I turned my kitchen sink on and off several times. Its a fairly noisy sink. You can hear the faucet squeaking and a high pitched hum that comes from the pipes. Once the faucet is turned off, you can hear the water running down the drain.
Zoom h4 held immediately at the opening of a thermos. Hot tea building up air pressure, escaping air evenly producing this squeaky sound. Low cut 1000hz for filtering out street noise.