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Low Water Pressure in the House: 7 Causes and Fixes

Low water pressure in your house? From clogged aerators to failing main water lines and corroded pipes, here are the causes NH plumbers see most and how to fix them.

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Is it one fixture or the whole house?

One faucet with weak flow is usually a clogged aerator or cartridge. Weak pressure everywhere points to the pressure reducing valve, the main shutoff, the water line or the piping itself.

Corroded galvanized pipes

Homes built before the 1970s often have galvanized steel pipes that rust shut from the inside. Pressure drops slowly over years. The permanent fix is repiping with PEX or copper.

Hidden leaks and failing water lines

A leak in the main line between the street and your house steals pressure and money. Wet spots in the yard or a bill that jumped are the tell-tale signs; leak detection finds it precisely.

Well and hard water issues

On a well, a failing pressure tank or clogged sediment filter drops pressure. Hard water scale narrows pipes over time; a softener and filtration prevent it.

Need a plumber?

MJA Plumbing and Heating handles this problem every day across New Hampshire. Related services:

Local pages: Water Line Repair in Manchester, Nashua, Concord, Dover, Keene, Portsmouth and every other NH town.

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Need a plumber now?

Emergency plumbers on call 24 hours a day across New Hampshire. Upfront pricing, same-day service.

(888) 480-9811
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