Leaking from washer reserve tank on 2003 BMW 325i

My washer reserve tank was clogged with algae so I removed and cleaned. I reinstalled as remove, now the tank leakes
near the pump or the pump leaks. Any suggestions?

Asked by for the 2003 BMW 325i
The algea blocked water from accessing and once water entered the pump it leaked past the seal.
Leaking washer pumps are very very common, pumps and seals are to be replaced.