The river Seine isn't as clean as officials would've hoped ahead of the Paris Olympics. 

Many have expressed concerns over the state of the waterway which will also play a major role in the opening ceremony, where teams will float downstream in barges. 

Europe correspondent Catherine Field told Mike Hosking that there's twice the maximum volume of e-coli in the water. 

She says nearly $2.4 billion has been spent trying to clean up the river in the past decade. 

LISTEN ABOVE