Plumbing disasters can strike any home, at any time. But the truth is, most of them are preventable. After years of responding to emergency calls throughout Riverside County, Davis Plumbing and Heating Inc. has identified the seven most common plumbing catastrophes — and exactly how to prevent each one.

1. Water Heater Flooding (Most Expensive Disaster)

What happens: A corroded water heater tank fails internally, releasing 40-80 gallons of hot water into your garage, utility room, or wherever the heater sits.

Prevention: Replace water heaters proactively at 10-12 years. Annual inspection of the tank body, connections, and T&P valve catches developing problems. Install a water heater leak detector with automatic shutoff valve for added protection.

2. Burst Pipe During Cold Snap

What happens: Exposed pipes in garages, attics, or exterior walls freeze and burst, releasing hundreds of gallons before anyone notices.

Prevention: Insulate exposed pipes before winter. Let faucets drip on nights below 28°F. Keep heating running (at least 55°F) even when away. Know your main shutoff location.

3. Slab Leak Foundation Damage

What happens: An undetected slab leak slowly saturates the soil beneath the foundation, causing settlement, cracking, and structural damage that costs far more than the pipe repair itself.

Prevention: Know the warning signs (high water bill, warm spots on floor, running water sounds). For homes over 20 years old with copper plumbing, annual pressure testing is a smart investment.

4. Sewage Backup Throughout the Home

What happens: A completely blocked main sewer line causes raw sewage to back up into tubs, showers, and floor drains — a health hazard requiring professional remediation.

Prevention: Never flush wipes, paper towels, or foreign objects. Have main sewer lines camera-inspected and cleaned every 3-5 years, especially in homes with mature trees nearby.

5. Washing Machine Supply Hose Blowout

What happens: Old rubber washing machine supply hoses fail under pressure — often when the home is empty — releasing hundreds of gallons into the laundry room and adjacent rooms.

Prevention: Replace rubber supply hoses with braided stainless steel hoses every 5-7 years. Install an automatic washing machine shutoff system. Turn off supply valves when away on vacation.

6. Refrigerator Ice Maker Line Failure

What happens: The small plastic tubing or push-fit connector to a refrigerator ice maker fails, causing a slow leak behind the refrigerator that goes unnoticed for months, damaging flooring and subfloor.

Prevention: Use braided stainless steel supply lines for ice makers. Pull the refrigerator out annually to check for any moisture behind it.

7. Main Shutoff Valve Failure During an Emergency

What happens: When a pipe bursts, a homeowner rushes to turn off the main shutoff — only to find the valve is frozen open from years of non-use and can’t be turned. The pipe continues flowing until the utility comes to shut off the meter.

Prevention: Exercise your main shutoff valve annually — turn it off and back on to keep it operational. If it sticks or won’t fully close, have it replaced. Davis Plumbing replaces failing main shutoffs throughout Riverside County.

Call Davis Plumbing for Preventive Plumbing Service

Call (951) 657-0393 for annual plumbing inspections and maintenance throughout Riverside County. Or contact us online.