Are bathroom sink faucets that meet the WaterSense specification more expensive than other bathroom sink faucets?
Most bathroom sink faucets on the market today control flow rate with a faucet accessory, thus, adapting new bathroom sink faucets to meet the requirements of the specification can be as simple as switching to a high-efficiency faucet accessory. Most high-efficiency faucet accessories that restrict flow are no more expensive that their conventional counterparts. However, pressure-compensating faucet accessories that are designed to provide and maintain a constant flow rate despite fluctuations in water pressure typically cost a few dollars more.
