Low Water Pressure

Q: Why has my low-flow faucet suddenly lost water pressure?

A: First, make sure that the shut-off valve under the sink is all the way on.

If it is, then you very likely have some foreign material restricting the flow somewhere within your faucet.
The apparatus used to restrict water in the new low-flow faucets like yours also creates several more sections within the faucet to catch grit and sediment than old faucets with just one screw-off screen. Carefully take the whole faucet apart and check each area for sediment. After putting it back together, it will probably work fine.
*Information above provided by servicemagic.com
Tankless Water Heaters Can Generate Savings
The Basics of Sump Pumps
Checklist: Hire a Plumber
Why Does My Faucet Make a Loud Noise?
Is It Time to Replace My Water Heater?
What Can I Do About a Sump Pump Odor?
Six-Must Have Drain Cleaning Tools
Prevent Expensive Damage - Five Ways to Detect Leaks
Tips on Cleaning Out Your Jetted Bathtub
Locating Your Water Shutoff Valve
How to Remove Mineral Deposits in a Flow Control Valve
How to Install a Clean-Out Plug in a Drain
How to Use Plumber Putty on Bathroom Sinks
Unclog Your Toilets - How to Use a Toilet Snake
Learn the Basics of Sewer Line Repair
How to Prepare for Sump Pump Installation
Stop Clogs - How to Prevent Blocked Drains
Sewer Problems - Finding and Fixing Leaks
Garbage Disposal Safety - Five Best Practices
Lean About What makes up Your Garbage Disposal
Fixing a Kitchen Spay Hose
How to Fix a Leaking Shower Faucet
How to Repair Common Toilet Problems - General Toilet Help
How to Fix a Leaky Tap
Three Garbage Disposal Cleaning Tips
Four Ways to Unclog That Stoppoed Up Sink