Amid a historic drought in California, water conservation rebates were increased by the Los Angeles Department of Water and Power Thursday, offering residential customers $500 rebates for high-efficiency clothes-washer purchases and $250 for water-efficient toilet purchases.

The rebates were previously $400 for high-efficiency washers, which use up to 55% less water than standard ones. According to the DWP, the more efficient appliances can reduce water use by more than 11,000 gallons per year.

DWP’s rebates for water-efficient toilets were previously $150. Rebate eligible toilets use more than 30% less water than standard models.