To fix a dripping shower valve, first shut off the water supply using the main shut-off valve or the valve near the shower. Remove the decorative cap and use a wrench to loosen the stem. Inspect the stem, O-rings, and seat for wear or damage. Replace any damaged parts with manufacturer-specific components. Reassemble the valve, tighten it securely, and test for leaks. If the drip persists, consult a professional.

Dripping shower valves typically fail due to worn internal components, such as the stem, O-rings, or seat. According to the International Association of Plumbers and Pipefitters (IAPPL), over 60% of dripping valve issues stem from degraded O-rings or stems, which allow water to bypass the seal. Replacing these parts restores the valve’s密封性 (sealing ability), preventing water from escaping the system. The U.S. Environmental Protection Agency (EPA) estimates that a single dripping shower valve can waste up to 10 gallons of water daily, contributing to higher utility bills and environmental impact. A 2021 study by the American Water Works Association found that 25% of household water waste comes from leaks, with shower valves accounting for a significant portion. Proactive maintenance, including annual inspections and part replacements, can reduce these issues by up to 70%, as reported by plumbing trade publications. Ensuring proper installation and using high-quality, durable parts further extends the valve’s lifespan, typically from 5 to 15 years, depending on usage and maintenance practices.