Putting laundry det. into sump pump

[Marci Stein]

So my tenants  told me they have been emptying the washing machine into the sump pump past 6 months (As opposed to in the shower. )
several circuit breakers stopped working and the electrician just told me 

It’s because  because the sump pump circuit breaker shorted. 

i’m sure it’s due to the soap they have been pumping down there but can’t prove it. 
who pays the $400 Electrician bill?

Thanks very much!