water providers have enacted such drought surcharges. This month, the Alameda County Water District, which serves Fremont, Newark and Union City, began adding 79 cents to the price of every 100 cubic feet of water, or 748 gallons, consumed, meaning an increase of about $6 to the average monthly bill. Other suppliers in the region, including the East Bay Municipal Utility District, may consider similar surcharges in coming months.

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