Salt and Weight gain

So I had nachos  yesterday...I though it was better than chips. Not really, I chose the salty ones. Salt does some bad thing s to you if you overconsume it.

Water Retention

Eating too much salt can cause water retention. Your kidneys are responsible for regulating the amount of salt in your body by allowing more or less salt to leave your body through your urine. If you have a lot of salt in your system, however, your kidneys are not able to keep up, and the salt waits in your bloodstream. Salt attracts water, and this can cause your blood volume to rise. This excess water can cause bloating, temporary weight gain and serious health problems, such as high blood pressure or congestive heart failure.

The best way to get rid of water retention is drink more water, flush the salt out.... OKAY IM ON IT LOL
I weigh currently: 59 kg :( after yesterdays missunderstoodment with the nachos. 
I want to weigh 56 kg.