In each of your faucets is a "flow restrictor." It limits the amount of water that can be delivered to the faucet discharge. In most cases it reduces the flow to about 2.5 gallons per minute. That also reduces the flow of hot water to the faucet.
Usually that restrictor is a "washer" or screen threaded into the pipe nipple somewhere in the faucet. Most handy homeowners can remove them themselves. A plumber certainly can or a handyman can.
There is no law against removing them, it's a water conservation thing. But, if you have to let the faucet run for three minutes to get hot water, where's the conservation there.
Once the flow restrictors are removed, your water pressure will increase and the hot water will arrive at the faucet considerably faster. In our master shower, it was nearly 3 minutes with the restrictor and 45 seconds without it.
All faucets now come from the factory with the restrictor installed. It takes 30 seconds to remove them. You will use more energy without the restrictor.
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How to remove a flow restrictor