Pressure that drops across the whole house, or on every hot tap, points to a supply problem. The usual suspects are a leak in a pressurized line, a failing pressure regulator, or scale narrowing old galvanized pipe. A meter test and a few valve checks separate a leak from the other two before anyone opens a wall.
Is low pressure always a leak?
No. A failing pressure regulator, scale inside old pipe, a main valve left half closed after work, or crews working on the street main can all drop pressure with no leak at all. The pattern tells the story. One weak fixture is almost never a leak. The whole house going weak at once is a supply problem, and a leak is one of the first suspects.
How the company narrows it down
The company starts with the two-minute meter test. Every fixture off, watch the dial. A dial that moves means water is escaping somewhere. Next comes the main valve and the regulator, then isolation: hot side versus cold side, house versus yard line, and the irrigation valve shut to test the zones. When the meter stops after one isolation step, the leak is in the section just cut off. The detection process then puts acoustic listening on that section to find the exact spot.
One fixture, or the whole house?
One fixture points to that fixture: a clogged aerator, a supply stop not fully open, or a clog in the short run to that tap. Clean the aerator and check the stop first. The whole house points to the supply side: main valve, regulator, or a pressurized line. Hot water only points to the hot side, often the heater or a hot line under the slab. Warm spots on the floor plus weak hot pressure is a classic slab leak pair.
Sudden drop, or slow fade?
A sudden drop means something changed fast: a line broke, a valve got moved, or the district shut a main for work. Ask a neighbor whether their pressure changed too. A slow fade over months means something is narrowing: scale from hard water, or a small leak that keeps growing. Citrus Heights water runs hard, around 11 grains per gallon, and scale closes old galvanized pipe year by year. A slow fade in a pre-1980s home points to scale first.
Citrus Heights pipes and pressure
Most Citrus Heights homes went up around 1977, and about four in ten were built in the 1970s on slab-on-grade foundations. Galvanized pipe went into the pre-1980s homes and narrows with scale. Copper runs under the slabs and cracks where Fiddyment soil shifts. Polybutylene from 1978 to 1995 fails at its joints. A company that asks the age of the home and the pipe material is already diagnosing, because the pipe decides which failure fits the symptom.
What to check before you call
Check the main valve first and make sure it is fully open. Ask a neighbor about their pressure. Note whether it is one fixture or all of them, hot or cold, sudden or slow, and when it started. Call with that list. It saves the first ten minutes of the visit and points the testing at the right section from the start.
Frequently asked questions
My pressure dropped overnight. Is that a leak?
A sudden drop can be a break, a valve that got moved, or work on the street main. Check the main valve, ask a neighbor if their pressure changed, and run the meter test. A meter that moves with all water off points to a leak.
Only the hot water pressure is low. What does that mean?
The problem is on the hot side. Suspects are the water heater, scale in a hot line, or a hot line leaking under the slab. A warm spot on the floor points to the last one.
Can hard water cause low pressure without a leak?
Yes. Citrus Heights water runs hard, around 11 grains per gallon, and scale narrows old galvanized pipe year by year. A slow fade over months in a pre-1980s home points to scale, not a break.
Will the company have to cut into a wall to find it?
No. The meter test, isolation checks, and acoustic listening come first. The company marks the spot before anyone opens anything, so the repair plumber opens one place, not a trench.
Should I call the water district first?
If neighbors lost pressure too, or crews are working on the street, call the district first. If only your house is affected, run the meter test first and call with the result.
Related
- How to Check Your Water Meter for a Leak
- How Leak Detection Works
- Slab Leak Signs and Repair Options
- Water Main Leak Detection
- Underground Water Leak Detection
- Contact
Think you have a leak?
Call AquaTrace Leak Detection to describe what you are seeing in Citrus Heights and get connected with a company that will plan how to find it.
Call (877) 814-1654Last updated: October 27, 2026.