If your water heater is leaking from the bottom, you must take immediate emergency action. First, shut off the cold water supply valve located at the top of the tank to stop incoming water pressure, and turn off the electrical circuit breaker or gas control valve. Place towels and buckets to catch pooling water. If the leak originates directly from rusted bottom tank seams or internal corrosion, the tank has failed catastrophically and cannot be repaired, requiring a complete unit replacement. Verification: Inspect fittings to ensure it is not merely a condensation or T&P valve issue.
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