Plumber Repair Desk is a library of 54 guides on leaks, drains, water heaters, and the fixtures you use every day. Each one explains what usually goes wrong, which repairs are yours to make, and the point where the job needs a licensed plumber.
Reach for the small stop valve under the sink or behind the toilet and turn it clockwise until it stops.
Find where the water line enters the house, near the meter or through the basement or crawlspace wall, and close it.
Turn the cold-inlet valve on top of the tank to stop it filling while it drains.
Open the lowest faucet in the house to drain the pressure and let the pipes empty out.
With the water off, the flooding stops and you have time to think.
Read the burst pipe guideEvery guide sits in one of 8 topics. Start with whatever is dripping, backing up, or refusing to turn on.
Burst pipes, backups, and floods, and what to do in the first ten minutes.
Hidden leaks, slab leaks, and pressure problems traced back to the source.
From a slow kitchen sink to a blocked main line under the yard.
No hot water, leaks, and the repair-or-replace call for tank and tankless.
Faucets, toilets, showers, and disposals: the parts you use every day.
Keeping groundwater out of the basement before the next storm.
Softeners and conditioners for hard water, sizing, and installed cost.
What a licensed plumber does, and how to hire the right one.
A softener fixes scale, not taste, iron, or chlorine. Start from your water test result and match the actual complaint to the equipment that treats it.
July 29, 2026 · 12 min read
July 26, 2026 · 13 min read
July 23, 2026 · 13 min read
July 3, 2026 · 11 min read
June 28, 2026 · 4 min read
June 25, 2026 · 4 min read
Anything actively causing water damage or a health and safety risk qualifies. A burst or leaking pipe, a sewage backup into the home, an overflowing toilet you cannot stop, no water at all, a flooding water heater, or the smell of gas all warrant an immediate call. A single slow drain or a dripping faucet can usually wait for a scheduled visit. If water is spreading and you cannot stop it at a fixture valve, treat it as an emergency and shut off the main.
Watch for a water bill that climbs with no change in habits, a water meter that keeps moving when every fixture is off, damp or discolored drywall, a musty smell, or the faint sound of running water in a quiet house. A warm spot on a floor slab can signal a hot-water slab leak. If any of these show up, shut off fixtures and check the meter. A plumber can then use acoustic and moisture equipment to pinpoint the source without opening the whole wall.
A single slow drain with the rest of the house working normally is usually a local clog you can often clear yourself. When several fixtures back up at once, a toilet gurgles as the tub drains, or water rises in a lower-level drain, the blockage sits in the main line that serves the whole home. That is a job for a plumber with a motorized auger, hydro jetter, and camera. If sewage is backing up indoors, stop using water and call right away.
Weigh the unit's age against the repair cost. If it is under about eight to ten years old and the problem is a heating element, thermostat, valve, or sediment, repair is usually the cheaper, faster choice. Once a tank passes ten years, leaks from the tank body, or needs a repair approaching half the price of a new unit, replacement makes more sense. A leak from the tank itself, rather than a fitting, means the steel has corroded through and the heater needs replacing.
Swapping a faucet washer or cartridge, replacing a toilet flapper or fill valve, and resetting a jammed disposal are common do-it-yourself jobs with basic tools. Call a licensed plumber when a shower valve sits behind a tiled wall, a disposal leaks from the body, a fixture ties into hardwired electrical, or you cannot shut off the water cleanly. A pro also helps when the same part keeps failing, which often points to water pressure or a worn valve seat that needs proper diagnosis.
