Who pays for salon overflow

[Kevin Allen]

Ok, so my wife owns a salon in Louisville KY. It is located in a space that she rents in a strip mall type shopping center. Today someone from the water company stopped by and did an inspection. He then told her she was going to have to buy a overflow that was going to cost about 1100 due to the chemicals that flow down the sink. The water bill is in her name. Is it her responsibility to pay this or the landlords? She has been in this location for about 7 years and there was a salon there previously.