How do you know if your water is leaking slowly?

How do you know if your water is leaking slowly involves looking for subtle signs of hidden leaks that can cause damage and increase water bills over time. Signs include increased water bill without increased usage, which is often first indicator of slow leak. Check water meter by turning off all water in house, then watch meter for 30 minutes, if it moves, you have leak. Look for water stains, discoloration, or bubbling paint on walls, ceilings, or floors, especially under sinks, around toilets, and near water heater. Feel for dampness or soft spots on floors, walls, or cabinets, and smell for musty or moldy odor indicating hidden moisture. Listen for dripping or hissing sounds in walls when water not in use. Check for mold growth in bathroom, basement, or under sinks, as mold needs moisture. Inspect toilet by adding food coloring to tank, if color appears in bowl without flushing, flapper leaks. Look for pooling water around appliances like dishwasher, washing machine, and refrigerator. Check outside for soggy spots in yard or foundation cracks when not raining. For slab leaks, feel for warm spots on floor or hear water running. Early detection prevents costly remediation, so if you suspect slow leak, call plumber for leak detection with moisture meter and infrared camera, and monitor water usage.