Pump this!

Tidal, Jay Z’s streaming music service, is being sued by a former employee who claims she was denied a private room to pump breast milk for her newborn — and then fired.

Instead, Tidal’s Desiree Perez, its highest-ranking female executive, told the former employee to use the bathroom, violating her civil rights, the suit, filed by Lisette Paulson in Manhattan federal court, claims.

A week after Paulson complained, she was called out of a meeting by Tidal Chief Financial Officer Joe Burrino — and fired, it is alleged.

Paulson claims she was dismissed because she wanted a private room to pump.

A Tidal rep did not respond for comment.

Tidal launched in March 2015 and is owned by music artists, including Madonna, Usher, Kanye and Rihanna.