1. [Home](/) 2. [Guides](/guides/) 3. Leaks, frozen pipes and water pressure in Dayton-area homes # Leaks, frozen pipes and water pressure in Dayton-area homes Most water damage in a house starts small: a drip behind a wall, a pipe in a cold corner, a valve nobody has turned in years. Here is how to catch problems early and know when to call a plumber. ## Key takeaways - Know where your main shutoff is and make sure it turns before you need it. - A water meter test is the quickest way to confirm a hidden leak. - Pipes in exterior walls, crawl spaces and garages are the first to freeze. - Most homes do best with water pressure between about 40 and 80 psi. - Hard water leaves scale that shortens the life of fixtures and water heaters. ## Find your main shutoff before you need it When a pipe bursts or a supply line lets go, what matters most is how fast you can stop the water. Every house has a main shutoff valve, and every adult in the house should know where it is. In most Dayton-area homes with a basement, the main shutoff is on the wall where the water line comes in from the street, usually near the water meter. In slab homes it may be in a utility closet, near the water heater or in the garage. Some properties have the meter in a pit near the curb. That valve belongs to the water utility and is not one to operate yourself. There are two common types: - **Ball valves** have a lever handle. A quarter turn closes them. When the lever sits crosswise to the pipe, the water is off. - **Gate valves** have a round wheel handle and take several turns. They are common in older homes and can seize or break if they have not been moved in years. Test your valve once a year. If a gate valve will not turn with firm hand pressure, do not force it with a wrench. A plumber can replace it with a ball valve so it works when you need it. Learn the small shutoffs under each sink and behind each toilet too, so one leaking fixture does not mean shutting off the whole house. ## Water bill clues that point to a leak Your water bill is often the first sign of a leak you cannot see. Compare the same month across a couple of years rather than month to month, since lawn watering and houseguests change things. If usage climbs and nothing about how you live has changed, something is likely running. The meter test confirms it. Turn off every faucet, appliance and irrigation line, then look at the meter. Many meters have a small leak indicator, often a triangle or star, that spins when any water moves. If it turns while everything is off, water is going somewhere. You can also write down the reading, avoid using water for an hour or two, and check again. A running toilet is the most common culprit and one of the easiest to fix. The full walkthrough, including the toilet dye test, is in the guide to [finding hidden leaks](/guides/leaks-and-pipes-guide/finding-hidden-leaks/). ## Where hidden leaks show up Water travels before it shows itself, so a stain is not always directly under the leak. Common signs: - Brown rings or soft spots on ceilings under bathrooms - Bubbling paint or damp drywall near a tub, shower or toilet - Warped flooring or loose tiles around a toilet base - A musty smell in a closet or vanity that will not go away - The sound of running water when nothing is on - A water heater sitting in a puddle, or rust at the base of the tank In older Dayton-area homes, galvanized steel supply pipes are worth watching. They corrode from the inside, and pinhole leaks often appear at threaded joints. A basement makes leaks easier to catch: walk the exposed pipes a few times a year with a flashlight and look for green or white crust on fittings, drips at valves and rust on the water heater. Any leak inside a wall, under a slab or at the water heater is a job for a plumber. Small drips can keep wood and drywall wet for months and lead to mold. [Leak repair](/services/leak-repair/) is usually a smaller job the earlier the leak is found. ## Frozen pipes in an Ohio winter Southwest Ohio winters swing between mild days and hard cold snaps, and that freeze-thaw cycle is hard on plumbing. A pipe often does not burst where the ice forms. Pressure builds between the ice and a closed faucet, and the pipe splits there, sometimes in a spot you cannot see until it thaws and starts spraying. The pipes most at risk run through exterior walls, crawl spaces, unheated garages, attics and the cabinets under sinks on outside walls. Outdoor hose bibs are a frequent failure point, especially when a hose is left attached. The basics: - Disconnect garden hoses in the fall, and shut off and drain any outdoor faucet that has an inside shutoff. - Insulate exposed pipes in unheated spaces with foam sleeves. - On the coldest nights, open cabinet doors on outside walls and let vulnerable faucets drip. - Keep the heat on when you travel. More detail, including how to safely thaw a frozen pipe, is in the guide to [preventing frozen pipes](/guides/leaks-and-pipes-guide/prevent-frozen-pipes/). ## Low or high water pressure **Low pressure at one fixture** is usually local: a clogged aerator, a worn cartridge or a partly closed shutoff under the sink. Unscrew the aerator at the tip of the faucet and rinse out the grit and scale. That fixes it more often than people expect. **Low pressure throughout the house** points to something bigger. In older homes, galvanized pipes narrow as rust and scale build up inside, and the problem gets slowly worse over the years. A partly closed main valve, a failing pressure-reducing valve or a hidden leak can also cause it. If pressure drops suddenly, check with neighbors first. A water main break or utility work may be the reason. **High pressure** is easy to miss because the showers feel great. It is hard on supply lines, toilet fill valves, water heaters and appliance hoses. A pressure gauge that threads onto a hose bib will tell you where you stand. Most homes do well somewhere around 40 to 80 psi. Pressure that regularly reads above 80 is a reason to have a plumber check or install a pressure-reducing valve. Banging pipes when a valve closes, called water hammer, often comes with high pressure and is worth having looked at. ## Hard water and your fixtures Much of Ohio has hard water, and the Miami Valley is no exception. Hard water carries dissolved calcium and magnesium that leave scale behind when the water heats up or evaporates. You see it as white crust on faucets and shower heads, spotty glassware and soap that does not lather well. You do not see it inside the water heater, where scale settles at the bottom of the tank, makes the heater work harder and can cause popping or rumbling. Scale also clogs aerators and wears out faucet cartridges and toilet valves faster. Flushing the water heater on schedule and cleaning aerators helps. For a whole-house fix, a water softener is the usual answer. The guide to [what hard water does to your plumbing](/guides/leaks-and-pipes-guide/hard-water-effects/) covers the signs and how softeners work. ## When to call a plumber Cleaning an aerator, replacing a toilet flapper and insulating exposed pipe are fine to do yourself. Call a plumber when: - Water is coming from a wall, ceiling or floor and you cannot see the source - A pipe has frozen and you cannot find or reach the frozen section, or it has split - The main shutoff will not turn, or leaks when you turn it - Pressure is low throughout the house or reads above 80 psi - The water heater is leaking, rumbling loudly or producing rusty water If water is actively leaking, shut off the main first, then call. ## Frequently asked questions How do I know if I have a leak if I cannot see any water? Turn off all water in the house and watch the leak indicator on your water meter. If it moves, water is going somewhere. A toilet dye test is a good next step, since running toilets are the most common hidden leak. Should I let faucets drip during a cold snap? On the coldest nights, a slow drip from a faucet on an outside wall keeps water moving and relieves pressure in the line. It matters most for pipes you know are prone to freezing. Why is my water pressure lower than it used to be? In older homes, galvanized pipes slowly narrow with rust and scale. A clogged aerator, a failing pressure-reducing valve or a partly closed valve can also lower pressure. If it is low at every fixture, have a plumber take a look. 6 min read. ### Want us to handle it? McLean Plumbing works in Xenia, Beavercreek, Kettering, Dayton. [Get a quote](/contact/)[Call (937) 604-0206](tel:+19376040206) ### In this guide - [Preventing frozen pipes in an Ohio winter](/guides/leaks-and-pipes-guide/prevent-frozen-pipes/) - [How to find a hidden water leak](/guides/leaks-and-pipes-guide/finding-hidden-leaks/) - [What hard water does to your plumbing](/guides/leaks-and-pipes-guide/hard-water-effects/) ### Related services - [Pipe Repair](/services/leak-repair/) - [Bathroom and Kitchen Plumbing Fixtures](/services/fixtures/) - [Water Softeners](/services/water-treatment/) ### Service areas - [Xenia](/areas/xenia/) - [Beavercreek](/areas/beavercreek/) - [Kettering](/areas/kettering/) - [Dayton](/areas/dayton/) ### Other guides - [Water heaters in Dayton area homes](/guides/water-heater-guide/) - [Drains, sewer lines and basement backups](/guides/drains-and-sewer-guide/) ## Call (937) 604-0206 or send a quote request. Quotes are free. [Get a quote](/contact/) [Call (937) 604-0206](tel:+19376040206) --- **McLean Plumbing** · 154 Richland Rd, Xenia, OH 45385 · (937) 604-0206 · abolka@mcleanplumbingllc.com [Get a quote](/contact/) · [Services](/services/) · [Guides](/guides/) · [FAQ](/faq/)