Why would the flow of water from the faucet be decreasing?
If the faucet has an aerator at the end of the spout, the aerator may be blocked by debris or mineral build-up from the supply line. With the sink or lavatory drain closed, remove the aerator being careful that no gaskets or other small parts dislodge from the aerator. Use a clean strap wrench to remove the aerator since standard wrenches can damage plated surfaces. Inspect the aerator assembly and try to rinse out any accumulated debris. If necessary, replace the aerator and gasket. Vandal-resistant aerators require a special key tool for removal.
