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Toilet supply line gets damp during refills
What’s the best way to tell whether moisture appearing only while a toilet tank refills is coming from the supply connector or shutoff valve, rather than running down from the tank fitting above?
I’d be curious what to observe first, especially where the dampness shows up earliest. Is there a safe way to trace it without tightening or moving the connection and potentially making things worse? And if it stays dry between flushes, is that generally a reason to monitor briefly, or should any seepage at a pressurized connection be dealt with promptly?
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Dry the visible area, then watch one refill without touching the fittings. A dry tissue held briefly against the tank connection, shutoff, and supply connector can help reveal which spot wets first; water can run down, so trace upward from the earliest damp point. If it’s unclear, repeat rather than tightening or shifting anything. A confirmed drip at a pressurized connection deserves prompt attention; a short observation to locate it is different from leaving it leaking.
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