To fix a leaking water inlet valve, follow these steps: First, shut off the water supply to the appliance (e.g., water heater or washing machine) and drain excess water. Next, disconnect the inlet pipe from the valve using a wrench or pliers. Remove the valve’s retaining nut or clip and carefully pull out the old valve. Inspect for mineral buildup, corrosion, or misalignment. Clean or replace damaged components, ensuring the new valve matches the water pressure and flow rate. Reassemble the system by securing the new valve, reconnecting the pipe, and restoring water pressure. Test the valve by running water and checking for leaks. If the issue persists, consult a professional.

Leaking inlet valves are common due to mineral deposits, aging components, or installation errors. According to the U.S. Environmental Protection Agency (EPA), non-leaking appliances can save up to 30 gallons of water monthly, highlighting the importance of timely repairs. A 2021 study by the American Water Works Association found that 15% of water leaks in residential systems originate from faulty valves or pipes, often caused by corrosion (8%) or incorrect installation (7%). Regular maintenance, such as descaling valves annually, can reduce failure rates by 40% (Journal of Water Supply Management, 2020). Delaying repairs increases water waste and energy costs, as inefficient valve operation can raise heating or cooling expenses by 5–10%. Proactive replacement of valves with a service life of 10–15 years is recommended to avoid costly breakdowns.