The whole column is one of those must reads, but I'll give you a sampling here:
The recent flood dropped at least 40 billion gallons of water on the metro area in about five hours. Probably no deep tunnel in the world could handle that much volume. Milwaukee’s Deep Tunnel holds only 432 million gallons.
The irony of the complaints by Sykes, Belling, McIlheran and the CRG is that they all claim to be fiscal conservatives. But their constant harping that the sewerage system doesn’t work creates momentum to spend huge amounts of taxes. The only possible solution to reduce overflows was studied by the Milwaukee Metropolitan Sewerage District in 2007, which found it would cost an estimated $6 billion to add enough capacity (about 1.7 billion gallons) to the Deep Tunnel to get closer to a goal of no overflows. And the pain of that taxation (for very scant gain in sewage overflows) would be felt by all 28 municipalities in the metro area served by the MMSD – the same communities Belling and Sykes claim to be standing up for. Except when they aren’t.