Frankly, this is bollocks.
Women would have equal pay to the bin men if they chose to work on the bins with them. For the council to consider an 'equivalent' job to a bin man to be a dinner lady is comparing apples with pears - they are not the same.
Whilst I have a great concern about the massive amount we pay in council tax, to arbitrarily cut wages in this manner is simply not fair, so despite being right of centre and generally not agreeing with strike action, I have to say I've got a fair amount of sympathy for them. They had to do something to try and stop this, and if strike action is their only recourse, then I'm not surprised they have taken this action.
However, here's the rub (and I don't know the answer) - whilst I think the action being taken by the local authority is wrong, I also believe it would be wrong to simply increase the wages of the women for the simple reason that we pay too much council tax as it is.