When water pressure suddenly seems lower, one of the most useful first questions is whether the change affects a single faucet or the entire house. Grant explains how that distinction helps narrow the list of possible causes.
If only one faucet is affected
Grant points to the local hot- and cold-water supply valves as possible sources of reduced flow. A valve may have been adjusted or may have developed a problem over time. That can affect one sink without changing the rest of the home.
He also recommends considering the faucet aerator. Debris can collect there and restrict the water coming out. In the video, he describes removing the aerator, checking for debris, and cleaning it as a step that can noticeably improve flow at that particular faucet.
If the problem affects the whole house
A broader change calls for looking farther upstream. Grant discusses a possible restriction in the main water line, a valve issue, or a problem involving a pressure-regulating valve.
He notes that work on the water supply in the street can sometimes introduce debris that later catches in the plumbing. That is a possibility to investigate, rather than proof that utility work caused your problem.
Use the pattern to guide the next step
Check which fixtures are affected and note whether the change was sudden. That information helps separate a local faucet problem from a supply issue that affects the whole home.
Grant says homeowners may be able to identify a straightforward cause, but recommends bringing in a plumber when the answer remains unclear. Contact Darnold & Lyons if the problem persists or the cause is not apparent.
