The controversial toilet tax is back on the Manx political agenda next week.
The MHK who brought a 6,000 signature petition opposing the new charge to Tynwald, will table a series of detailed questions in the House of Keys on Tuesday.
West Douglas member Chris Thomas will ask Water Authority chairman John Houghton to reveal the estimated cost of collecting the charge.
He'll ask why the £50 per household charge was not put out to public consultation - and the time scale for means-testing it.
Mr Thomas says there's a real possibility some people might refuse to pay the charge when bills arrive - and that's a risk he says Mr Houghton must address:
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