ServiceNomad RV · Knowledge
RV Water Leaking Under the Sink
Finding water under a cabinet is a common RV annoyance. Road vibration often loosens the threaded plastic fittings used in RV plumbing.
Hand-Tighten Fittings
Check the white plastic nut connecting the PEX line to the faucet. These should be hand-tight. Do not use a wrench as you might crack the plastic. A quarter turn is often all it takes to stop a drip.
Cracked Faucet Housing
Standard RV faucets are often lightweight plastic. Over winter, if not properly winterized, water trapped in the faucet body freezes and cracks the casing. The only fix is replacement.
Drain Issues
Sometimes the leak isn't the supply line but the drain trap. Ensure the P-trap nut is tight and the drain flange is properly sealed with plumber's putty.
Can't fix it yourself?
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