On Monday, Southern Water was hit with a record £126m punishment for spills of wastewater into the environment from its sewage plants and for deliberately misreporting its performance.
The penalty will see customers get a rebate of at least £61 each, but this translates to about £1 off bills a month over the next five years.
Mary Creagh MP, chair of the parliamentary Environmental Audit
Committee, doesn't think this is enough.
"My question really for the regulator is: where is the environmental fine?," she told BBC Radio 4's Today programme.
"We know that this company was systematically flooding the beaches and rivers of the southern portion of our country with raw sewage over a seven-year period, but there's no fine for the environment.
"What are they doing to make good the fish that they have killed and the environmental destruction they have caused?"