A leaking kitchen side sprayer is typically caused by a worn-out spray head trigger valve, a cracked flexible supply hose, or a failing diverter valve inside the faucet body that fails to shut off completely. To fix it, unscrew the spray head and check the washers; if the hose is damaged, replace the entire sprayer assembly. Callout type="warning" title="Hygiene Warning": Shut off the hot and cold water supply valves under the sink before disconnecting sprayer lines. Verification: Turn the water supply back on and test both the main spout and side sprayer to confirm zero leaks.
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