So what happens after you flush the toilet and then go to wash your hands? Normal would be for the pump to shut off after the flush and then start automatically when you turn on your faucet (I.e. “demand” water). You should not try to use your pump if you are connected to city water. But once you switch on your pump the only time it should come on is when a faucet is actually turned on (or toilet, ice maker, washing machine valve. etc.)
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