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!

[Ryan B.]

@Marci Stein Do you have any objective source that suggests soap or washer outflow is harmful to a sump pump? If you don’t have that, I’m not sure how you pin this on the washer outflow or the tenant. Now, it would likely be putting additional use and wear on the sump pump, and it is reasonable to ask them to stop. But without any source stating that soap is bad for a sump pump, this feels like wishful thinking wanting to push off the expense.