Low Water Pressure in Your Arlington Home: Is It a Leak or Something Else?

Low water pressure can come from something simple, like a clogged faucet screen, or from something bigger, like a leak in the main water line or under the slab. The pattern helps. If only one fixture is weak, the problem is usually in that fixture. If the whole house is weak and your bill is up, a leak is a strong suspect. Call (817) 285-5426 if the meter test below shows water moving.

What causes low water pressure in a house?

The most common causes are clogged aerators and shower heads, a partly closed main valve, a failing pressure reducing valve, mineral scale in older pipes, a leak in the main line or under the slab, and work or high demand on the city side.

How do I test for a leak?

Turn off every faucet, toilet, appliance and sprinkler. Find your water meter, usually in a box near the street, and watch the small leak indicator. If it spins, water is flowing somewhere. Write down the reading, wait 30 minutes without using water and check again. Any change means a leak.

1. Turn off all water use inside and outside.
2. Open the meter box and find the leak indicator.
3. Watch it for one minute.
4. Write down the reading and wait 30 minutes.
5. If the number changed, call for leak detection.

Then close the main shut-off at the house and check again. If the meter still moves, the leak is likely in the yard line. Our main shut-off valve guide shows where to find it.

Which leaks lower pressure the most?

A break in the buried line between the meter and the house, or a leak in a main line under the slab, lowers pressure the most because every fixture depends on those lines. A hot water slab leak often shows up as weak hot water while cold water stays normal.

• Soggy or extra-green strip of lawn between the street and house
• Warm spots on the floor
• Running water sounds with everything off
• Hot water that runs out faster than before

Read more about an underground water line leak or the signs of a slab leak.

Could my pressure regulator be the problem?

Yes, if the meter test shows no leak but the whole house has weak or uneven pressure. Many homes have a pressure reducing valve near the main shut-off, and they wear out over time. A low-cost gauge on an outdoor faucet shows your pressure. Most homes run between about 40 and 80 psi.

A regulator that fails the other way can push pressure too high, which strains pipes and can cause leaks later. A plumber can test and replace it.

How much does leak detection cost in Arlington?

A basic leak detection visit in Arlington usually costs $150 to $400. Slab leak detection runs about $250 to $600. You get the price before work starts.

General estimates for Arlington, TX in 2026. Your exact price is confirmed before any work begins.