Having examined both sides of the issue in depth, we conclude that the City of Falls Church had no choice but to sue Fairfax County over the county’s dramatic shift in water service policy last month. It will be up to the courts to decide the winner and loser in this case, but if Falls Church were to lose, then the City, its residents, taxpayers and users of its water system, including many who are located in Fairfax County, would be dealt a severe blow, the loss of many millions in revenues over the coming years, and possibly worse.