Hundreds of people turned out for a public meeting to hear more about the proposed 'super sewer' that Chiswick residents fear could be built on their doorstep.
Hounslow Council's leader Peter Thompson has assured locals he and fellow councillors will continue to challenge the plans.
At a packed meeting last night, residents heard directly from Thames Water about its proposals for a £2.2billion Thames Tideway Tunnel.
Up to six construction sites within 500m of the river, each the size of four football pitches, would be needed along the length of the tunnel, including somewhere on the Chiswick/Hammersmith border.
Dukes Meadows has been named in the past as one of the possible locations for an entrance to the tunnel, an underground storage reservoir that is expected to ease pressure on the sewage system which discharges waste into the river.
Speaking at the joint public meeting organised by Hounslow and Hammersmith & Fulham councils, Cllr Peter Thompson said: "No-one wants to see sewage getting into the Thames, and we want our river to be as clean as possible.
"However we also want to question whether there are alternatives to these proposals that are environmentally friendly, more cost effective and less disruptive to local residents."
"While Thames Water has made its case for the super sewer, we're not convinced that there aren't alternatives, or that the benefits outweigh the financial health and environmental costs."
He told the meeting that both councils were calling for an independent study to look into every aspect of the scheme and whether there are less costly and less disruptive solutions.
The event was chaired by Cllr Barbara Reid, Hounslow’s executive member for environment and attended by over two hundred people.