Knowing when to call a plumber for repairs involves recognizing signs such as persistent leaks, low water pressure, slow drains, foul odors, unusual sounds from pipes, and visibly damaged fixtures. Additionally, if you encounter sudden spikes in water bills, wet spots on walls or ceilings, or discolored water, it's essential to seek professional assistance promptly. Attempting DIY fixes without proper knowledge or tools can worsen the problem and lead to more extensive damage. By promptly addressing plumbing issues with the help of a qualified plumber, you can prevent further damage, save money on repairs, and ensure the safety and functionality of your plumbing system.